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pogonyaev
3 years ago
14

Find the product -7(-a2)(-b3)

Mathematics
1 answer:
vlada-n [284]3 years ago
7 0
-7(-a^2)(-b^3)=\boxed{-7a^2b^3}
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If 3x+54+(65 × 32)+ 902- (43/12) =y, then what is y?
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Answer:

We cannot solve without a value for x. The simplified form is 3x+\frac{36,389}{12} =y

Step-by-step explanation:

If the equation is 3x+54+(65)(32)+902-\frac{43}{12}=y then we cannot solve it until we know the value of x. We can simplify it using order of operations such as PEMDAS.

3x+54+(65)(32)+902-\frac{43}{12}=y \\3x+54+2,080+902-\frac{43}{12}=y \\3x+3,036-\frac{43}{12}=y \\3x+\frac{36,432}{12} -\frac{43}{12} =y\\3x+\frac{36,389}{12} =y

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Explain the rules for multiplication and division to convert units. How do you know when to multiply and when to divide to conve
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Well, units divide and multiply just like numbers. That's why Area is in units of  distance squared (cm × cm = cm²) and volume is cubic distance (m × m × m = m³).

Likewise other mathematical operations can be performed on them, including division where they can cancel out of the equation.

For instance, a rate, speed, slope or conversion factor is usually one unit divided by another unit. Like so...

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If you are given a distance traveled, let's say 100 meters and asked to solve for time it takes to get there. You would divide by the speed so that meters cancel leaving only time.

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Hope this helps!

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