Given:
15 is decreased by three times a number, the result is 21.
To find:
The equation for the given statement and solve it.
Solution:
Let n be the unknown number. Then,
Three times of a number = 
15 is decreased by three times a number = 
It is given given that the result after subtraction is 21. So,
Divide both sides by -3.
Therefore, the required equation is and its solution is . Hence, the correct option is (a).
The answer of the question is 7/2
Calculations
(7/8) / (1/4)
Change to multiply by the reciprocal:
(7/8) * 4
The answer is:
7/2
Answer:
Width=13 Length=25
Step-by-step explanation:
The total perimeter of the field is 76 feet.
Lets say that is length is X and the width is Y.
The equation would be:
2Y+2(12+Y)=76
First solve for the parenthesis.
2Y+24+2Y=76
76-24=52
52=4y
y=13
To check your answer, 13 times 2 (26) plus 25 times 2 (50)= 76 so we know this is correct.
Answer:
b
Step-by-step explanation:
:)
Answer:
b
Step-by-step explanation:
