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valentina_108 [34]
3 years ago
13

Can someone help me picture inserted

Mathematics
2 answers:
densk [106]3 years ago
7 0

Answer:

~77°

Step-by-step explanation:

cosQ = 9/40

inverse cosine(9/40) ≈ 77° = Q

zimovet [89]3 years ago
4 0
~77 is the answerrrrrrrrrrrrrrrr
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How to find coefficient of 3n- 24
stepan [7]
3n-24
_____
3     3

3 divided by 3= 3
24 divided by 3= 8 
n=8

Hope this helps you!
7 0
3 years ago
2,234,814x832,726,738,738
uysha [10]
1,860,989,372,256,732
8 0
4 years ago
In the figure below, lines L and M are parallel and line AB = line BC = line AC. What is the measure of the exterior angle
Kryger [21]

Answer:

120º

Step-by-step explanation:

angles of an equilateral triangle are equal so..

180 ÷ 3 = 60º

to get the exterior m⦣C

180 - interior m⦣C = exterior m⦣C

180º - 60º = 120º

6 0
3 years ago
A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
3 years ago
Plz can someone help me in am doing a unit test
patriot [66]

Answer:

n-31=52

substitute 83 from the variable in the equation.

other one not sure

7 0
3 years ago
Read 2 more answers
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