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Oksanka [162]
3 years ago
9

I need help to get good grade

Mathematics
1 answer:
Vanyuwa [196]3 years ago
5 0

Answer:

scale factor: 3

Step-by-step explanation:

For this I will take both A and A' points. So A is (2,2) and A' is (6,6) and since the shape increased in size that means our scale factor must be greater than 1. So all that we have to do is know is how did we get from this x value to that x value or in other words 2 times what equals 6 and it's 3. Then we would do the same for the y value but since it would be the same 2 times what equals 6 and it's still 3 so 3 is the scale factor.

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Determine the length of chord BC. 1) 17.45 2) 30.96 3) 67.06 4) 33.53
boyakko [2]

Answer:

33.53

Step-by-step explanation:

OB is a radius of the circle, and OC is also a radius of the circle, so both are equal length.  That makes ΔOBC an isosceles triangle.

If we cut ΔOBC in half, the angle formed is 125° / 2 = 62.5°.

Therefore:

sin 62.5 = (x/2) / 18.9

x = 37.8 sin 62.5

x ≈ 33.53

5 0
3 years ago
10 points. Please don't give a answer that doesn't make sense.
katovenus [111]

Answer:

ok

Step-by-step explanation:

5 0
3 years ago
Hernando ate StartFraction 2 Over 8 EndFraction of a pizza for a dinner. He gave his 6 friends the rest of the pizza and told th
Sidana [21]

Answer:

Yes, because there were 8 pieces to start with. Hernando ate 2, leaving six pieces to split equally between his other six friends.

7 0
3 years ago
Please solve the following question.
insens350 [35]

The confidence interval for the difference p1 - p2 of the population proportion is (0.063, 0.329)

<h3>How to determine the confidence interval?</h3>

The given parameters are:

n₁ = 93; n₂ = 80

p₁ = 0.814;  p₂ = 0.618

The critical value at 95% confidence interval is

z = ±1.96

So, we have:

CI = (p_1 - p_2) \pm z * \sqrt{\frac{p_1(1  - p_1}{n_1} + \frac{p_2(1 - p_2)}{n_2}}

Substitute known values in the above equation

CI = (0.814 - 0.618) \pm 1.96 * \sqrt{\frac{0.814 * (1  - 0.814)}{93} + \frac{0.618 * (1 - 0.618)}{80}}

Evaluate

CI = 0.196 \pm 1.96 * \sqrt{0.001628 + 0.00295095}

This gives

CI = 0.196 ± 0.133

Expand

CI = (0.196 - 0.133, 0.196 + 0.133)

Evaluate

CI = (0.063, 0.329)

Hence, the confidence interval is (0.063, 0.329)

Read more about confidence interval at:

brainly.com/question/15712887

#SPJ1

7 0
2 years ago
I need help with college mathematics can someone help please ill give you the brainliest answer
arlik [135]

Answer:

3/16

Step-by-step explanation:

since the question has "and" we will be multiplying two unrelated probabilities

P(gray on 1) = 1/4

P(blue on 2) = 3/4

the second probability is not affected since we are not taking away the first space after we land on it

1/4 * 3/4 = 3/16

4 0
3 years ago
Read 2 more answers
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