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nasty-shy [4]
4 years ago
14

I don’t understand this problem can someone explain it and give the answe

Mathematics
1 answer:
Feliz [49]4 years ago
6 0
Answer:

Explanation:

4x + 2x = 180 degree
6x = 180
x = 180/6
x = 30

Therefore, x = 30 degree
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4 cards are chosen at random from a deck of 52 cards without replacement. what's the probability of choosing a ten, a nine, an e
Dmitry_Shevchenko [17]

Answer:

12%

Step-by-step explanation:

im not sure so sorry if wrong

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3 years ago
Help!!! 10 PTS!!
Masja [62]
Two points of intersection are on the number at the coordinates (-1,2) and (4,-8).

5 0
3 years ago
John's checkbook had a balance of $432.05 on June 10th On June 12th he wrote a check
Anna71 [15]

Answer:

John's currenct account balance after the deposit is $357.43.

Step-by-step explanation:

Current balance: $432.05

-$123.87

Current balance: $308.18

-$250.75

Current balance: $57.43

+$300.00

Current balance: $357.43

6 0
3 years ago
A study done by researchers at a university concluded that 70 70​% of all student athletes in this country have been subjected t
Alecsey [184]

Answer:

The margin of error is 0.0206 = 2.06 percentage points.

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

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 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 = 1900, \pi = 0.7

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The margin of error is:

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

M = 1.96\sqrt{\frac{0.7*0.3}{1900}} = 0.0206

The margin of error is 0.0206 = 2.06 percentage points.

The lower limit of this interval is:

\pi - M = 0.7 - 0.0206 = 0.6794

The upper limit of this interval is:

\pi + M = 0.7 + 0.0206 = 0.7206

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

6 0
4 years ago
Write two verbal expressions for 2d
Lera25 [3.4K]
<span>.  2 verbal expression of 2d
 Verbal expressions in mathematics is the translation of the given mathematical equation or numbers into words. For example the verbal expression of operations are:
+ = addition
- = subtraction
/ - division
x = multiplication

In the given number of 2d, these are the two verbal expression:
2d => 2 times d; or 2 multiply by d
2d => the product of 2 and d
Verbal expression are the words translation of mathematical equations.

</span>



5 0
3 years ago
Read 2 more answers
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