Answer:
Call the numbers a, b, c, d. What does it say if their mean is 15? That would be that added together then divided by 4 you get 15. So the number before you divided by 4, which is the sum, was 60. If you know some algebra, the equation (a+b+c+d)/4=15 gives the sum of 60 when you multiply both sides
Answer:
Give me a second I know this one.
Step-by-step explanation:
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Answer:121.824 and 779.174
Step-by-step explanation:
just times the numbers by each other and you will get the answer
Answer:
See explanation.
Step-by-step explanation:
I'm assuming your question is to simplify the given expression. I will work that problem and also I will solve for x just in case that's your question instead.
Step 1: Simplify inside parenthesis
7x + 3 - x = 6x + 3
Step 2: Multiply simplified expression by number outside parenthesis
2 * (6x+3) = 2*6x + 2*3
12x + 6
Simplification is done after this step.
Step 3 (unnecessary if the problem is to simplify the expression): Solve
12x + 6 = 0
12x = -6
x = -1/2
Since there was no term given on the other side of the equal sign, I assumed that term was zero.