Question

Delisa is designing a website that will be viewable on both computers and mobile devices, so the website as it is seen on a mobile device is proportional to the website as it is seen on a computer. The diagonal of Delisa's computer monitor is 21 inches, and the diagonal of Delisa's tablet is 9.3 inches.

If an image is 22 centimeters wide on the website when it's displayed on Delisa's computer, how wide should the image be on the tablet? Round to the nearest tenth of a millimeter, if necessary.

Answer 1

THIS QUESTION IS MULTIPLE CHOICE SO I AM GOING TO LIST THE... wait sorry caps lock... im gonna list the options

Answer 2

97.4 millimeters
1 millimeter
496.8 millimeters
1,836 millimeters

Answer 3

thats a b c and d in correct order

Answer 4

First we should convert the inches to cm. There are 2.54 cm in one inch. So: 21*2.54 = 53.34 cm, and 9.3*2.54 = 23.62 cm.

Now set up a proportion:
\[\frac{diagonal length} {image width}\]. Note that both are in cm.

So now we set this up:
\[\[\frac{53.34}{22} = \frac{23.62}{x}\]

Solve for x. this will give you the image width in cm. Mutiply by 10 to get the answer in mm.

Hope that helps.

Answer 5

Thanks! I got it correct.

Answer 6

Great!

Answer 7

97.4 mm correct?

Answer 8

That was a great explanation, very helpful.

Answer 9

yes, correct.

Answer 10

@robotsrfun no problem!