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nikitadnepr [17]
3 years ago
13

If x+9.8=14.7, what is the value of 8(x-3.7)?

Mathematics
2 answers:
Verizon [17]3 years ago
7 0
X=4.9 And 8(4.9-3.7) therefore when we solve it we get answer as 9.6
sergiy2304 [10]3 years ago
3 0
First you need to know what X is. So you need to subtract.
14.7-9.8=4.9 is X
Now you put X in parenthesis.
(4.9-3.7)=1.2 now you multiply 8x 1.2=9.6 is your answer. Always start with PEMDAS and it stands for the order to do the math. Parenthesis, Exponents,
Multiplication,
Division,
Addition and Subtraction
Hope this helps:)
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Step-by-step explanation:

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\displaystyle B^\prime(t)=24.6\frac{d}{dt}[\sin(\frac{\pi t}{10})(8-t)]

Now, we will utilize the product rule. The product rule is:

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We will let:

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Then:

\displaystyle u^\prime=\frac{\pi}{10}\cos(\frac{\pi t}{10})\text{ and } \\ \\ v^\prime= -1

(The derivative of u was determined using the chain rule.)

Then it follows that:

\displaystyle \begin{aligned} B^\prime(t)&=24.6\frac{d}{dt}[\sin(\frac{\pi t}{10})(8-t)] \\ \\ &=24.6[(\frac{\pi}{10}\cos(\frac{\pi t}{10}))(8-t) - \sin(\frac{\pi t}{10})] \end{aligned}

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By simplification:

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So, the slope of the tangent line to the point (6, B(6)) is -28.17.

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