Answers
A- The Sum of the series is 2 - 20 + 200 .. is 2/11. B- the 12th term of the geometric sequence is option C -112.
We can observe that each term in the series is obtained by multiplying the previous term by -10.
Let the first term be a = 2, and the common ratio be r = -10.
Using the formula for the sum of an infinite geometric series, we have:
So = a / (1 - r)
So = 2 / (1 - (-10))
So = 2 / 11
So the sum of the given series is 2/11.
b- We can use the formula for the nth term of a geometric sequence to find the 12th term.
aₙ = a1×rⁿ-¹
where a1 is the first term and r is the common ratio.
We are given two terms in the sequence:
a7 = 7
a56 = ?
We can use these to find a1 and r.
First, we can find the common ratio:
r = a7 / a6 = 7 / (a7 / r) = 7 / a56
Next, we can use the formula to find a1:
aₙ = a2×rⁿ-¹
Substituting the values we know:
r = 7 / a56
Simplifying:
a1= a56^6
Now we can use the formula to find a12:
a12 = a1 * r^(12-1)
Simplifying:
a12 = 7^11 * a56^(-5)
Therefore, the 12th term of the sequence is a negative number, and the only negative option given is (c) -112. So the answer is (c) -112.
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Related Questions
A,B and c lie on a straight line segment A , E and d lie on a straight line segment AB = 5cm AC= 30cm and EB = 4cm work out the length of dDC
Answers
The length of dDC is 16 cm. We can use the similarity of triangles ACD and ABE to find the length of DC.
We know A,B and c lie on a straight line segment A , E and d lie on a straight line segment
AC/AB = AD/AESubstituting the given values, we get:
30/5 = AD/(AD+4)Simplifying the equation, we get:
AD = 20
Now, we can use the similarity of triangles ACD and ABE again, to find the length of DC.
CD/BE = AD/AE
Substituting the values, we get:
CD/4 = 20/(20+5)
Simplifying the equation, we get:
CD = 16
Therefore, the length of dDC is 16 cm.
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what is the difference of (4m^2-5) -(5m-20)
Answers
Answer:
4m^2+15-5m
Step-by-step explanation:
Remove parentheses.
4m^2-5-5m+20
Collect like terms.
4m^2+(-5+20)-5m
Simplify
4m^2+15-5m
complaints about an internet brokerage firm occur at a rate of 3 per day. the number of complaints appears to be poisson distributed. a. find the probability that the firm receives 2 or more complaints in a day. probability
Answers
The probability that the firm receives 2 or more complaints in a day is 0.33.
This can be calculated using the Poisson distribution formula. The Poisson distribution is a probability distribution used to calculate the probability of an event occurring a given number of times in a fixed interval of time or space.
It is based on the assumption that the rate of occurrence of an event is constant.
In this case, we are looking at the probability of the firm receiving 2 or more complaints in a day. Let x = 2, where x is the number of complaints in a day. Then, the Poisson distribution formula is: P(x) = (e-λ λx) / x!
Where e = 2.71828 and λ = 3 (the rate of complaints per day).
Plugging in the values, we get: P(2) = (2.71828-3 * 32) / 2! = 0.33. Therefore, the probability that the firm receives 2 or more complaints in a day is 0.33.
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The measures of the angles of a triangle are shown in the figure be
45°
106⁰
C
Search
(2x-9)°
PLS HURRY !!
Answers
x = 19
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?
Answers
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?
Answers
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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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?\
Answers
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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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?
Answers
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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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!
Answers
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.
Tell whether the angles are adjacent or vertical. Then find the measure of each angle.
Answers
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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Answer
D =
E =
Please help
Answers
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
If you add two positive numbers together, which of the following is true about the result?
Answers
Answer:
If you add two positive numbers together you will get a positive.
Step-by-step explanation:
What is the image point of ( 1 , 8 ) after a translation left 2 units and down 1 unit?
Answers
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)
a square has side length of 7.3 in . if the area is multiplied by 19 , what happens to the perimeter?
Answers
The new perimeter is 127.2 inches if it is multiplied by 19.
What do you mean by the are and perimeter of the square ?
The area of a square is calculated by squaring the length of one of its sides. If the area of a square is multiplied by a factor, the length of the sides will be multiplied by the square root of that factor. One way to express the concept of perimeter for a square is to state that it is the total distance around the outer boundary of the shape, which is equal to the sum of the lengths of all four sides.
Determining the the value of perimeter :
The area of the square is [tex]7.3 \times 7.3 = 53.29[/tex] square inches.
If this area is multiplied by 19, the new area will be 1012.51 square inches.
To find the new side length of the square, we take the square root of the new area:
[tex]\sqrt{1012.51} = 31.8[/tex] (rounded to one decimal place)
Therefore, the new side length of the square is 31.8 inches.
To find the new perimeter, we multiply the new side length by 4:
[tex]31.8 \times 4 = 127.2[/tex]inches
So the new perimeter is 127.2 inches.
To summarize, when the area of the square with side length 7.3 inches is multiplied by 19, the perimeter is multiplied by the square root of 19, which is approximately 4.36. The new perimeter is 127.2 inches.
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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.
Answers
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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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.
Answers
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
point N is the incenter of ∆ABC, NK=9x-1, and NL=5x+3. find NM
Answers
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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Brainlist answer
I will make you brainlist but show all steps and the answer needs to be correct!
Answers
6xy + 5xy - 9x + 2y
The only numbers with “like terms” which means same type of letters, are the xy ones.
6+5 = 11, so add xy after it
11xy -9x + 2y
After that, you cannot simplify anymore because there is no other xy with a number and the 9x and 2y are also not the same letters. I hope that makes sense and helps.
Therefore the answer is
11xy -9x + 2y
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]
I need help with this please
Answers
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
Which of the following shows that the two composite figures cover the same area?
-7
5
y
7
X
Answers
The option that correctly shows the area of the composite figures is:
B: For both figures, A = 6 + 4 + 2 + 2 + 1 = 15 units²
How to find the area of a composite figure?The area of a triangle is given by the formula:
A = ¹/₂ * base * height
Area of rectangle = Length * Width
Area of shape on left = (4 * 2) + (2 * 2) + (¹/₂ * 2 * 1) + (¹/₂ * 2 * 2)
Area of shape on left = 8 + 4 + 1 + 2
Area of shape on left = 15 units²
Area of shape on the right = (¹/₂ * 6 * 3) + (¹/₂ * 4 * 3)
Area of shape on the right = 9 + 6
Area of shape on the right = = 15 units²
Thus, option B is the correct option showing the area of the composite figures.
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Use the Figure below to Answer this question
Answers
In linear pair, Value of x is 133° .
What is linear pair in math?
When two lines meet at a single point, a pair of linear angles is created. If, following the junction of the two lines, the angles are next to one another, they are said to be linear. A linear pair's total angles are always equal to 180 degrees.
A pair of neighboring angles created by the intersection of two lines is referred to as a linear pair. A linear pair is formed in the illustration by the numbers 1 and 2. The same goes for pairs 2 and 3, 3 and 4, and 1 and 4. In a linear pair, the two angles are always supplementary, which implies that their sum total is 180 degrees.
47° + x° = 180°
x° = 180° - 47°
= 133°
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8x 2 + [ 3x3-8] = with explanation pls and its due in six minutes
Answers
Answer: 16x+3x^3−8
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Tiana drew a scale drawing of a picnic area near the river. She used the scale 1 inch : 7 yards. If the picnic area is 7 inches wide in the drawing, how wide is the actual picnic area?
Answers
If the picnic area is 7 inches wide in the drawing, then the actual width of the picnic area can be found by multiplying the drawing width by the scale factor:
Actual width = Drawing width x Scale factor
Actual width = 7 inches x 7 yards/inch
Actual width = 49 yards
Therefore, the actual width of the picnic area is 49 yards.
Which is the most accurate way to estimate 48% of 39?
Answers
Answer:
18.72
Step-by-step explanation:
48% is 0.48 as a decimal
0.48*39=18.72
Center of Triangles I please help
Answers
The value of angle CI is equal to 40 for the triangle.
What is geometry?
Geometry is one of the oldest branches of mathematics, along with arithmetic. It is concerned with spatial properties such as figure distance, shape, size, and relative position.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that I is the incenter of the triangle AI = 3x+7, BI = 5x-11, and CI = 52-2x.
The value of BI will be calculated as,
AI = BI
3x + 7 = 5x - 11
2x = 18
x = 6
Now for the value of angle CI:
CI = 52 - 2x
CI = 52 - 2 x 6
CI = 52 - 12
CI = 40
Therefore, the value of angle CI is equal to 40 for the triangle.
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the value of a boat is 21 200. it loses 6 of its value every year. find the approximate monthly percent decrease in value.
Answers
The approximate monthly percent decrease in value of the boat is 0.5%.
The given value of a boat is 21 200, and it loses 6% of its value every year. We are to find the approximate monthly percent decrease in value.
The given information is as follows: The value of a boat = $21,200The percentage decrease in value = 6%We are to find the approximate monthly percent decrease in value. Annual decrease in value of a boat is 6% of $21,200= $1,272Monthly decrease in value of a boat will be 1/12 of the annual decrease = $1,272/12≈ $106Thus, the approximate monthly percent decrease in value of the boat will be
[tex]$\frac{106}{21,200}*100\%=0.5\%$[/tex]
Therefore, the approximate monthly percent decrease in value of the boat is 0.5%.
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Your question is incomplete, but probably the complete question is :
The value of a boat is $21,200. It loses 6% of its value every year. Find the approximate monthly percent decrease in value. Round your answer to the nearest hundredth of a percent.
Find the value of X in the isosceles trapezoid
Answers
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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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.
Answers
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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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
Answers
Answer:
The answer should be 20,365.714 but I am not sure
Step-by-step explanation:
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?
Answers
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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