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Veronika [31]
3 years ago
8

Solve the system by substitution. x = 9y x-5y=20

Mathematics
1 answer:
storchak [24]3 years ago
4 0

Step-by-step explanation:

hope this helps you! have a great day

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Need to find the direction angle for each vector. #10 and #12 please!
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Answer:

10)  - 45 degrees

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Step-by-step explanation:

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Find the x and y components that define the vector that joins C with D:

x-component: -4 - (-8) = - 4 + 8 = 4

y-component:  4 - 8 = -4

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{-4}{4}  = -1\\\theta = -45^o

12)

Find the x and y components that define the vector that joins A with B:

x-component: 7 - 4 = 3

y-component:  - 1 - (-1) = -1 + 1 = 0

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{0}{3}  = 0\\\theta = 0^o

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stiv31 [10]

Answer:

i aint never seen 2 pretty best friends always one of them gotta be ugly....

Step-by-step explanation:

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3 years ago
Which value of c will make the equation true?
sweet-ann [11.9K]

Answer:

A

Step-by-step explanation:

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Ayo help me please I give u 10 points
slavikrds [6]

Answer:

A and D

Step-by-step explanation:

Moving the line left would be moving it onto the y - axis

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