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3 years ago

Which of the following statements must be true about this diagram? Checkall that apply.

Mathematics

1 answer:

kolezko [41]3 years ago

6 0

Answer:

A,B,C,F

Step-by-step explanation:

I've used the property of Triangles

I've also doubt on D

Hope it helps you...☺

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A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the

strojnjashka [21]

Answer:

95% of confidence interval for the Population

( 6.1386 , 6.8614)

Step-by-step explanation:

Step( i ):-

Given random sample size 'n' =85

Mean of the sample size x⁻ = 6.5 years

Standard deviation of Population = 1.7 years

Level of significance = 0.95 or 0.05

Step(ii):-

95% of confidence interval for the Population is determined by

$(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })$

$(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })$

( 6.5 - 0.3614 , 6.5 + 0.3614 )

( 6.1386 , 6.8614)

Conclusion:-

95% of confidence interval for the Population

( 6.1386 , 6.8614)

8 0

3 years ago

1. Determine the measure of the unknown angles indicated by letters. Justify your answers with

Maurinko [17]

Answer:

hello,

Step-by-step explanation:

In an isocele triangle, base's angles have the measure:

42+2a=180

2a=180-42

a=69(°)

in a triangle, an external angle has for measure the sum of the angles not adjacents.

55+b=132

b=77 (°)

in a quadrilater the sum of the (interior) angles is 2*180=360 degrees.

90+90+68+c=360

c=360-90-90-68

c=112 (°)

7 0

2 years ago

Simply: -2 1/3 - (-10 1/6)

iren [92.7K]

Answer: 7.83

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Which expressions are equivalent? Plz hurry will mark brainlest whoever gets it right

Tcecarenko [31]

Answer:

i think it a or b but i might be wrong

Step-by-step explanation:

sry if it is wrong tho

3 0

3 years ago

Read 2 more answers

What's the square root of 628

Galina-37 [17]

4rt33 or 4 times the square root of 33
4 = the square root of sixteen, so the square root of 16 times the square root of 33 = the square root of 628

8 0

2 years ago

Which of the following statements must be true about this diagram? Checkall that apply.​

Which of the following statements must be true about this diagram? Checkall that apply.