Answer:
8.75 hours
Step-by-step explanation:
We can use ratios to solve. Put the pages over the time and set them equal.
4 pages 7 pages
------------- = ---------------
5 hours x hours
Using cross products
4 * x = 5 *7
4x =35
Divide by 4 on each side
4x/4 = 35/4
x =8.75 hours
Answer:
91 cm to 2 s.f
Step-by-step explanation:
use Pythagoras = a^2 +b^2 = c^2
substitute: 24^2 + 88^2 = c^2
= 576 + 7744 = c^2
= 8320 =c^2
c = square root of 8320 = 91 to 2 s.f figures
13.7 is 100% I like to divide by 100 to get the 1%, then multiply by the percent i am trying to find, lets see if I'm right.
13.7/10 = .137
.137= 1/100
.137 x 160 = 21.92
Your answer is 21.92, 21.92 is 160%
Hope this helped!