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3 years ago

Make for me number 21 thx

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

8 0

Method One

You could divide by 5 right away.

20/5 = - 3 + x

4 = - 3 + x Add 3 to both sides.

4 + 3 = x

x = 7

Method Two.

You could remove the brackets. This is slightly longer, but some questions can only be solved that way.

20 = 5(-3) + 5x

20 = -15 + 5x Add 15 to both sides

20 + 15 = 5x

35 = 5x Divide by 5

35/5 = x

7 = x

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Answer:

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3 years ago

What is the domain of the function Y equals cube root x

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2 years ago

What is the slope of the given slide?

alexdok [17]

Use Pythagoras theorem:
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2 years ago

Read 2 more answers

A region is bounded by y=e−3x, the x-axis, the y-axis and the line x = 3. If the region is the base of a solid such that each cr

grigory [225]

Answer:

0.333 $\pi$ units³

Step-by-step explanation:

Think process:

The equation is given as y = $e^{-3x}$

Let, y = f (x)

Therefore, $f (x) = e^{-3x}$

We know that the limits are y-axis and x= 3

Y-axis: x= 0

then limits are given as x= 0 and x = 3

Integrating gives:

$\int\limits^3_0 {e^{-3x} } \, dx$ = $\frac{-1}{3}e^{-3x}$ + C

calculating from x= 0 to x = 3, we know volume is given by $\pi \int\limits^a_b {f(x)} \, dx$

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3 years ago

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bazaltina [42]

Answer:

$0.45833.....$ OR $\frac{11}{24}$

Step-by-step explanation:

The common denominator is 24.

You get: $\frac{15}{24}$ and $\frac{4}{24}$

Subtracting you get: $\frac{11}{24}$

<em>Hope this helps!!</em>

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3 years ago