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2 years ago

????????????????????

Mathematics

1 answer:

Nat2105 [25]2 years ago

7 0

Answer:

slope: 1/3

y-intercept: 3

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Which equation represents a direct linear variation?

nevsk [136]

Y=(1/2)x cause the constant variation is 1/2

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3 years ago

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Increase 18 by a half

chubhunter [2.5K]

Answer:

Step-by-step explanation:

if we were decreasing it would be 9 but if we are increasing it, it would be 36

just multiply by 2 or divide by 2

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3 years ago

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Solve by graphing <br><br> u=v and 6u=2v-24

Vadim26 [7]

Answer:

$u=-6 \\ \\ v=-6$

Step-by-step explanation:

In this exercise, we have two equations, namely:

$u=v \ and \ 6u=2v-24$

And we are asked to solve this problem by graphing. In this way, we can write a system of linear equations in two variables, but first of all, let's rewrite:

$u=y \\ \\ v=x$

Then:

$\left\{ \begin{array}{c}y=x\\6y=2x-24\end{array}\right.$

So here we have two lines.

The first one is:

$\boxed{y=x}$

This line passes through the origin and has a slope $m=1$

The second one is:

$6y=2x-24 \\ \\ \therefore y=\frac{2x-24}{6} \\ \\ \therefore \boxed{y=\frac{1}{3}x-4}$

This line has a slope $m=\frac{1}{3}$ and cuts the y-axis at $b=-4$

By using graph tools, we get the graph shown below, then:

$x=-6 \\ \\ y=-6 \\ \\ \\ Since \ u=y \ and \ v=x, then: \\ \\ u=-6 \\ \\ v=-6$

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3 years ago

Jasmine sold 90 rolls of wrapping paper jasmine sold 2 times as many rolls of wrapping paper is Carly how many rolls of wrapping

Nina [5.8K]

First find out how many Carly sold:-

90 ÷ 2 = 45
Carly sold 45 rolls

Add to find out how many the sold together:-

90 + 45 = 135

Jasmine and Carly sold 135 rolls of wrapping paper together.

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3 years ago

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Andy runs 436.8 meters in 62.08 seconds.if Andy runs at a consistent speed how fast does he run in one second? Give your answer

Zina [86]

Andy runs 7 meters per second.

436.8/62.08 = x/1
436.8/62.08=7.04
7.04/1 =7.0/1

Hope that help!:)

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2 years ago