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4 years ago

Can someone explain how I'm supposed to determine whether each pair of ratios form a proportion?

Mathematics

2 answers:

Mnenie [13.5K]4 years ago

5 0

If you graph it and it lunes with zero its proportional

Marrrta [24]4 years ago

4 0

Answer: you cross muliply and they shold be the equal. or you can simplfy and if the samfractions

Step-by-step explanation:

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Graph a line with a slope of 2/5 that contains the point(-2,4)

fomenos

Answer:

(-2, 4) (3, 6)

Step-by-step explanation:

I think this would be correct? haha

y2-y1/x2-x1

6-4=2,3--2(or 3+2 because 2 negatives make a positive)=5, so 2/5.

I hope this helps :)

7 0

3 years ago

Ashley is making $500 a week at her job . She receives a 20 percent pay raise. A year later she takes a 5 percent cut. How much

MaRussiya [10]

Answer:

$570

Step-by-step explanation:

500 * 1.2 = $600 after 20% pay raise

600 * .95 = $570 after 5% pay cut

8 0

4 years ago

Read 2 more answers

Write the equation of the circle that has a center of (-7, 17) with a radius of V19.

kipiarov [429]

I think your question seems to be :-

Write the equation of the circle that has a center of (-7, 17) with a radius of √19

So , as we know that the equation of circle with centre at (h,k) and radius r is given by ${\bf{(x-h)^{2}+(y-k)^{2}=r^{2}}}$ . Now , using same concept in this question ;

${:\implies \quad \sf \{x-(-7)\}^{2}+(y-17)^{2}=(\sqrt{19})^{2}}$

${:\implies \quad \bf \therefore \quad \underline{\underline{(x+7)^{2}+(y-17)^{2}=19}}}$

This is the required equation of Circle 

8 0

2 years ago

y varies directly as x, y=14 when x=18. Determine x when y=31. Estimate your answer to two places after the decimal, if necessar

laiz [17]

Y : x
14 : 18
31 : x
18*31/14=x
39.85714286

ANSWER
x=39.86

8 0

3 years ago

Under her cell phone plan, Autumn pays a flat cost of $48 per month and $5 per gigabyte. She wants to keep her bill at $68.50 pe

VikaD [51]

Answer:

4 gigabytes

Step-by-step explanation:

Equation: 68.50=48+5x

8 0

3 years ago

Read 2 more answers