You need to do like this:

Plug the numbers into the formula:

because they said
<u>is </u>90 and
<u>of</u> what?
Multiply diagnally: 100 × 90 = 9000 ÷ 82 ≈
109.76
i don't really sure it was completly correct but hoped it helps:)
Answer:
The answer is 20
Step-by-step explanation:
Reasoning it is correct because for questions like this the bottom numbers for each shape are 10 and 8 they are very close to each other on the number line there fore since the number is two off you subtract 2 and then two again since it is 2 off to get 21 the closest answer is 20
It is a little confusing but since it is two places off you subtract two twice
I believe the answer to this is C. English.
The answer is 1, as the LCM of 6 and 10 is 30, we can change the 2 fractions into 45/30 - 15/30, and the answer should be 30/30 which is 1