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Citrus2011 [14]

3 years ago

15

What is the value of a+b?

1 answer:

MissTica3 years ago

6 0

Answer:

125

Step-by-step explanation:

$a = \frac{1}{2} \times 90 \degree \\ \\ a = 45 \degree \\ \\ b =\frac{1}{2} (360\degree - 200\degree) \\ \\ b = 80\degree \\ \\ a + b = 45 + 80 \\ \\ a + b = 125 \degree$

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(please!!!) What fraction is equivalent to 38%?

Aleks04 [339]

Answer: 19/50

Step-by-step explanation: To write a percent as a fraction in lowest terms, first remember that a percent is a ratio that compares a number to 100. In this case, 38% can be written as the ratio 38 to 100 or 38/100. Notice however that 38/100 is not in lowest terms so we need to divide the numerator and denominator by the greatest common factor of 38 and 100 which is 2.

38 ÷ 2 = 19

100 ÷ 2 = 50

<em>Therefore, 38% can be written as the fraction 19/50 which is in lowest terms.</em>

8 0

2 years ago

Read 2 more answers

Find the largest side of △STU, given that m∠T=98°, m∠S=30°, and m∠U=52°.<br><br> geometry work

Sav [38]

<h3>Answer: SU</h3>

=======================================================

Explanation

Rule: The longest side of any triangle is always opposite the largest angle.

Angle T = 98 is the largest angle, so the longest side is SU since it is opposite angle T.

Refer to the diagram below.

4 0

2 years ago

A runner's journal shows the number of miles run each day for a week:

Brilliant_brown [7]

15 miles.
The runner adds two miles every day, so if they continue that pattern, they will run 15 miles on Saturday (13+2)

4 0

1 year ago

5/k = 15/20 what would the k be?

mash [69]

Answer:

20/3

Step-by-step explanation:

5/k=15/20

5/k=3/4

5 x 4/3 = k

k=20/3

3 0

3 years ago

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers. According

ryzh [129]

Answer: A. 14.02 to 15.98

Step-by-step explanation:

Let $\mu$ denotes the mean waiting time for population.

Given : Sample size : n= 64

Sample mean : $\overline{x}=15$ (minutes)

Population standard deviation = $\sigma= 4$

Confidence level : 95%

By z-table , the critical values for 95% confidence = z*=1.96

Confidence interval for population mean : $\overline{x}\pm z^* \dfrac{\sigma}{\sqrt{n}}$

The 95% confidence interval for the population mean of waiting times will be :

$15\pm (1.96)\dfrac{4}{\sqrt{64}}$

$15\pm (1.96)\dfrac{4}{8}$

$15\pm (1.96)(0.5)$

$15\pm 0.98$

$(15-0.98,\ 15+0.98)=(14.02,\ 15.98)$

Hence, the 5% confidence interval for the population mean of waiting times is <u>14.02</u> to <u>15.98.</u>

Thus , the correct answer is Option A.

5 0

2 years ago