Answer:
She can read 120 pages
Step-by-step explanation:
We can use ratios to solve
20 pages x pages
--------------- = -----------
1/2 hour 3 hours
Using cross products
20 *3 = 1/2 x
Multiply by 2
20*3*2 = 1/2 *2 *x
120 = x
She can read 120 pages
Answer:
FORMULA FOR SURFACE AREA OF SPHERE = 4 pi r^2
r = 6 " area = 4 pi X 6 X 6 = 144 pi " squared
r = 12 "
area = 4 X pi X 12 X 12 = 576 pi" squared
ANSWER Area will be 4 times the original
Step-by-step explanation:
The average atomic mass is 6.92X
How do we compute the average atomic mass?
In a bid to calculate the average atomic mass, we multiply the fraction of each isotope by the mass number , then add them together.
This is more like weighted average, as shown below:
average atomic mass=(mass number of first isotope*fraction)+(mass number of second isotope*fraction)
average atomic mass=(6X*7.59%)+(7X*92.41%)
average atomic mass= 6.92X
Find out more about average atomic mass on:brainly.com/question/13299770
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Answer:
I dont understand what im answering?
Step-by-step explanation: