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3 years ago

X-125=600 as a word situation

1 answer:

8 0

A bird dives down 125 feet and ends up at an altitude of 600 feet. What was the altitude the altitude before bird started diving ?

Our store donated 35 papers cups to your class every time you had a party. If at the end of school year we gave you a total of 525 cups, how many parties your class had?

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Is having a multiplication sign outside the parentheses the same as not?

katrin2010 [14]

I believe it's the same

8 0

4 years ago

Read 2 more answers

In 12 weeks for Lyft and $4500 during yardwork he earn the same amount each week M stand for the amount earned each week how muc

sergeinik [125]

Answer:

M=375

Step-by-step explanation:

7 0

3 years ago

"Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article describes a study of 51 young

Paul [167]

Answer:

The 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums is (0.24, 0.506).

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:

$n = 51, \pi = \frac{19}{51} = 0.373$

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 lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.373 - 1.96\sqrt{\frac{0.373*0.627}{51}} = 0.24$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.373 + 1.96\sqrt{\frac{0.373*0.627}{51}} = 0.506$

The 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums is (0.24, 0.506).

3 0

3 years ago

Please help.. tysvm if you do :D

Rama09 [41]

I think it’s c I’m not sure please comment if it’s right so people won’t get it wrong!

3 0

3 years ago

Clara estimates that the length of a hiking trail is 5.75 km. She later learns that its actual length is 6.25 km. What is the pe

antoniya [11.8K]

8.0% is the answer. To solve these problems just do actual length minus her guess which gives you 0.5. Then divide what you got by the actual length. 0.5 divided by 6.25 is 0.08. Multiply that by 100. 0.08 x 100 is 8 which means the answer is 8.0% :)

5 0

3 years ago