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ivann1987 [24]
3 years ago
12

Iris has a family photograph with a width of 8 in and height of 10 in. She wants to enlarg the photograph so that it's width is

12 in. What will the height of the enlarged photograph be?
Mathematics
2 answers:
aleksklad [387]3 years ago
8 0
The correct answer is 15 in because  \frac{8}{12}= \frac{10}{x}. Hope I helped well. :) 
andrezito [222]3 years ago
7 0

Answer:

The enlarge height is 15 in .

Step-by-step explanation:

Let us assume that the width be w .

Let us assume that the height be h .

(As width and height of the photograph are proportional.)

w \propto h

w = kh

Where k is the constant of proportionality .

As given

Iris has a family photograph with a width of 8 in and height of 10 in.

Here w = 8 in , h = 10 in

Put in the equation w = kh .

8 = 10k

k = \frac{8}{10}

She wants to enlarge the photograph so that it's width is 12 in.

Let us assume that the enlarge height be x .

Here w = 12 in , h = x

Put in the equation w = kh .

12 = kx

k = \frac{12}{x}

Compare the value of k .

\frac{8}{10} = \frac{12}{x}

x= \frac{12\times 10}{8}

x= \frac{120}{8}

x = 15 in

Therefore the enlarge height is 15 in .

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