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babymother [125]
3 years ago
11

Need help badly geometry question

Mathematics
2 answers:
labwork [276]3 years ago
7 0

Answer:

Step-by-step explanation:

sin 67 = x/21

x = 21 sin 67

answer is A

Irina-Kira [14]3 years ago
5 0
Answer: A


STEP BY STEP:
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What is 79% as a faction in simplest form
emmainna [20.7K]
79/100 is the same thing as 79%
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3 years ago
Give two coterminal angles (one positive and one negative) and the reference angle -4 pi/5
kherson [118]

The coterminal angle for the -4π/5  are -14π/5 , 6π/5 and reference angle is π/5 respectively.

<h3>What is coterminal angles?</h3>

Two different angles that have the identical starting and ending edges termed coterminal angles however, since one angle measured clockwise and the other determined counterclockwise, the angles' terminal sides have completed distinct entire rotations.

We have an angle:

-4π/5

To find the coterminal angle, add and subtract by 2π in the angle -4π/5

Coterminal angle:

= -4π/5 - 2π

= -14π/5

= -4π/5 + 2π

= 6π/5

Reference angle:

= π - 4π/5  (as the angle lies in the second quadrant)

= π/5

Thus, the coterminal angle for the -4π/5  are -14π/5 , 6π/5 and reference angle is π/5 respectively.

Learn more about the coterminal angles here:

brainly.com/question/23093580

#SPJ1

6 0
2 years ago
A. Angle Q corresponds to angle Y
Aleksandr [31]

Answer:

B: XZ corresponds to QR

Hope this helps

7 0
3 years ago
Read 2 more answers
Which graph represents a function with direct variation?
Elza [17]

Answer: **The anwser is b because it represents a function with a direct variation because of the negative 2**

Step-by-step explanation:

3 0
3 years ago
According to a study conducted by an​ organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A rando
Nimfa-mama [501]

Answer: No, this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

Step-by-step explanation:

Since we have given that

n = 1400

x = 154

So, \hat{p}=\dfrac{154}{1400}=0.11

and p = 0.10

So, hypothesis would be

H_0:\hat{p}=p\\\\H_a:\hat{p}>p

So, the test statistic value would be

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.11-0.10}{\sqrt{\dfrac{0.1\times 0.9}{1400}}}\\\\z=\dfrac{0.01}{0.008}\\\\z=1.25

At 5% level of significance,

critical value would be 1.96.

Since 1.96>1.25.

so, we will accept the null hypothesis.

Hence, no, this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

3 0
3 years ago
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