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3 years ago

Can you please help I'm stuck on this problem and I keep on getting it wrong

Mathematics

2 answers:

Lorico [155]3 years ago

7 0

Check the picture below.

lidiya [134]3 years ago

6 0

Answer:

68°

Step-by-step explanation:

Since WX and ZY are parallel, angle W and angle Z should add up to 180°

W + Z = 180°

112° + Z = 180°

Z = 68°

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Nady [450]

Answer: x > 5

Step-by-step explanation: You need to isolate x. First, distribute the 1/2 into the parentheses. You will get:

4x + x + 2 > 12

Combine like terms.

5x + 2 > 12

Subtract 2 from each side.

5x > 10

Divide by 5 on each side.

X > 2

Since x is by itself, that is the answer.

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4 years ago

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4 years ago

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3 years ago

Find the value of "a" such that the slope between the point (-4, 5) and (3, a) is 2/3.

timurjin [86]

$A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\the\ slope:m=\dfrac{y_B-y_A}{x_B-x_A}$

$(-4;\ 5);\ (3;\ a);\ m=\dfrac{2}{3}\\\\subtitute:\\\\\dfrac{a-5}{3-(-4)}=\dfrac{2}{3}\\\\\dfrac{a-5}{7}=\dfrac{2}{3}\ \ \ \ \ |cross\ multiply\\\\3(a-5)=7\cdot2\\\\3a-15=14\ \ \\ |add\ 15\ to\ both\ sides\\\\3a=29\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{a=\frac{29}{3}}$

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4 years ago

Find the length of side BC. Give your answer to 3 significant figures. C A 71° B

Vikki [24]

Answer:

BC ≈ 19.4 cm

Step-by-step explanation:

using the cosine ratio in the right triangle

cos71° = $\frac{adjacent}{hypotenuse}$ = $\frac{AB}{BC}$ = $\frac{6.3}{BC}$ ( multiply both sides by BC )