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defon
3 years ago
10

Can someone Please help me on this easy math problem

Mathematics
1 answer:
allsm [11]3 years ago
6 0

Step-by-step explanation:

Equation of a straight line

y = mx + c, m is the slope, and c the intercept

points (3,7) x = 3, y = 7, c = 1

7 = m × 3 + 1

7 = 3m + 1

3m = 7 - 1

3m = 6

m = 6/3

m = 2

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2. (15 points) Shelly has a photo that is 7 1/3 inches tall. She wants to shrink it down to fit in a picture frame that is only
Inessa [10]

A. Which reduction should she use so the picture fills as much of the frame as possible, without being too large?

Find the scale factor to get rom 7 1/3 inches to 5 1/3 inches:

5 1/3  / 7 1/3 = 0.7272

Now rewrite the fraction as decimals:

2/3 = 0.667

¾ = 0.75

5/9 = 0.555

The closest scale that would still fit the frame would be 2/3 because it is under 0.727.

B. How much extra space is there in the frame when she uses the reduction from Part A?

Multiply the original size by the scale factor to use:

7 1/3 x 2/3 = 4 8/9

Now subtract the scaled size from the original size:

7 1/3 – 4 8/9 = 2 4/9 inches extra

C. If she had a machine that could reduce by any amount, so that she could make the reduced picture fit in the frame exactly, what fraction would the reduction be?

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0.72 = 72/99 which reduces to 8/11

5 0
3 years ago
What is 1/4b=-3 in linear equations
Nutka1998 [239]
1/4b=-3 

Solve for b

1/4b *4 = -3*4
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b = -12

Answer: b = -12
3 0
3 years ago
5/6k+2/3=4/3 <br> What is K? <br> I don't understand how to do these
Drupady [299]
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8 0
3 years ago
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mixer [17]

Answer:

$9

Step-by-step explanation:

These are given:

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5 0
3 years ago
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What do you say when you see an empty parrot cage?
irina1246 [14]
Oh no my parrot is missing
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3 years ago
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