X+3y=7
x-3y=1
add them together
x+3y=7
<u>x-3y=1 +
</u>2x+0y=8
2x=8
divide 2
x=4
subsitute
x+3y=7
4+3y=7
subtract 4
3y=3
divid 3
y=1
x=4
y=1
answer is A
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Answer:
The answer is 6
Step-by-step explanation:
ABC is 72, 66, 42 and DEF is 12, 11, 7
simply divide the largest shape measurements by the smaller one.
72÷12
66÷11
42÷7
you get 6 in all of them, this technique may not work all the time.
Answer:
$117,000
Step-by-step explanation:
-0% 2004
-7% 2005
-14% 2006
-21% 2007
-28% 2008
-35% 2009
180,000 x 0.35 (35%) = 63,000
180,000 - 63,000 = 117,000
$117,000
Answer:
20%
Step-by-step explanation:
6x5=30
20x5=100
(-2ab^3)(-3a^2b^5)<span>Simplifying
(-2ab3)(-3a2b5)
Remove parenthesis around (-2ab3)
-2ab3(-3a2b5)
Remove parenthesis around (-3a2b5)
-2ab3 * -3a2b5
Reorder the terms for easier multiplication:
-2 * -3ab3 * a2b5
Multiply -2 * -3
6ab3 * a2b5
Multiply ab3 * a2b5
6a3b<span>8</span></span>
