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erastova [34]
2 years ago
11

....................

Mathematics
1 answer:
jasenka [17]2 years ago
7 0

Answer:

m ∠ E = 29°

Step-by-step explanation:

34 + 117 + m = 180

151 + m = 180

-151         -151

m ∠ E = 29°

I hope this helps!

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In a random sample of 75 individuals, 52 people said they prefer coffee to tea. 99.7% of the population mean is between 84/80/74
Dmitriy789 [7]
Using a 1-sample z-interval for the population proportion with confidence level 0.997, the sample probability is 0.69 with margin of error of 0.16, so between 0.69+0.16=0.85 of the population and 0.69-0.16=0.53 of the population prefers coffee.  84% and 54% are the correct answers.
7 0
4 years ago
Read 2 more answers
Paul, Colin and Brian are waiters.
Kisachek [45]

Add the ratios together: 2 + 3 +4 = 9

Divide the total tips by 9:

77.40 / 9 = 8.60

Multiply each portion of the ratio by 8.60:

2 x 8.60 = 17.20

3 x 8.60 = 25.80

4 x 8.60  = 34.40

The ratios are in order of the people:

Paul got 17.20

Colin got 25.80

Brian got 34.40

Brian got 34.40 - 17.20 = 17.20 more than Paul

7 0
3 years ago
The average number of calories in a 1.5-ounce chocolate bar is 225. Suppose that the distribution of calories is approximately n
s344n2d4d5 [400]

Answer:

The probability that a randomly selected chocolate bar will have a. Between 200 and 220 calories will be 0.3023

Step-by-step explanation:

Given:

True mean=225

S.D=10

X1=200 and X2=220

To Find:

P(X1<x<X2)

Solution:

<em>BY using Z-table for probability and Z-score we can proceed.</em>

So

For 200 calories Z will be ,

Z=(sample mean -true mean)/S.D

=200-225/10

=-25/10

=-2.5

For 220 calories Z will be ,

Z=220-225/10

=-5/10

=-0.5

So required probability will be

P(-2.5

=P(-2.5

=P(0>z>2.5)-P(0>z>0.5)

=0.4938-0.1915

=0.3023

6 0
3 years ago
A gardening club has 21 members, of which 13 are males and the rest are females. What is the ratio of females to all
sammy [17]

Answer:

There are 8 Females out of the 21

5 0
3 years ago
Which expression results from using the Distributive Property? 2(5 + 3r)
Natasha_Volkova [10]

Answer:

6r + 10

Explanation:

2(5 + 3r)

= (2)(5 + 3r)

= (2)(5) + (2)(3r)

= 10 + 6r

= 6r + 10

5 0
3 years ago
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