Let me set an example to help solve this, say the poster is 100 inches by 90 inches. the length of the poster is reduced by 12% so subtract 12 from 100 to get you new length of 78 inches. the width is increased by 15% so multiply 90 by 15% to get 13.5 inches and add the to the 90 inches you have to get your new width of 103.5 inches. multiply them together to get your new area then divide the new area by the old area, subtract that number by 1 and multiply it by -1.

3 0

2 years ago

How many American adults must be interviewed to estimate the proportion of all American adults who actively try to avoid drinkin

iogann1982 [59]

Answer:

a) n = 6765

b) n = 9604

c) n = 16590

Step-by-step explanation:

8 0

2 years ago

tina practiced piano for 15 hours last month and 45 hours this month. using addition to write a statement comparing the hours ti

Kipish [7]

She practiced piano for 60 hours

3 0

3 years ago