Answer:
x=3
y=5
Step-by-step explanation:
3x+2y=19
- 2x+2y=16
_____________
x=3
3(3)=9
19-9=10
10÷2=5
y=5
Answer:
135
Step-by-step explanation:
Length = 9
Width = 3
Height = 5
V=whl
V = 3*5*9
V = 135
Answer:
Just like combining like terms with the same variables, you combine like
radicals with the same number under the radical signs.
Step-by-step explanation:
Example:
3x + 2x
= 5x {combined like terms}
3√2 + 2√2
= 5√2 {combined like radicals}
Answer:
-7
Step-by-step explanation:
8x - 2 = 7x - 9
8x - 2 - 7x = 7x - 9 - 7x
x - 2 = -9
x - 2 + 2 = -9 + 2
x = -7
<em><u>Answer:</u></em>
<h2>
5.1 X 10^-7</h2>
<u><em>Reason:</em></u>
It is to the -7 because you would have to move the decimal left (-) 7 times to get the original 0.00000051.
Hope this helps! ;)