The initial amount injected was 50 milligrams and after 7 hours, there are approximately 16.08 milligrams of the drug in the patient's bloodstream.
How to calculate initial amount injected and the amount in the bloodstream after 7 hours.The function that models the number of milligrams D(h) in a patient's bloodstream h hours after the drug is injected is:
D(h) = 50e^(-0.2h)
To find the initial amount injected, we can evaluate D(0):
D(0) = 50e^(-0.2*0) = 50e^0 = 50
Therefore, the initial amount injected was 50 milligrams.
To find the amount in the bloodstream after 7 hours, we can evaluate D(7):
D(7) = 50e^(-0.2*7) ≈ 16.08
Therefore, after 7 hours, there are approximately 16.08 milligrams of the drug in the patient's bloodstream.
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if tan 0=11/9, find sec 0
Answer:
[tex]\frac{\sqrt{202} }{9}[/tex] OR ≈ 1.57919
Step-by-step explanation:
tanθ = opp/adj
opp/adj = 11/9
hyp = [tex]\sqrt{202}[/tex]
secθ = 1/cosθ
cosθ = [tex]\frac{9}{\sqrt{202} }[/tex]
1/cosθ = [tex]\frac{1}{\frac{9}{\sqrt{202} } }[/tex]
= [tex]\frac{\sqrt{202} }{9}[/tex] or ≈ 1.57919
discuss in this part. example 8.1 we use the method of steepest descent to find the minimizer of f(xi,x2,xs)
Here, we will use the method of steepest descent to find the minimiser of the function f(x1, x2, x3). The steepest descent method is an iterative optimization algorithm used to find the local minimum of a function.
Step 1: Initialize the starting point (x1, x2, x3) and set the initial values.
Step 2: Compute the gradient of the function f(x1, x2, x3) with respect to each variable (x1, x2, x3). The gradient is a vector that points in the direction of the steepest increase of the function.
Step 3: Calculate the step size, which determines how far along the descent direction we move. This can be done using various techniques, such as line search or a constant step size.
Step 4: Update the current point by moving in the direction of the negative gradient (steepest descent direction) with the computed step size. The new point will be (x1_new, x2_new, x3_new).
Step 5: Check the convergence criteria. If the change in the function value or the variables is below a certain threshold, stop the iteration process. Otherwise, return to Step 2 with the updated point.
By following these steps, the method of steepest descent will help us find the minimizer of the function f(x1, x2, x3).
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I need help with this please
Answer: The second cooper weighed 7 pounds. He weighed more by 5 ounces
Step-by-step explanation:
Answer:
Cooper weighs more and here's why
Step-by-step explanation:
6 pounds and 11 ounces is equal to 6.6875 pounds
112 ounces is equal to 7 pounds.
That's why Cooper weighs more.
0.3125 pounds, or 5 ounces is the weight difference, so approximately 0.31 pounds is how much more Cooper weighs than Cane
The players of a travel volleyball team have no more than a combined total of 385
shirts and hats to sell for a fundraiser to fund a trip. The shirts sell for $12
each, and the hats sell for $25
each. The players must make a combined total of at least $7,450
from the fundraiser. If s
represents the number of shirts sold during the fundraiser, and h
represents the number of hats sold during the fundraiser, which system of inequalities represents the scenario?
system of inequalities represents the scenario: The differences are 12s + 25h 7450 and s + h 385.
When expressions or values do not have an equal relationship to one another, this relationship is referred to in mathematics as an inequality. Inequality is the product of an unbalanced system. The symbol "=" denotes equality between two quantities, and the symbol denotes inequality between them.
The maximum count of hats and shirts sold in this case is 385 if s stands for the quantity of shirts sold during in the fundraiser and h for the amount of hats sold during in the campaign.
=> s +h 385
And the players must make a combined total of at least $7, 450 from the fundraiser, then shirts sell for $12 each, and the hats sell for $25 each then,
=> 12*s+25*h 7450
=> 12s + 25h 7450
Hence the inequalities are, s +h 385 and 12s + 25h 7450.
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a die is thorn four times. what is the probability that each number thrown is at least as high as all of the numbers that were thrown earlier?
Answer:
Step-by-step explanation:
The first roll can be any number from 1 to 6, since there are no earlier rolls to compare it to.
For the second roll, the probability of rolling a number greater than the first roll is 1/2, since there are only three numbers left on the die that are greater than the first roll.
Similarly, the probability of rolling a number greater than the first two rolls on the third roll is 1/3, and the probability of rolling a number greater than the first three rolls on the fourth roll is 1/4.
Therefore, the probability of rolling four numbers that are at least as high as the previous rolls is:
1 x 1/2 x 1/3 x 1/4 = 1/24
So the probability of rolling four numbers that are at least as high as the previous rolls is 1/24.
The probability of rolling each number higher than the previous number when a die is thrown four times is 1/3.
To calculate this probability, we must first understand the concept of a combination. A combination is a way of selecting items from a set, such that the order of selection does not matter. In this case, the set is the numbers 1-6.
The probability of rolling each number higher than the previous number is equal to the probability of selecting four numbers from a set of six without repeating any of them.
We can calculate this probability by dividing the number of desired combinations by the total number of possible combinations.
The number of desired combinations is equal to the number of ways we can choose the first number from the set (6 choices), multiplied by the number of ways we can choose the second number from the remaining five (5 choices), and so on.
Therefore, the number of desired combinations is 6*5*4*3, which is 360.
The total number of possible combinations is equal to the number of ways we can choose four numbers from a set of six, which is 6*5*4*3*2*1, or 720.
Therefore, the probability of rolling each number higher than the previous number when a die is thrown four times is 360/720, which is equal to 1/3.
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If the diameter in the semicircle is 10.5 what is the perimeter
Answer:
Perimeter of semi-circle = 16.5 cm.
Step-by-step explanation:
Given that,
Diameter of the semi-circle, [tex]\text{d} = 10.5 \ \text{cm}[/tex]
So, Radius of the semi-circle, [tex]\text{r} = 10.5\div2 \ \text{cm}[/tex]
We know that,
Perimeter of a Circle [tex]= 2\pi r[/tex]
So, Perimeter of a semi-circle [tex]= \dfrac{1}{2} \times 2\pi r[/tex]
[tex]= \pi r[/tex]
[tex]= \dfrac{22}{7} \times 10.5\div2[/tex]
[tex]= 16.5 \ \text{cm}[/tex]
Hence, Perimeter of the semi-circle with diameter 10.5 cm is 16.5 cm.
Represent the following sentence as an algebraic expression, where "a number" is the letter x. You do not need to simplify.
8 is subtracted from the cube of a number.
Answer: ChatGPT is acting weird
Step-by-step explanation:
The cube of a number x is represented as x^3, and 8 is subtracted from it.
So, the algebraic expression is:
x^3 - 8
which of the following is true about a sample proportion? a. since sample proportion is a mean, one can find the z-value and an acceptance interval. b. it is impossible to find an acceptance interval of a sample proportion. c. it is not possible to standardize a sample proportion, meaning, the z-value cannot be calculated. d. none of the above.
Since sample proportion is a mean, one can find the z-value and an acceptance interval is true statement about sample proportion. (A)
The sample proportion is the ratio of the number of items in the sample having a given attribute (the numerator) to the total number of items in the sample (the denominator).
By taking a sample of data and calculating the sample proportion, one can use the z-score to find the acceptance interval and estimate the true population proportion.
For example, if the sample size is 100, and the number of items with a given attribute is 35, then the sample proportion would be 35/100 = 0.35. Using the z-score, one can then calculate the acceptance interval, which is the range of values in which the true population proportion is likely to fall.
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Triangle ABC will be dilated with a scale factor of 2, centered at the origin. What will be the resulting coordinate of B'?
(look at pic below for graph)
answer options:
A) (4,6)
B) (4,12)
C) (-4,-12)
D) (2,12)
pls answer asap
Triangle ABC will be dilated with a scale factor of 2, centered at the origin. What will be the resulting coordinate of B' will be (4,12).
What is a triangle?A polygon with three sides and three vertices is called a triangle. It is one of the fundamental geometric forms. Triangle ABC is the designation for a triangle with points A, B, and C. In Euclidean mathematics, any three points that are not collinear produce a distinct triangle and a distinct plane.
What are coordinates?A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more integers, or coordinates. The order of the coordinates is important, and they are sometimes identified by their position in an ordered tuple and sometimes by a letter, as in "the x-coordinate". In elementary mathematics, the coordinates are assumed to be real numbers. Analytic geometry is based on the use of a coordinate system, which enables issues with geometry to be converted into problems with numbers and vice versa.
Triangle ABC will be dilated with a scale factor of 2, centered at the origin.
Coordinates of B are (2,6).
When the triangle is dilated, we multiply the coordinates by 2.
hence, B'(4,12)
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Find the value of X in the isosceles trapezoid
In an isosceles trapezoid, the diagonals are congruent, so the value of X is 7.
What is isosceles trapezoid?In an isosceles trapezoid, the two angles formed by each leg and a base are congruent, and the diagonals that connect opposite vertices are congruent as well.
According to question:An isosceles trapezoid is a four-sided polygon with two parallel sides that are of equal length and two non-parallel sides that are also of equal length. The non-parallel sides are often referred to as the legs of the trapezoid, and the parallel sides are called the bases.
In an isosceles trapezoid, the diagonals are congruent, so we can set KM and JL equal to each other and solve for x:
KM = JL
2x+10 = 5x-11
Subtracting 2x and adding 11 to both sides, we get:
21 = 3x
x = 7
Therefore, the value of x in the isosceles trapezoid is 7.
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how do i solve these ? ( step by step )
Therefore , the solution of the given problem of equation comes out to be the equation has a slope of 1/2 and a y-intercept of -1, and is written as y = 1/2x - 1.
How do equations work?In intricate algorithms, variable words are frequently used to demonstrate consistency between two incompatible assertions. Equations are academic expressions that are used to demonstrate the equality of different academic figures. In this instance, normalization results in c + 7 rather than a singular formula that divides 12 into two components and can be applied to data obtained from y + 9.
Here,
We must isolate y on the left side of the equation in order to convert the provided equations to the slope-intercept form y = mx + b, where m is the slope and b is the y-intercept.
=> y = -x - 4:
=> x + y = -4
=> y = -x - 4
As a result, the equation has a slope of -1 and a y-intercept of -4, and is written as y = -x - 4.
=> y = 1/2x - 1:
=> y - 1/2x = -1
=> y - 1/2x + 1 = 0
The words with y and the constant term must be combined in order to represent this equation in slope-intercept form:
=> y + 1 = 1/2x
By taking away 1 from both edges, we obtain:
=> y = 1/2x - 1
As a result, the equation has a slope of 1/2 and a y-intercept of -1, and is written as y = 1/2x - 1.
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Tell whether the angles are adjacent or vertical. Then find the measure of each angle.
The measure of the angles are 27 and 63 degrees. The angles are adjacent.
How to find adjacent angles?The two angles are said to be adjacent angles when they share the common vertex and side. In other words, adjacent angles have common side and vertex but do not overlap.
Therefore, the angles are adjacent angles.
The sum of the angles is 90 degrees. This means the angle is a right angle.
Therefore,
3x + 7x = 90
10x = 90
x = 90 / 10
x = 9
Therefore, the angles are as follows:
3(9) = 27 degrees
7(9) = 63 degrees
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a bag contains red balls, green balls, and yellow balls. if balls are drawn one at a time without replacement, the probability that the first yellow ball is drawn on the eighth draw is , what is the value of ?
The probability of drawing the first yellow ball on the eighth draw is 1/2772.
The probability of drawing a yellow ball on the eighth draw is the probability of drawing 7 non-yellow balls followed by a yellow ball.
The probability of drawing a non-yellow ball on the first draw is 7/12 since there are 7 non-yellow balls out of a total of 12 balls in the bag. After the first non-yellow ball is drawn, there will be 6 non-yellow balls left out of a total of 11 balls. So the probability of drawing a non-yellow ball on the second draw is 6/11. Continuing in this manner, the probability of drawing 7 non-yellow balls in a row is
(7/12) × (6/11) × (5/10) × (4/9) × (3/8) × (2/7) × (1/6)
Now, there are 5 yellow balls left out of a total of 5 + 7 + 3 = 15 balls. So the probability of drawing a yellow ball on the eighth draw is 5/15.
Therefore, the probability of drawing the first yellow ball on the eighth draw is
(7/12) × (6/11) × (5/10) × (4/9) × (3/8) × (2/7) × (1/6) × (5/15)
Simplifying this expression, we get
(7 × 6 × 5 × 4 × 3 × 2 × 1 × 5) / (12 × 11 × 10 × 9 × 8 × 7 × 6 × 15)
which simplifies to:
1/2772
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The given question is incomplete, the complete question is:
A bag contains 3 red balls, 4 green balls, and 5 yellow balls. If balls are drawn one at a time without replacement, what is the probability that the first yellow ball is drawn on the eighth draw?
a waste management company is designing a rectangular construction dumpster that will be twice as long as it is wide and must hold 20 yd^3 of debris. find the dimensions of the dumpster that will minimize its surface area.
The width of the dumpster that minimizes its surface area is approximately 1.71 yards, and the length is approximately 3.42 yards.
The length of the rectangular dumpster is equal to two times its width, or 2x, if x is its width. The dumpster's height is not specified, however it is not necessary for this issue.
We need to determine the dumpster's size to reduce the amount of surface area it has. The following sources provide the rectangular dumpster's surface area:
A = lw + lh + lw
where w stands for width, l for length, and h for height.
Given that the container must hold [tex]20 yd3[/tex] of waste, we can use the formula for the volume of a rectangular solid to create the following sentence:
[tex]V = lwh = (2x) (x)\\h = 2x^2 h = 20\\h = 10/x^2[/tex]
Inputting this expression for h into the surface area A formula yields the following results:
[tex]A = 2lw + 2lh + 2wh = 2(x)(2x) + 2(x)(10/x) + 2(2x)(10/x) = 4(x)(2x) + 40(x)[/tex]
We can take the derivative of A with respect to x, set it equal to zero, and solve for x to determine the dimensions that minimise A:
[tex]dA/dx = 8x - 40/x^2 = 0\\8x = 40/x^2\\x^3 = 5\\x = (5)^(1/3)\\[/tex]
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There are 59 students going on a field trip if costs 2$ no taxes how much money does it cost for all the students to go to the field trip
Answer:
$118
Step-by-step explanation:
If there are 59 students going on the field trip, and the cost is $2 per student, then the total cost for all the students to go on the field trip would be:
Total cost = Number of students × Cost per student
Total cost = 59 × $2
Total cost = $118
It would cost $118 in total for all 59 students to go on the field trip, assuming there are no taxes or additional fees involved.
Find the amount accumulated after
investing a principal P for t years at an
interest rate compounded k times per year.
k = 365
P = $3,350 r = 6.2% t = 8
Hint: A = P (1+)kt
A = $[?]
Hence, after investing $3,350 for 8 years at a 6.2% interest rate, compounded 365 times a year, the total amount is roughly $4,865.25.
what is amount ?In mathematics, the term "amount" typically refers to a number or a thing's numerical value. It can stand in for anything that can be counted or measured, such as the amount of money in a checking account, the time needed to finish a task, or the concentration of a specific item in a solution. Several branches of mathematics, such as arithmetic, algebra, and calculus, all depend on the idea of amount.
given
With a principal of P and an interest rate of r compounded k times annually, the amount amassed after t years is calculated as follows:
[tex]A = P(1 + r/k)^(kt) (kt)[/tex]
Putting in the specified values
P = $3,350
r = 6.2%
t = 8
k = 365
[tex]A = $3,350(1 + 0.062/365)^(365*8)[/tex]
A ≈ $4,865.25 (rounded to the nearest cent) (rounded to the nearest cent)
Hence, after investing $3,350 for 8 years at a 6.2% interest rate, compounded 365 times a year, the total amount is roughly $4,865.25.
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Latasha looked at 3 websites every 15 hours. At that rate, how long, in hours, will it take to look at 5 websites
Since Latasha looked at 3 websites every 15 hours, at that rate, it will take Latasha 25 hours to look at 5 websites.
What is the unit rate?The unit rate shows the ratio between two values.
The unit rate is the quotient of two numbers, computed using the division and multiplication operations.
The number of websites Latasha looked in 15 hours = 3
The time it will take Latasha to look at 5 websites = 25 (15/3 x 5)
Thus, based on the rate, we can conclude that Latasha uses 5 hours to look at one website.
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a ferris wheel has five cars, each containing four seats in a row. there are 20 people ready for a ride. in how many ways can the ride begin? what if a certain two people want to sit in different cars?\
There are 5 possible ways for the ride to begin.
The ferris wheel has 5 cars with 4 seats in each car, making a total of 20 seats. If there are 20 people ready for the ride, then each car can have 4 people. Therefore, there are 5 possible ways for the ride to begin.
If two certain people want to sit in different cars, then there are 4^2 (4x4) combinations of cars for these two people. This gives us 16 possible ways for the ride to begin.
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point N is the incenter of ∆ABC, NK=9x-1, and NL=5x+3. find NM
NM = 8,we need to use the fact that N is the incenter of triangle ABC. This means that the angle bisectors of ∠ABC, ∠ACB, and ∠BAC intersect at point N.
We can use the fact that the incenter of a triangle is the intersection of its angle bisectors, and that the incenter is equidistant from the sides of the triangle. This means that if NM is the distance from N to side BC, then NK and NL must be equal to NM as well.
We can set up an equation to solve for NM using the given information:
NK = NM = 9x - 1
NL = NM = 5x + 3
Since NK = NL, we can set the two expressions equal to each other:
9x - 1 = 5x + 3
Solving for x, we get:
4x = 4
x = 1
Now we can substitute x = 1 into either of the expressions for NK or NL to get the value of NM:
NM = NK = 9x - 1 = 9(1) - 1 = 8
NM=8
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in two successive years, the population of a town is increased by 12% and 25%. what percent of the population is increased after two years?
In two successive years, the population of the town increased by 12% and 25%. So the percentage of the population increased after two years is 40%
The population growth rate of the town can be calculated as follows:
The population of the town increased by 12% in the first year.
Hence, the population of the town after one year becomes 1.12x where x is the initial population of the town. In the second year, the population of the town increased by 25%.
Therefore, the population of the town after two years becomes
1.25(1.12x) = 1.4x.
Now, the percentage increase in the population of the town after two years can be calculated as follows:
Total percentage increase = ((New population - Old population) / Old population) x 100%
Total percentage increase = ((1.4x - x) / x) x 100%Total percentage increase = (0.4x / x) x 100%
Total percentage increase = 40 %
Therefore, the percentage increase in the population of the town after two years is 40%.
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Answer
D =
E =
Please help
Answer:
d = 3.75
e = 8/3
Step-by-step explanation:
8/6 = 5/d = e/2
4/3 = 5/d
4d = 3 × 5
d = 3.75
4/3 = e/2
3e = 4 × 2
e = 8/3
Emily and john will be hiking for 42 hours. Hikers should drink at 2. 7 cups of water for every 2 hours of hiking. How many cups of water should emily and john drink?
From the given information provided, emily and john should drink 56.7 cups of water for 42 hours hiking.
If hikers should drink 2.7 cups of water for every 2 hours of hiking, then we can use a proportion to find how much water Emily and John should drink over their 42-hour hike:
2.7 cups / 2 hours = x cups / 42 hours
To solve for x, we can cross-multiply:
2.7 cups × 42 hours = 2 hours × x cups
113.4 cups = 2x
Finally, we can divide both sides of the equation by 2 to solve for x:
x = 56.7 cups
Therefore, Emily and John should drink a total of 56.7 cups of water during their 42-hour hike.
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pLeAsE hElP
I need help solving this: 1+1
Answer:2
Step-by-step explanation:
1+1=2
Please use the information below for an arithmetic sequence to do the following:
a. sub 1 equals 3 d equals 4
A) List the first 6 terms of the sequence
B) Write the terms of this sequence as a series.
C) Provide a graph of the aritmetic sequence.
D) List the first 6 partial sums of the series.
SHOW ALL MATH WORK AND EXPLANATIONS FOR THIS FROM START TO FINISH! IT'S A 10 POINT PROBLEM!
Answer:
See below, please.
Step-by-step explanation:
A) The first term of the sequence is given as sub 1 = 3 and the common difference is given as d = 4. Therefore, the first 6 terms of the sequence are
sub 1 = 3
sub 2 = sub 1 + d = 3 + 4 = 7
sub 3 = sub 2 + d = 7 + 4 = 11
sub 4 = sub 3 + d = 11 + 4 = 15
sub 5 = sub 4 + d = 15 + 4 = 19
sub 6 = sub 5 + d = 19 + 4 = 23
B) The terms of this sequence can be written as a series as
3 + 7 + 11 + 15 + 19 + 23 + ...
C) The graph of the arithmetic sequence is a straight line with a positive slope, as each term of the sequence is obtained by adding a constant (d = 4) to the previous term.
D) The first 6 partial sums of the series can be calculated as
S1 = 3
S2 = 3 + 7 = 10
S3 = 3 + 7 + 11 = 21
S4 = 3 + 7 + 11 + 15 = 36
S5 = 3 + 7 + 11 + 15 + 19 = 55
S6 = 3 + 7 + 11 + 15 + 19 + 23 = 78
Therefore, the first 6 terms of the sequence are 3, 7, 11, 15, 19, and 23. The terms of the sequence can be written as a series as 3 + 7 + 11 + 15 + 19 + 23 + ..., and the graph of the sequence is a straight line with a positive slope. The first 6 partial sums of the series are 3, 10, 21, 36, 55, and 78.
Find the volume of a right circular cone that has a height of 20 ft and a base with a radius of 18 ft. Round your answer to the nearest tenth of a cubic foot
Answer:
The answer should be 20,365.714 but I am not sure
Step-by-step explanation:
i have a deck of cards, and i deal all of the cards to players, with each player getting cards. if is at least and is at least , then how many possible values of are there?
Answer:
4
Step-by-step explanation:
We want xy=54=2*3^3 such that x is at least 2 and y is at least 5. Thus, the possible combinations (x,y) are (2,27), (3,18), (6,9), and (9,6). There are 4 such combinations.
a line segment has endpoints (0, 5) and (6, 5). after the line segment is reflected across the x-axis, how long will it be?
The length of the reflected line segment is approximately 11.66 units.
The endpoints of the line segment mentioned in the question are (0,5) and (6,5). After the line segment is reflected across the x-axis, the endpoints of the reflected line segment are (0, -5) and (6, -5).To find the length of the reflected line segment, we will use the distance formula.
Using the distance formula:d = √[(x₂ - x₁)² + (y₂ - y₁)²]d = √[(6 - 0)² + (5 - 5)²]d = √[36 + 0]d = √36d = 6 units. So the length of the original line segment is 6 units.Now, let's find the length of the reflected line segment.Using the distance formula :d = √[(x₂ - x₁)² + (y₂ - y₁)²]d = √[(6 - 0)² + (-5 - 5)²]d = √[36 + 100]d = √136d = 11.66 (approx) units. So the length of the reflected line segment is approximately 11.66 units.
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What is the image point of ( 1 , 8 ) after a translation left 2 units and down 1 unit?
Answer: It should be -1,7
Step-by-step explanation: x=1-2=-1
y=8-1=7
Answer:
(-1, 7)
Step-by-step explanation:
A left translation is a negative number affecting the x-coordinate.
1 - 2 = -1
A down translation is a negative number affecting the y-coordinate.
8 - 1 = 7
(1, 8) --------> (-1, 7)
which numbers will round to 19 when they are rounded to the nearest whole number? select each correct answer. responses 19.46 19.46 18.48 18.48 19.91 19.91 18.82 18.82 19.33 19.33 1, fully attempted. 2, fully attempted. 3, fully attempted. 4, fully attempted. 5, fully attempted. 6, fully attempted. 7, unattempted. 8, unattempted.
The numbers that will round to 19 when rounded to the nearest whole number are 19.46 and 19.91.
To round a number to the nearest whole number, we look at the decimal part of the number. If it is less than 0.5, we round down to the nearest integer. If it is greater than or equal to 0.5, we round up to the nearest integer.
For the given set of numbers, we can round them to the nearest whole number and check which ones round to 19:
19.46 rounds up to 19
18.48 rounds down to 18
19.91 rounds up to 20
18.82 rounds up to 19
19.33 rounds up to 19
Therefore, the numbers that round to 19 when rounded to the nearest whole number are 19.46 and 19.33.
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Brainlist answer
I will make you brainlist but show all steps and the answer needs to be correct!
Answer:
[tex]11xy - 9x + 2y[/tex]
Step-by-step explanation:
[tex]6xy - 9x + 5xy + 2y[/tex]
Add the xy terms together:
[tex]11xy - 9x + 2y[/tex]