The answer is <span>He subtracted 10 from the right side instead of adding 10 to the right side
Let's solve it:
</span><span>2x + y = 5
x − 2y = 10
________
Rearrange first equation to get y:
y = 5 - 2x
________
Substitute y into the second equation:
x - 2(5 - 2x) = 10
________
Multiply the terms:
x - 10 + 4x = 10
________
Combine the terms:
5x - 10 = 10
________
Add 10 on the both sides of the equation:
5x = 10 + 10
5x = 20
x = 4</span>
First, calculate 40% of 90
90 x (40/100 ) = 90 x 0.4 = 36
A. 72 NO
B. 36 YES
C. 4/5 x 9 = 36/5 NO
D. 40/100 / 90 = 1/225 NO
E. 2/5 x 90 = 36 YES
Answers:
B and E
Let x = his wage before his raise.
x + .25x = 343.75
1.25x = 343.75
x = $ 275.00 Was his wage before his raise
The answer is D cuz it cross the x
This is an easy one.
65/5= 13.
Therefore, she descended 13 feet per minute.
