3a - 6a + 2 = 8a + 20 - 5a
pls help!!! step by step!! URGENT!
2 answers:
Answer:
a = -3
Step-by-step explanation:
3a−6a+2=8a+20−5a ( original equation)
Step 1: Simplify both sides of the equation.
3a−6a+2=8a+20−5a
3a+−6a+2=8a+20+−5a
(3a+−6a)+(2)=(8a+−5a)+(20)(Combine Like Terms)
−3a+2=3a+20
−3a+2=3a+20
Step 2: Subtract 3a from both sides.
−3a+2−3a=3a+20−3a
−6a+2=20
Step 3: Subtract 2 from both sides.
−6a+2−2=20−2
−6a=18
Step 4: Divide both sides by -6.
−6a/−6 = 18/-6
a=−3
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Answer:
9
Step-by-step explanation:
x - 3y
Let x =3 and y =-2
3 -3(-2)
3 +6
9
The error is in the first step. It should be (+8 plus or minus the square root of the quantity eight squared minus four times one times seven ). This is because "b" is -8 so -b is -(-8) = +8
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Total = 500 * (1 + .06/12) ^ 12 * 4
Total = 500 * (1.005) ^ 48
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Total =635.24
The side is 3 so it would be 3 times 5, your answer is 15
