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lubasha [3.4K]
4 years ago
5

How to solve for a b and c ​

Mathematics
2 answers:
Nataly [62]4 years ago
5 0
So B is 140 because D is 140, A and C are 40 because 140+140=280. 360-280=80 Divided by 2 equals 40
andrew-mc [135]4 years ago
4 0

Answer:

a=40. b=140. c= 40

Step-by-step explanation:

b is congruent To 140 because of the vertical angles postulate that states two angles vertical from one another are congruent.

a is 40 because it is Supplementary to b Which means that the sum of a and b must add up to 180.

c is Congruent to a due to the vertical angles postulate

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A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. Using
sattari [20]

Answer:

b. 0.6592 and 0.7044

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. This means that n = 1100, p = \frac{750}{1100} = 0.6818

90% confidence interval

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 - 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.6592

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 + 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.7044

So the correct answer is:

b. 0.6592 and 0.7044

7 0
3 years ago
Read 2 more answers
Please help find measure
AleksandrR [38]

Answer:

180- 148 = 32 (the measure of the angle thats supplementary to the exterior

180 - 56 -32 =92 (180 is the interior triangle angle sum, subtract the known angles to discover the unknown angle.

angle h = 92 degrees

Step-by-step explanation:

I hope this helped :)

5 0
3 years ago
Help? I've been struggling with this for 20 mins
Basile [38]
(3/8)d=12 is the starting equation. You need to separate d from the rest of the numbers by dividing both side by (3/8) or multiplying both sides by the reciprocal of (3/8) which is (8/3).
Then multiply 12(8/3) which is 32.

(3/8)d=12
d=12(8/3)
d=32
Alyssa's dog weighs 32 pounds
7 0
3 years ago
Please I need help it’s an emergency
aev [14]

Answer:

A. Cos θ = 16/42

Step-by-step explanation:

The angle the ladder makes with the floor = θ

Hypotenuse = length of the ladder = 42 m

Adjacent = Distance from the bottom of the ladder to the wall = 16 m

Therefore to find θ, we would apply the trigonometric function, CAH:

Cos θ = adj/hyp

Which is:

Cos θ = 16/42

8 0
3 years ago
The surface area of a swimming pool is 373 square feet. What is it’s surface area in square meters?
jeka57 [31]

The surface area of swimming pool is 373 square feet .

In this question, we have to convert square feet to square meters, that is

1 feet = 0.3048 meter

Squaring both sides ,

1 feet^2 = 0.3048^2 meter^2

1 feet ^2 = 0.09290304 meter^2

And

373 feet^2 = 373* 0.09290304 meter^2

373 feet^2= 34.653meter^2

6 0
3 years ago
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