10. Peyton wants to get an A in her Chemistry class this semester. Her first 4 tests were a 94.
1 answer:
Answer:
She needs to get 94 in the fifth test.
Step-by-step explanation:
Peyton wants to get an A in her Chemistry class this semester. Her first 4 tests were 94, 83, 88, and 91.
She has to get an average mark of 90 and to do that let us assume, she has to get x in the fifth test.
So, mathematically
⇒ 356 + x = 90 × 5
⇒ 356 + x = 450
⇒ x = 94
Therefore, she needs to get 94 in the fifth test. (Answer)
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Answer:
As shown in picture, we have
Hope this helps!
:)
Explanation:
Let say right triangle ABC has A = 90 deg.
=> BC is hypotenuse.
=> BC = AC x BC/AC = AC/(AC/BC) =AC/cosC.
That's the way we've done!