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seraphim [82]
2 years ago
6

Determine which equation below can be solved to find the value of ∠A.

Mathematics
1 answer:
tia_tia [17]2 years ago
4 0

Answer:

Step-by-step explanation:

<A = 180 - (63+90)

<A = 180 - 63 - 90

<A = 180 - (63+45+<B )

<A = 180 -63 -45 -<B

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If i have 38 assignments and i do 15 of them what percentage do i have done?
netineya [11]

Answer:

39.473%

Step-by-step explanation:

It is actually fairly simple to get the answer to this. What you can do to find any percentage, is to take the amount done, or whatever it is in the scenario, and divide it by the total. It is like turning it into a fraction, which you can do as well. Turn this into a fraction, and then convert it. 15/38, 15 divided by 38 = 39.473.

Hope this helped ^-^

4 0
2 years ago
Read 2 more answers
What is the interquartile range of the following data set?3,8,14,19,22,29,33,37,43,49
Vaselesa [24]
Q1: 14
Q3: 37
Interquartile: 37-14 = 23

THE ANSWER IS 23

(Brainliest please?)
4 0
3 years ago
A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 335335 babies were​ born
strojnjashka [21]

Answer:

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

Step-by-step explanation:

Confidence Interval for the proportion:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 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:

n = 335, \pi = \frac{268}{335} = 0.8

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.7437

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.8563

For the percentage:

Multiplying the proportions by 100.

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

7 0
3 years ago
Which expression is equivalent to 3x + 6y
Sedbober [7]

option a as 3 is outside of bracket it will be multiplied by what is in bracket sot the answer will equivalent to question

7 0
2 years ago
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Can someone help please?
ratelena [41]

Answer: It is TRUE. A point in a linear equation can be the solution to said equation.

4 0
2 years ago
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