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Elena-2011 [213]
3 years ago
15

Math is garbage and it sucks please help before I smash my laptop with a brick

Mathematics
2 answers:
notka56 [123]3 years ago
6 0

Answer:

7x+66=122

Step-by-step explanation:

x+x+x+x+x+x+x+66=122

7x+66=122

7x=56

x=8

miss Akunina [59]3 years ago
5 0

Answer:

7x+66=122

Hope this helps =]

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A Gallup Poll in July 2015 found that 26% of the 675 coffee drinkers in the sample said they were addicted to coffee. Gallup ann
emmasim [6.3K]

Answer:

The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.

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}.

The margin of error is:

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

A confidence interval has two bounds, the lower and the upper

Lower bound:

\pi - M

Upper bound:

\pi + M

In this problem, we have that:

\pi = 0.26, M = 0.05

Lower bound:

\pi - M = 0.26 - 0.05 = 0.21

Upper bound:

\pi + M = 0.26 + 0.05 = 0.31

The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.

4 0
3 years ago
Oceanside Bike Rental Shop charges fourteen dollars plus seven dollars an
astra-53 [7]
The answer is 5 hours
5 0
3 years ago
Special right triangles 45-45-90 &amp; 30-60-90 formula!!<br> finding missing side lengths
nordsb [41]

The formula you need to know is that the side opposite of the 30° angle is always half the hypotheneus. For example in question 2 X should be 6 since 3 is opposite side of the angle 30°. In a 45 45 90 triangle, it is important to know that the straight sides are always the same length (since they are the same angle). For example in question 9, v is also 9√2.

When you have two sides, you can figure out the third side with a² + b² = c² since they are all right triangles. Good luck

4 0
2 years ago
The sum of a number times 7 and 21 is at least 29. Write as an inequality
PtichkaEL [24]

The inequality is 7x + 21 \leq 29

Step-by-step explanation:

<u>DATA:</u>

Let the number be x

Number times 7 = 7*x

Sum of a number times 7 and 21 = 7x + 21

Is at least 29

<u>INEQUALITY:</u>

7x + 21 \leq 29

<u>SOLVE:</u>

7x \leq 29-21

7x \leq 8

x \leq \frac{8}{7}

Therefore, the inequality is 7x + 21 \leq 29

Keyword: Inequality

Learn more about inequality at

  • brainly.com/question/1465430
  • brainly.com/question/1858613

#LearnwithBrainly

6 0
3 years ago
How do I solve 3 (9-5)² ÷8 ?
Harrizon [31]

Answer:

3(9-5)^2 ÷8

3(4)^2÷8

3(16)÷8

3(2)=6

8 0
3 years ago
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