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3 years ago

For the equation x-3y=12, what is x when y=8?

Mathematics

2 answers:

zepelin [54]3 years ago

8 0

Answer:

lam not sure but l think x is 36

Maurinko [17]3 years ago

3 0

Answer:

x = 36

Step-by-step explanation:

x - 3y = 12

substitute y for 8

x - 3 * 8 = 12

x - 24 = 12

x = 12 + 24

x = 36

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The distance from the origin to the point(-15,20)

Anastasy [175]

Answer:

25 units.

Step-by-step explanation:

The origin is (0,0)

There using distance formula.

$\sqrt{(y2 - y1) { }^{2} + (x2 - x1) {}^{2} }$

$\sqrt{0 - ( - 15) {}^{2} + (0 - 20) {}^{2} }$

$\sqrt{15 {}^{2} + 20 {}^{2} }$

$\sqrt{625}$

Answer is 25 units.

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3 years ago

Twenty-one is 25% of what number? A. 5.25 B. 84 C. 10.5 D. 63

musickatia [10]

Answer: 84

Step-by-step explanation:

When substituting this question into an algebraic equation you can write it as:

21=.25x

(x clearly represents the number you are trying to find)

When you divide both sides by .25 to isolate x you get x=84

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2 years ago

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The ratio 50:60 in simplest form

Taya2010 [7]

Answer:

Divide both 50 and 60 by 10

6 0

4 years ago

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HELP me with These questions

Feliz [49]

Answer: 13.96 in²

Step-by-step explanation:

radius (r)

d = 2r

16 = 2r

8 = r

angle in radians (θ)

$\frac{180}{\pi} =\frac{25}{\theta}$

180(θ) = 25(π)

θ = $\frac{25}{180}\pi$

θ = $\frac{5}{36}\pi$

Area (A)

A = $\frac{1}{2}$ r² θ

= $\frac{1}{2}(8)^{2}(\frac{5}{36}\pi)$

= $\frac{40}{9}\pi$

= 13.96

*************************************************************************

Answer: 12π

Step-by-step explanation:

s = rθ

= 60 $(\frac{\pi }{5})$

= 12π

*************************************************************************

Answer: 22.440 cm²

Step-by-step explanation:

A = $\frac{1}{2}$ r²θ

= $\frac{1}{2}$ (10)² $(\frac{\pi} {7})$

= $\frac{50}{7}\pi$

= 22.440

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Answer: 270°, 630°, -450°, -810°

Step-by-step explanation:

positive: -90 + 360 = 270

270 + 360 = 630

negative: -90 - 360 = -450

-450 - 360 = -810

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Answer: $\frac{3\pi} {4}$

Step-by-step explanation:

$\frac{19\pi} {4} - 2\pi$

= $\frac{19\pi} {4} - \frac{8\pi} {4}$

= $\frac{11\pi} {4}$

$\frac{11\pi}{4} - 2\pi$

= $\frac{11\pi} {4} - \frac{8\pi} {4}$

= $\frac{3\pi} {4}$

If you subtract another 2π, you will end up with a negative value. The question asks for the smallest positive value.

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4 years ago

Jennie says the experimental probability that a 7th grade student reads at least 100 pages per week is 16/125. What is her error

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Answer:

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3 years ago

For the equation x-3y=12, what is x when y=8?​

For the equation x-3y=12, what is x when y=8?