3 years ago

If y=-7when x=-21,what is the value of x when y=9

Mathematics

1 answer:

Bond [772]3 years ago

5 0

Answer:

Step-by-step explanation:

-21/-7 =3 so x is 3y. if you plug 9 in for y you get 3(9) then you multiply and get 27.

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If ^dec=^bec,wich is true by cpctc

lesya692 [45]

Answer:

BE is congruent to ED

Step-by-step explanation:

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3 years ago

Identify the slope and y-intercept of the function y = 4x - 9. O A. The slope is -9. The yintercept is (0,4). B. The slope is 4.

RUDIKE [14]

Answer:

Step-by-step explanation:

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3 years ago

If Z, Y, and A are the midpoints of triangle VWX, what is true about AY and XV

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3 years ago

The sum of two numbers is 167. The second number is 29 less than three times the first number. Fine the numbers. The two require

Anettt [7]

Answer:

49 and 118

Step-by-step explanation:

Let the two numbers be x and y

x+y = 167

y = 3x-29

Substitute into the first equation

x+ 3x-29 = 167

Combine like terms

4x - 29 = 167

add 29 to each side

4x = 167+29

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Divide by 4

4x/4 = 196/4

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x+y = 167

49+y = 167

y = 167-49

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4 0

3 years ago

Read 2 more answers

Evaluate the line integral, where C is the given curve. C sin(x) dx + cos(y) dy, where C consists of the top half of the circle

kenny6666 [7]

Parameterize the circular part of $C$ (call it $C_1$ ) by

$x=4\cos t$

$y=4\sin t$

wih $0\le t\le\pi$ , and the linear part (call it $C_2$ ) by

$x=-4-t$

$y=4t$

with $0\le t\le1$ .

Then

$\displaystyle\int_C\sin x\,\mathrm dx+\cos y\,\mathrm dy=\left\{\int_{C_1}+\int_{C_2}\right\}\sin x\,\mathrm dx+\cos y\,\mathrm dy$

$=\displaystyle\int_0^\pi(-4\sin t\sin(4\cos t)+4\cos t\cos(4\sin t))\,\mathrm dt+\int_0^1(-\sin(-4-t)+\cos4t)\,\mathrm dt$

$=0+\displaystyle\int_0^1(\sin(t+4)+\cos4t)\,\mathrm dt$

$=\cos4-\cos5+\dfrac{\sin4}4$

7 0

3 years ago