Answer:
31.5 hours studying English
Step-by-step explanation:
2 math hours = 3 english hours
21 math hours = ? english hours
21/2 = 10.5
10.5 * 3 = 31.5
Answer:
Option A - 
Step-by-step explanation:
We have given the expression 
We have to find the value of the expression ?
Solution :
Step 1 - Write the expression

Step 2 - Applying symbol rule i.e. multiplication of positive into negative is always negative, 

Step 3 - Solve

Therefore, The value of the expression is 
So, Option A is correct.
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Answer:
This is incorrect, the correct answer is 7/12
Step-by-step explanation:
Here's my interpretation of your equation:
P=175e^(-0.090*25) (not P=175e^-0.090times 25 )
Then P = 175(0.105) = 18.4, or approx 18.