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Natasha_Volkova [10]

2 years ago

9

Someone please help me with the unanswered questions

2 answers:

Alex787 [66]2 years ago

7 0

Answer:

3) 87.9 or 1) 12.5

Step-by-step explanation:

they did multiply then subtract

e-lub [12.9K]2 years ago

5 0

Answer:

x equals: 15

Step-by-step explanation:

7x= 5x + 30

-5 -5

2x= 30 (divide by 2 on both sides)

x=15

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matrenka [14]

The mean is the average. You calculate it by adding all the numbers up in the data set and divide by how many numbers there are in the data set.

So:

$\sf Mean=\dfrac{70+68+72+66+68+69+66+71+74+66}{10}\rightarrow\dfrac{690}{10}\rightarrow\boxed{\sf 69}$

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3 years ago

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If you wanna be Dora then please help me!

IRINA_888 [86]

Answer:

I think tge answer would be 24 I am not for sure

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3 years ago

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A survey asked a group of students to choose their favorite type of pet. The results of the survey are shown in the table.

Yuliya22 [10]

Answer:is A

Step-by-step explanation: because if we add all of those numbers together we get 49vthen divided by 6 gives us 8.16

3 0

3 years ago

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Use the Law of Sines to find the missing angle of the triangle.

Natasha2012 [34]

Answer:

m∠B = 70.0° (nearest tenth)

Step-by-step explanation:

<u>Sine Rule for Angles</u>

$\sf \dfrac{\sin A}{a}=\dfrac{\sin B}{b}=\dfrac{\sin C}{c}$

(where A, B and C are the angles and a, b and c are the sides opposite the angles)

Given:

a = 13
c = 19
A = 40°

Substituting the given values into the formula to find m∠C:

$\implies \sf \dfrac{\sin 40^{\circ}}{13}=\dfrac{\sin C}{19}$

$\implies \sf \sin C=\dfrac{19\sin 40^{\circ}}{13}$

$\implies \sf C=\sin^{-1}\left(\dfrac{19\sin 40^{\circ}}{13}\right)$

$\implies \sf m \angle C=69.96086904^{\circ}$

Interior angles of a triangle sum to 180°

$\implies \sf m \angle A+ m \angle B+m \angle C=180^{\circ}$

$\implies \sf 40^{\circ} + m \angle B+69.960...^{\circ}=180^{\circ}$

$\implies \sf m \angle B=70.03913...^{\circ}$

Therefore, m∠B = 70.0° (nearest tenth)

8 0

2 years ago

What is an equation of the line that passes through the points (5, 2) and (-5, 6)?

olga nikolaevna [1]

Answer:

In the pic

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)

6 0

2 years ago