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SSSSS [86.1K]
3 years ago
14

The measures of two angles are 4 x ° and ( 2 x + 12 ) ° . What must be true if x = 13 ?

Mathematics
1 answer:
Dovator [93]3 years ago
7 0

Answer:

4x degrees= 52 degrees

(2x+12) degrees= 38 degrees

Step-by-step explanation:

4(13)=52

(2(13)+12)=38

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A.) A new cell phone costs $625. Its sale price is $500. What’s the percent of decrease?
Andrej [43]

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175$

Step-by-step explanation:

8 0
3 years ago
What are all of the different possible outcomes when two 4-sided dice are rolled?​
Vinvika [58]

Step-by-step explanation:

first of all I don't think a 4 sided dice is even possible

but anyways

1 1

1 2 2 2

1 3 2 3

1 4 2 4

3 3 3 4

4 4

8 0
3 years ago
3. Given the same sample statistics, which level of confidence would produce
Irina-Kira [14]

Answer:

99%, because as the level of confidence​ increases, Zc increases.

Step-by-step explanation:

7 0
3 years ago
A company makes rubber rafts. 12% of them develop cracks within the first month of operation. 27 new rafts are randomly sampled
rewona [7]

The probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

The true proportion, p for the population is given to 0.12.

Thus, the mean, μ, for the sample = np = 27*0.12 = 3.24.

The sample size, n, given to us is 27.

Thus, the standard deviation, s, for the sample can be calculated using the formula, s = √{p(1 - p)}/n.

s = √{0.12(1 - 0.12)}/27 = √0.003911 = 0.0625389.

We are asked to calculate the probability that the number of tested rafts that develop cracks is no more than 3, that is, we need to calculate P(X ≤3).

P(X ≤ 3)

= P(Z ≤ {(3 - 3.24)/0.0625389) {Using the formula z = (x - μ)/s}

= P(Z ≤ -3.8376114706)

= .00006 {From table}.

Thus, the probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

Learn more about sampling distributions at

brainly.com/question/15507495

#SPJ4

8 0
1 year ago
A patient was supposed to take 560 mg of medicine but only tool 420 mg.What percent of the medicine did the patient take?
Stolb23 [73]
75% I think.

because if you do 560 - 420 you get 140.

140 / 560 x 100 = 25

which means there is a 25% decrease, so they took 75%.
7 0
3 years ago
Read 2 more answers
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