Answers
Answer:
13.67
Step-by-step explanation:
Related Questions
1. Mckayla is using elimination to solve the
system below and will first add the equations
together.
5x - 2y = 42
-3x + 2y = -26
Answers
so add the two equations together and you're left with 2x = 16, (they y's cancelled each other out) then divide two on both sides to get x = 8
now, use that x value in either equation (it doesn't matter which), we can use -3x+2y=-26
plug it in to get -3(8) + 2y = -26
which is then -24 + 2y = -26
add 24 to both sides: 2y = -2
divide 2 on both sides: y = -1
now knowing x=8 and y= -1 we can say that the answer is (8,-1)
hope this helps!!
i do not understand how proportionality works
Answers
Answer:
3.5
Step-by-step explanation:
In this problem, the line's constant of proportionality is the same as its slope.
Slope is defined as rise / run (also notated as change in y / change in x).
Using the given point, we can deduce that the line's rise (change in y) is 3.5, and its run (change in x) is 1. Putting these values into the slope formula:
3.5 / 1 = 3.5
So, the constant of proportionality of this line is 3.5.
How do you find an inverse?
Answers
Answer:
by using 1 to divide the value
Step-by-step explanation:
the inverse of 5/8 is 8/5.
A culture of bacteria has an initial population of 7100 bacteria and doubles every 2 hours. Using the formula P_t = P_0\cdot 2^{\frac{t}{d}}P t =P 0 ⋅2 d t , where P_tP t is the population after t hours, P_0P 0 is the initial population, t is the time in hours and d is the doubling time, what is the population of bacteria in the culture after 15 hours, to the nearest whole number?
Answers
The population of bacteria in the culture after 15 hours, to the nearest whole number would be 1285235
A culture of bacteria has an initial population of 7100 bacteria and doubles every 2 hours.
Given that,
P_t = P_0 * 2^(t/d) , which refers to the formula for the calculation of the number of bacterial cell in a population.
In the given formula, P_t is the population after t hours, P_0 is the initial population, t is the time in hours and d is the doubling time in hours,
Therefore,
P_0 = 7100
d = 2
t = 15
so,
P_15 = 7100 * 2^(15/2) = 7100 * 181.019= 1285234.9 which is nearly equal to 1285235
A culture of bacteria has an initial population of 7100 bacteria and doubles every 2 hours, the population of bacteria in the culture after 15 hours, to the nearest whole number would be 1285235
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The first figure is dilated to form the second figure!
Which statement is true?
The scale factor is 0.25
The scale factor is
The scale factor is 4.35
The scale factor is 7.25
Answers
The first figure is dilated to form the second figure, the statement according to will be the scale factor is 0.25.
What is ratio?The ratio notion is used in mathematics when evaluating two or more numbers. It works as a comparison tool to demonstrate how big or small a particular number is.
A ratio divides two quantities in order to compare them.
As per the given information in the question,
We have two side lengths,
First figure: This represents the object length, which is a diamond with a length equal to 5.8.
Second figure:The picture length is then represented by a small diamond with sides that measure 1.45.
So, the scale factor is,
k = Image length/Object length
k = 1.45/5.8
k = 0.25.
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A recipe for brownies calls for 1/8 cup of sugar and the recipe makes 12 brownies what fraction of a cup is in each brownie? THANKS!
Answers
Answer: [tex]\frac{1}{96}[/tex]
Step-by-step explanation:
([tex]\frac{1}{8}[/tex])/12
Divide the fraction [tex]\frac{1}{8}[/tex] by 12. This is because we need to split the sugar between 12 brownies, and to split something means to divide it. Use the switch, flip and multiply method.
I inserted an image on how to use this method.
Anyway, to use this method, we need 2 fractions, so instead of 12, we have to use [tex]\frac{12}{1}[/tex].
[tex]\frac{1}{8}/\frac{12}{1}[/tex]
= [tex]\frac{1}{8}[/tex] × [tex]\frac{1}{12}[/tex] Multiply the denominators and numerators
= [tex]\frac{1}{96}[/tex]
help plsss its due by tonight!!
Answers
Answer:
i am pretty sure the answer is d.
Step-by-step explanation:
let me know if this is wrong
Given that $x$ is a positive integer less than 100, how many solutions does the congruence $x 13 \equiv 55 \pmod{34}$ have
Answers
There are three solutions to the congruence x+13=55 (mod 34).
What is congruence?Two figures are considered to be 'congruent' if they can be put exactly over each other. When you set one slice of bread on top of the other, you'll see that they're both the same shape and size. The phrase "congruent" refers to having exactly the same form and dimension. When two things or forms superimpose on each other, they are said to be congruent. Their shapes and sizes are identical. Line segments with the same length and angles of the same measure are congruent in the case of geometric forms.
Here,
something equaling 55 (mod 34) is unusual to say the least as 55 mod 34 = 21
do you mean x+13=21 (mod 34) ?
clearly x = 8 + 34k which gives 8, 42, 76 begin less than 100
The congruence x+13=55 (mod 34) has three solutions.
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If anyone knows the answer for this question please help!
7th grade math.
Answers
Answer:
47°
Step-by-step explanation:
(180 - 86) / 2 = measure of each congruent angle
94/2 = 47
HELPPPPPP ASAPPPPPP!!!!
Answers
Answer:
6.96cm^2
Step-by-step explanation:
Area of triangle:
Base*height/2
5.8*2.4/2
Area = 6.96cm^2
Answer:
the answer is c
Step-by-step explanation:
when you look for the area you multiply so its c
30 + 10 ⋅ 5 – 45 ÷ 5
Answers
Answer:
71
Step-by-step explanation:
30+10×5-45÷5= 30+50-9=71
Let f(x) = x − 2 and g(x) = x^3. What is (f ◦ g)(2)?
Answers
Show the correct relationship between altitude and boiling point.
Altitude
Boiling Point Temp.
Answers
The relationship between altitude and boiling point is given below.
What is altitude?
Altitude is the height above sea level. It is usually measured with a barometer or GPS satellite. Altitude can be used to describe the height of an airplane, a mountain, or even the position of a satellite in space. Altitude can also be used to measure how high a person is standing on Earth. Altitude can also be used to compare the relative heights of two different points on Earth. Altitude is an important factor when flying, as it can determine air pressure, air temperature, and wind speed.
Sea Level 212°F
1,000 ft. 211°F
2,000 ft. 210°F
3,000 ft. 209°F
4,000 ft. 208°F
5,000 ft. 207°F
6,000 ft. 206°F
7,000 ft. 205°F
8,000 ft. 204°F
9,000 ft. 203°F
10,000 ft. 202°F
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which number is equivalent to (-14+6)-8÷4×4
Answers
Answer:
0
Step-by-step explanation:
-8-8+4×4
-8-8+16
-16+16
=0
Lia need to ell at leat 140 card to make a profit. Monday-thurday he ell 15,7,14,45 card. How many more will he need to ell on friday to make a profit?
Answers
Lisa needs to sell fifty nine (59) cards on Friday to make a profit, based on total 140 cards and the information on number of cards sold per day.
The total number of cards to be sold for profit = number of cards sold till Thursday + Remaining cards
We need to calculate remaining cards, but before that, we will find the sum of sold cards.
Number of cards sold = 15 + 7 + 14 + 45
Performing addition on Right Hand Side of the equation
Number of cards sold = 81
Remaining cards = 140 - 81
Performing subtraction on Right Hand Side of the equation
Remaining cards = 59
Thus, required number of cards is 59.
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The complete question is-
Lisa need to sell at leat 140 card to make a profit. Monday-thursday she sell 15,7,14,45 card. How many more will she need to sell on friday to make a profit?
How many two digit numbers are divisible by 4 or 7?
Answers
Step-by-step explanation:
there are 22 two digit numbers divisible by 4.
there are 13 two digit numbers divisible by 7.
33. What is the proper way to install a roll of toilet paper: the "over” position, in which the portion you grab hangs over the top of the roll, or the "under" position, in which the portion you grab hangs under behind the roll? A curious student investigated this question by asking a random sample of 10 custodians and a random sample of 50 adults that are not custodians. The table summarizes the results: Custodian Non-Custodian Adult Over 32 Under 2 If one of these individuals is randomly selected, what is the probability that they are a custodian, given that they said "over"?
(A)8/40
(B) 8/50
(C) 8/60
(D) 16:40
(E) 16/100
Answers
Answer:
Step-by-step explanation:
8/40
The correct answer is (A). Of the 40 individuals that said that “over” is the correct way to install a roll of toilet paper, 8 were custodians, so the probability is 8/40.
**Please help ASAP
A sum of $2000 needs to be split among three people so that the first person receives $120 more than the second person and the third person receives twice as much as the second person. Set up and solve an equation or equations to determine how much each person will receive.
Answers
Answer:
1st person will receive = $590
2nd person will receive = $470
3rd person will receive = $940
Step-by-step explanation:
Total divisible amount = $2000
according to the question:
let 2nd person's received amount = x
1st person's received amount = x + 120
3rd person's received amount = 2x
x + x + 120 + 2x = 2000
4x + 120 = 2000
4x = 2000 - 120
4x = 1880
x = 1880 / 4
thus,
x = 470
1st person will get = x + 120 = 470+120 = $590
2nd person will get = x = $470
3rd person will get = 2x = 2 * 470 = $940
Multiply the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending powers of x. (8x 3)(4x 7)
Answers
The product of the two polynomials is (8x³)(4x⁷) = 32x¹⁰.
THE POLYNOMIALSWhen we multiply two polynomials together, we add the exponents of the x's in each term. In this case, we have 8x³ and 4x⁷. The x in 8x³ has an exponent of 3, and the x in 4x⁷ has an exponent of 7. To find the product of the two polynomials, we add the exponents of the x's in each term, so 3 + 7 = 10. The x in the product will have an exponent of 10. The coefficient, or the number in front of the x, is also multiplied together, so 8 × 4 = 32.So the final answer is 32x¹⁰, where 32 is the coefficient and 10 is the exponent of x.The polynomial 32x¹⁰ is an example of a polynomial, but it's not a characteristic of a polynomial.A polynomial is a mathematical expression involving a sum of powers in one or more variables (such as x, y, z) with non-negative integer exponents and real or complex coefficients. A polynomial can have one or more terms, and each term is separated by a plus or minus sign.Learn more about polynomial here:
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Sally has 4 apples for school lunch, her friend asks if she can 2 apples for Sally's 4 apples. How many more apple would Sally have left after giving her friend 2?
Answers
Answer:Sally would have 2 apples left
Step-by-step explanation:Because 4-2=2 so she gave 2 away so she has 2 left.
What is the y-intercept of the quadratic function f/x )=( x 6 )( x 2?
Answers
The y-intercept of the quadratic function f(x) = (x - 6)(x + 2) is -12.
The y-intercept of a quadratic function is the point at which the graph of the function crosses the y-axis. This means that when x = 0, the value of y is equal to the y-intercept. In the case of the function f(x) = (x - 6)(x + 2), when x = 0, the value of y is equal to -12. This means that the y-intercept of the function is -12. To find the y-intercept, we can also substitute 0 for x in the equation, which would give us 0 = (0 - 6)(0 + 2), which simplifies to 0 = -12, and thus the y-intercept is -12.
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In an examination, Kavita obtained 72%marks.If the maximum marks are 650, find the marks obtained by Kavita.
Answers
Answer:468
Step-by-step explanation:cause of the max mark is 650 /100=6.5 (1%)
then 6.5*72=468
john bought 53 cartons of eggs,and each had 24 eggs.250 of the eggs were bad.how many good eggs did she get?
Answers
Answer:
1022
Step-by-step explanation:
total of eggs
= 53 × 24
= 1272
the good eggs
= 1272 - 250
= 1022
A. 13 X 14
B. 7 X 6
C.20 X 7
D. 103 X 104
Answers
You roll a number cube numbered from 1 to 6. What is the probability that the number is a 3? (Answers are rounded to the nearest hundredth percent.)
Answers
Answer:
1/6
Step-by-step explanation:
Please help me I am struggling with this
Answers
Step-by-step explanation:
(1). x-intercept: Put y = 0 in the equation y = 2x - 6 and solve for x. The x-intercept is 3.
y-intercept: Put x = 0 in the equation y = 2x - 6 and solve for y. The y-intercept is -6.
(2). x-intercept: Put y = 0 in the equation y = x - 7 and solve for x. The x-intercept is 7.
y-intercept: Put x = 0 in the equation y = x - 7 and solve for y. The y-intercept is -7
(3). x-intercept: Put y = 0 in the equation y = (3/2)x - 9 and solve for x. The x-intercept is -6.
y-intercept: Put x = 0 in the equation y = (3/2)x -9 and solve for y. The y-intercept is -9.
(4). x-intercept: Put y = 0 in the equation y = (-1/4)x + 1 and solve for x. The x-intercept is -4.
y-intercept: Put x = 0 in the equation y = (-1/4)x + 1 and solve for y. The y-intercept is 1.
(5). x-intercept: Put y = 0 in the equation -x + y = -5 and solve for x. The x-intercept is 5.
y-intercept: Put x = 0 in the equation -x + y = -5 and solve for y. The y-intercept is -5.
(6). x-intercept: Put y = 0 in the equation x + 2y = -14 and solve for x. The x-intercept is -14.
y-intercept: Put x = 0 in the equation x + 2y = -14 and solve for y. The y-intercept is -7.
(7). x-intercept: Put y = 0 in the equation 3x - y = -3 and solve for x. The x-intercept is -1.
y-intercept: Put x = 0 in the equation 3x - y = -3 and solve for y. The y-intercept is 3.
(8). x-intercept: Put y = 0 in the equation 5x + 3y = 15 and solve for x. The x-intercept is 3.
y-intercept: Put x = 0 in the equation 5x + 3y = 15 and solve for y. The y-intercept is 5.
Write A=C+Kx in words variation
Answers
In word variation, we can write as;
⇒ In the equation, A = C + Kx, if K is a nonzero constant and C = 0, then you have the function A = Kx, which is called a direct variation.
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
We have to given that;
The equation is,
⇒ A = C + Kx
Now, We know that;
The direct variation is of the form of y = kx.
Here, The equation is,
⇒ A = C + Kx
Hence, Its words variation is written as;
In the equation, A = C + Kx,
if K is a nonzero constant and C = 0, then you have the function A = Kx, which is called a direct variation.
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Find the equation of the line passing through the given point and parallel to the given line.
Answers
Answer:
[tex]y-2=-\frac{1}{2}(x-3)[/tex]
Step-by-step explanation:
[tex]x+2y=5 \\ \\ 2y=-x+5 \\ \\ y=-\frac{1}{2}x+\frac{5}{2}[/tex]
The slope of the given line is [tex]-\frac{1}{2}[/tex].
This means the slope of any line parallel to the given line is also [tex]-\frac{1}{2}[/tex].
Using point-slope form, the equation is [tex]y-2=-\frac{1}{2}(x-3)[/tex].
5. A softball has a diameter of 8. 3 in. How many softballs will fit inside of a storage unit 4 that is 15 feet wide, 10 feet long, and 5 feet high?
Answers
4366 softballs will fit inside of a storage.
What is volume ?
A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units. Volume and the notion of length are connected.
The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.
The basic formula for volume is length, breadth, and height, as opposed to length, width, and height for the area of a rectangular shape. The calculation is unaffected by how you refer to the various dimensions; for instance, you can use "depth" instead of "height."
Diameter of softball = 8.3 in
Radius of softball = 4.15 in
= 0.345 ft
Volume of sphere = 4/3 π r³
= 4/3 π (0.345)³
= 4/3 * 0.1289
= 0.1718
Volume of cuboid = l * b * h
= 15 * 10 * 5
= 750
Number of softballs that can fit inside the storage = 750 / 0.1718
= 4366
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6) A paint store has 240 gallons of paint to pack into boxes. Each box can hold 4 gallons of
paint. Which of the following equations can be used to find the number of boxes the paint
store can pack?
Choose ALL the correct answers.
a) 240 =
b) 4x
÷
+4
= 240
_=240 +4
= 240
= 240 x 4
Answers
Answer: 347
Step-by-step explanation: