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zlopas [31]
3 years ago
5

If you help me answer this question i will give you brainiest!!

Mathematics
1 answer:
babymother [125]3 years ago
5 0

We have c=3.7 cm, B=97 degrees, area Δ=22.4 sq cm, and we'll call A the vertex opposite a and C the vertex opposite c=3.7 as usual.

Δ = (1/2)  ac sin B

a = 2Δ / (c sin B)

Now we have a Law of Cosines situation for b

b² = a² + c² - 2 a c cos B

We could substitute for a general solution but let's just plug in the numbers,

a = 2(22.4) / (3.7 sin 97) = 12.199

b = √(a² + c² - 2 a c cos B)

b = √(12.199² + 3.7² - 2 (12.199)(3.7) cos 97) = √173.507 = 13.17

Answer: 13.2 cm

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What is the length of the arc with a measure of 200° in a circle of radius of 31 inches
Tresset [83]

Answer:

107.94 inches

Step-by-step explanation:

Circumference = 2 pi r = 6.28 *31 = 194.28

1% arc = 3.6 = 1.9428

55.56% of 360=200.016

55.56% of 194.28 =107.94

You can try using this guide to apply to arc segments

The radius is 31inch if it was a prime factor of 360 then you could use the equation arc = radius / no of segments

Ifthe circle had 30 inch radius then 360/30 = 12

Then divide by the 200/30 = 6.66

The circumference then would be similar 114.44inch

3 0
3 years ago
Joe read 140 pages of his 300 page book. What percent of the book has he read?
Umnica [9.8K]
46% 140 divided by 300 gets your anwser
7 0
3 years ago
Read 2 more answers
ASAP please Bob ate 4/5 of a pizza, and Annie ate another 1/7 of it. What fraction of the pizza is left?
NikAS [45]

Answer:

2/35 of the pizza is left

Step-by-step explanation:

To subtract fractions, find the LCD and then combine.

subtract 4/5 from 5/5 then get 1/5 and sub 1/7 from that

3 0
3 years ago
The probability of winning on an arcade game is 0. 659. if you play the arcade game 30 times, what is the probability of winning
mrs_skeptik [129]

The probability of winning exactly 21 times is:-0.32

Given,

The probability of winning on an arcade game, p = 0.659

Number of times you play arcade game, n = 30

By assuming this as a normal distribution, we get

Mean=μ=30×0.659 =19.77

Standard deviation, σ = \sqrt{np(1-p)}

= \sqrt{30(0.659)(1-0.659)}

≈ 2.60

Let X be a binomial variable

Then, the z score for x = 21 will be:

z = (x - μ) / σ = \frac{21-19.77}{2.60}

≈ 0.47

Now, the probability of winning exactly 21 times

P (x ≥ z) = P (21 ≥ 0.47) = 0.32

Hence the probability of winning exactly 21 times is 0.32

Learn more about probability here:-brainly.com/question/13067945

#SPJ4

                         

5 0
2 years ago
Sara's high school played 14 football games this year. The team won most of their games. they were defeated during 3 games. how
Morgarella [4.7K]
They won 11 games is the answer
3 0
4 years ago
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