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3 years ago

-9x = 72 PLEASE HELP GIVING 21 POINTS PLEASE

Mathematics

2 answers:

Bad White [126]3 years ago

3 0

Answer:

X = -8

Step-by-step explanation:

Lilit [14]3 years ago

3 0

Answer:

-8

Step-by-step explanation:

divide the -9 by the 72 and you get X= -8

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sergejj [24]

Answer:

Step-by-step explanation:

∡5 = 42°

find: ∡ 14

solution:

since ∡5 = ∡13 = 42°

∡14 = 180 - ∡13

= 180 - 42

= 138°

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grandymaker [24]

4 consecutive integers...
x, x + 1, x + 2, x + 3

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3 years ago

Point m is the midpoint of kL. M(1,-1) and L(8,-7. What are the coordinates of point k?

Phoenix [80]

Answer: (-6, 5)

<u>Step-by-step explanation:</u>

Use the Midpoint Formula: $\dfrac{(x_k, y_k)+(x_L,y_L)}{2}=(x_m, y_m)$

Separate the x's and y's and solve them individually:

$\dfrac{x_k+x_L}{2}=x_m\qquad \qquad \qquad \qquad\dfrac{y_k+y_L}{2}=y_m\\\\\\\dfrac{x_k+8}{2}=1\qquad \qquad \qquad \qquad \qquad \dfrac{y_k-7}{2}=-1\\\\\\x_k+8=2\qquad \qquad \qquad \qquad \qquad y_k-7=-2\\\\\\x_k\quad =-6 \qquad \qquad \qquad \qquad \qquad y_k\qquad =5$

So, the k-coordinate is (-6, 5)

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3 years ago