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seropon [69]
3 years ago
12

Y varies directly as x y = 120 when x = 8 find y when x = 14

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

y = 120

Step-by-step explanation:

this is the formula

y = kx

now insert the numbers to find k

120 = k8

120/8

k = 15

now insert 15 into the equation where k was

y = 15 x 14

y = 210

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Which measure describes how much a sample mean varies when different samples are chosen?
Nataliya [291]

Step-by-step explanation:

the most common measure of how much sample mean differ from each other is the standard deviation of the sampling distribution of the mean. this standard deviation is called the standard error of the mean

6 0
3 years ago
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A line passes through (2, 8) and (4, 12). Which equation best represents the line? y = 1 over 2 x 6 y = 2x 7 y = 2x 4 y = 1 over
nalin [4]

Equation of the line is a way to represent the a line in a equation or algebraic from which is the set of the line thorough witch the line passes.

Given information-

The point through which the line passes are (2, 8) and (4, 12).

To find the equation of the line, the standard form of the equation of the line must be obtained.

<h3>Equation of the line</h3>

Equation of the line is a way to represent the a line in a equation or algebraic from which is the set of the line thorough witch the line passes.

The standard form of the equation of the line can be given as,

(y-y_1)=\dfrac{y_2-y_1}{x_2-x_1} (x-x_1)

Where (x_1,y_1) and (x_2,y_2) are the points through which the line passes.

Thus the equation of the line which passes through the points (2, 8) and (4, 12) can be given as,

(y-8) &=\dfrac{12-8}{4-2} (x-2)\\(y-8) &=\dfrac{4}{2} (x-2)\\2y-16 &=4x-8\\2y &=4x-8+16\\

Divide by 2 both the side,

y=2x-4

Thus the equation of the line which passes through the points (2, 8) and (4, 12) is,

y=2x-4

Hence the option 3 is the correct option.

Learn more about the equation of the line here;

brainly.com/question/2564656

7 0
2 years ago
Eunique scores 20 points during the game. This is eleven more than three-fifths of the points she scored in previous game. How m
Ket [755]

Answer:

Step-by-step explanation:

If we call the points she scored in the last game x, we can actually write out an equation to describe what is being said.  20=11+(3/5)x.  Hopefully that makes sense.  3/5 of the previous score plus 11 is 20.  Anyway, you can just solve this algebraic expression for x.

20=11+(3/5)x subtract 11 from both sides

9 = 3/5 x Multiply both sides by 5

45 = 3x then divide both sides by 3

15 = x And there you go.  

6 0
3 years ago
I may or may not be dumb in the brain... I'll give brainliest to whoever answers first and correctly.​
Marrrta [24]

Answer:

23 degrees

Step-by-step explanation:

6x + 42 = 180

x = 23

7 0
3 years ago
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2p + 3x = 680 x = 2p
svlad2 [7]
Use substitution. 

2p + 3(2p) = 680
2p + 6p = 680
8p = 680
p = 85

Plug in.
x = 2p
x = 2(85)
x = 170
p = 85
3 0
3 years ago
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