It is the third and fourth one only
Answer:
23
Step-by-step explanation:
6×3+5(3-2)
6×3+5×1
18+5
23
Answer:
16.5
Step-by-step explanation:
Just put in the values of C and y first into the expression.
C = 4x + 5y
Put in values.
51 = 4x + 5(-3)
Evaluate.
51 = 4x + (-15)
Swap positions.
4x + (-15) = 51
Shift (-15) to the other side and change to (+15).
4x = 51 + 15
= 66
Find x.
x = 66 ÷ 4
x = 16.5
Answer:
C
Step-by-step explanation:
A P E X
Answer:
The number is <em><u>4 .</u></em>
Step-by-step explanation:
Given:
When 12 is subtracted from the square of a number, the result is 4 times the number.
Now, to find the solution:
Let the number be .
So, according to question when 12 is subtracted from the square of a number, the result is 4 times the number:
<em>Adding both sides by 12 we get:</em>
<em>Using square root on both sides we get:</em>
Therefore, the number is 4.