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3 years ago

Determine the input that would give an output value of 2/3

Mathematics

1 answer:

Sati [7]3 years ago

5 0

<h3>Answer: 19</h3>

==========================================

Explanation:

The steps you have so far are correct. You just need to multiply both sides by -3

Doing so will clear out the fractions and you'll be left with 19 = x, which is the same as x = 19

Let's check that answer:

$y = -\frac{1}{3}x + 7\\\\y = -\frac{1}{3}*19 + 7\\\\y = \frac{-19}{3} + 7*\frac{3}{3}\\\\y = \frac{-19}{3} + \frac{21}{3}\\\\y = \frac{-19+21}{3}\\\\y = \frac{2}{3}\\\\$

So the answer is confirmed.

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Help pls 52 is 65% of what? 45% of 40 is what number?

Masja [62]

Let, that number = x

It would be: x * 0.65 = 52

x = 52 / 0.65

x = 80

So, that number and your answer is 80

18 is 45% of 40

45%/100 = 0.45

0.45*40=18

6 0

4 years ago

Help plz! Evaluate the following definite integral:<img src="https://tex.z-dn.net/?f=%5Cint%5Climits%5Ea_%7B-a%7D%20%7B%28a%5E%7

s344n2d4d5 [400]

Just use the power rule:

$\displaystyle\int_{t=-a}^{t=a}(a^2-t^2)\,\mathrm dt=a^2t-\dfrac13t^3\bigg|_{t=-a}^{t=a}$

We also could have use the fact that the integrand is even to write

$\displaystyle\int_{t=-a}^{t=a}(a^2-t^2)\,\mathrm dt=2\int_{t=0}^{t=a}(a^2-t^2)\,\mathrm dt=2\left(a^2t-\dfrac13t^3\bigg|_{t=0}^{t=a}\right)$

I'll continue with this expression since it's easier to evaluate (if only a little):

$2a^3-\dfrac23a^3=\dfrac43a^3$

7 0

3 years ago

Please help I will give out Brainliest!!! I REALLY NEED IT!

Akimi4 [234]

Answer:

$k = 36 \: \: degrees$

$m = 54 \: \: degrees$

$n = 144 \: \: degrees$

Step-by-step explanation:

$k = 36(vertically \: \: \: \\ opposite \: \: \: angles)$

$90 + m + 36 = 180 \\ 126 + m = 180 \\ m = 180 - 126 \\ m = 54 \: \: degrees$

$90 + m = n \\ 90 + 54 = n \\ 144 \: \: degrees = n$

hope this helps

brainliest appreciated

good luck! have a nice day!

6 0

3 years ago

Read 2 more answers

Find the 85th term of the arithmetic sequence - 25, 37, 49, ...

e-lub [12.9K]

Answer:

The 85 term of the arithmetic sequence would be 983

Step-by-step explanation:

Use the formula: an=a1+(n−1)d

an=a1+d(n-1)

a85= -25+(85-1)12

a85= -25+1008

a85=983

4 0

3 years ago

Read 2 more answers

Please trigometry help fast please please

daser333 [38]

Answer:

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I hope it help you dear

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3 years ago