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3 years ago

HELP WITH THIS QUESTION, PLEASE!!

Mathematics

1 answer:

Arisa [49]3 years ago

4 0

Answer:

74°

Step-by-step explanation:

The given congruence relations mean ...

3x -7 = 6x -88

81 = 3x . . . . . . . add 88-3x

(3x -7)° = (81 -7)° = 74°

The measure of angle XMZ is 74°.

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The dot plot shows the number of hours Stan worked each week for the last 3 months. What fraction of the total number of weeks d

Bond [772]

Answer:

1/3

Step-by-step explanation:

7 0

2 years ago

Type the correct answer for each.

xxTIMURxx [149]

If point $\left(x,\ \frac{\sqrt{7}}{3}\right)$ is on the unit ircle, then:

$x^2+\left( \frac{ \sqrt{7} }{3} \right)^2=1 \\ \\ \Rightarrow x^2+ \frac{7}{9} =1 \\ \\ \Rightarrow x^2=1- \frac{7}{9} = \frac{2}{9} \\ \\ \Rightarrow x= \sqrt{ \frac{2}{9} } = \frac{ \sqrt{2} }{3}$

Since, the point is in the second quadrant, x is negative.

Thus, $(x,\ y)=\left(x,\ \frac{\sqrt{7}}{3}\right)=\left(-\frac{ \sqrt{2} }{3},\ \frac{\sqrt{7}}{3}\right)$

Part A:

$3 \sqrt{7} =6\left( \frac{ \sqrt{7} }{2} \right) \\ \\ =6\left( \frac{ \sqrt{7} }{3} \cdot \frac{3}{ \sqrt{2} } \right) \\ \\ =6\left( \frac{ \frac{ \sqrt{7} }{3} }{ \frac{ \sqrt{2} }{3} } \right)=-6\left( \frac{ \frac{ \sqrt{7} }{3} }{ -\frac{ \sqrt{2} }{3} } \right) \\ \\ =-6\left( \frac{y}{x} \right)=-6\tan\theta$

Therefore, $-6\tan\theta=3\sqrt{7}$ .

Part B:

$- \frac{ \sqrt{7} }{2} =- \frac{ \sqrt{7} }{3} \cdot \frac{3}{ \sqrt{2} } \\ \\ =- \frac{ \frac{ \sqrt{7} }{3} }{ \frac{ \sqrt{2} }{3} } = \frac{ \frac{ \sqrt{7} }{3} }{ -\frac{ \sqrt{2} }{3} } = \frac{y}{x} \\ \\ =\tan\theta$

Therefore, $\tan\theta=- \frac{ \sqrt{7} }{2}$

8 0

3 years ago

What is 15/8 written in a mixed number? Sorry I'm just bad at math :/

Valentin [98]

The mixed number is 1 and 7/8 because 15 minus 8 equals 7/8 and since you went over the whole (8/8) it is 1 plus 7/8 which equals 1 and 7/8.

It's okay that you might not be good in math that's why we will help.

Lol i sound like a whole teacher

3 0

3 years ago

Combine like terms to simplify the following expressions -5a - 4a + b

Sauron [17]

Answer:

-9a + b

Step-by-step explanation:

For this problem, let us factor out the variable a from the terms containing the variable, and apply addition and the distributive property to simplify the terms.

-5a - 4a + b

= a ( -5 + -4 ) + b

= a ( -9 ) + b

= -9a + b

Hence, the simplified expression for -5a - 4a + b is -9a + b.

Cheers.

7 0

3 years ago

Read 2 more answers

15 is 30% of what number?

Kisachek [45]

0.5 times 100 = 50... 50 is your answer