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balu736 [363]
4 years ago
14

How do you know if two quantities vary directly?

Mathematics
1 answer:
Andrews [41]4 years ago
6 0
Write an equation to model this situation. Then complete the input-output table below; and graph the equation on the coordinate plane provided. If two quantities x and y are directly proportional to one another, (meaning if x is doubled, so is y; if x is tripled, so is y), they show direct variation.
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Are the two expressions equivalent?
Diano4ka-milaya [45]

Answer:

C

Step-by-step explanation:

11z+9z (11+9)z

20z (20)z

(11•5)+(9•5) (11+9)5

55+45 (20)5

100 100

3 0
4 years ago
Every year, census researchers collect data from 850 public and private hospitals across the United States. Which issue will inv
oksian1 [2.3K]

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Option C

Step-by-step explanation:

For a better, clear and unbiased sampling, choosing randomly might not allow for a biased sampling. Choosing in an alphabetical order might not give a representative of the whole hospitals both private and public, thus invigilator the conclusion of our hypothesis test.

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Triangle ABC ≅ DEF. Each side of triangle ABC is 1.5 times longer than the corresponding sides of triangle DEF. If the perimeter
mina [271]

Answer:

Step-by-step explanation:

see attachment

5 0
3 years ago
Consider the following figure:
lapo4ka [179]

Answer:

A cylinder with radius 5

Step-by-step explanation:

6 0
3 years ago
Give the slope of y+2=3(x-7) and a point on the line
Alborosie
Hey!


There's two ways we can find the slope intercept form for this equation. Which would be to convert to standard form, or convert to slope intercept form. In this case, I'll be converting the equation to slope intercept form.

<em>Slope Intercept Form Formula :</em>
y = mx + b

Now, we'll write out our original equation and covert it.

<em>Original Equation :</em>
<span>y + 2 = 3 ( x - 7 )

<em>New Equation {Changed by Conversion} :</em>
y = 3x - 23

From here we can really just spot which number is </span>m and that number is 3.

If you want to know how that image is graphed, I attached an image to the answer.

<em>So, the slope of the equation y + 2 = 3 ( x - 7 ) is</em>  3.

Hope this helps!


- Lindsey Frazier ♥

4 0
4 years ago
Read 2 more answers
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