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Luba_88 [7]
3 years ago
13

18 is 0.75% of what number?

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0
0.135 is your answer pretty sure. 
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leah would like to earn at least $160 per month. She works at a restaurant for $5 an hour and works at an ice cream shop for $8
Ne4ueva [31]

Answer:

Leah can make more than $160 in a month if he works 7 hours for $35 and 10 hours for $80 daily or weekly.

Step-by-step explanation:

7 0
3 years ago
A manager of a grocery store wants to determine if consumers are spending more than the national average of $150 with a standard
Semmy [17]

Answer:

A.) The manager calculated mean and not standard deviation

B.) Standard deviation should be calculated with the use of formula.

Step-by-step explanation:

A.) The assumption that his customers do spend more than the national average is wrong because the standard deviation is not calculated and mean cannot be used as a substitute for standard deviation.

B.) Standard deviation tells us how value obtain from group measurement deviates from the average value or expected value of each item of observations.

When standard deviation is low, this show that the value is very close to the expected value or the average value.

If the national average value = $150 and average customer spends $160. 

Deviation = 160 - 150 = 10

This is lower than $30

Or better still, the manager should make use of standard deviation formula. Which is the square root of variance.

8 0
3 years ago
According to the article "Fatigue Testing of Condoms" (Polymer Testing, 2009: 567–571), "tests currently used for condoms are su
daser333 [38]

Answer:

99% Confidence interval:  (1196,1973)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 20

Mean, μ = 1584

Standard Deviation, σ = 607

99% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.01} = \pm 2.86  

1584 \pm 2.86(\dfrac{607}{\sqrt{20}} )\\\\ = 1584 \pm 388.18\\ = (1195.82 ,1972.18)\\ \approx (1196,1973)

Thus, there is a 99% chance that it will break in approximately 1196 to 1972

6 0
2 years ago
A pyramid has a square base with side s. The height of the pyramid is 2/3 that of its side. What is the expression for the volum
Temka [501]

Answer:

The correct option is option D

Step-by-step explanation:

The volume of a pyramid is:

V=1/3(B)(H)

Where

B:Base = s^2

H:Height = 2/3s

Then:

V=1/3(B)(H) = 1/3(s^2)(2/3s) = 2/9s^3

The correct option is option D

8 0
3 years ago
Hi Iqra, when you submit this form, the owner will be able to see your name and email address.
Mamont248 [21]

Answer:

Violating Brainly policies

Step-by-step explanation:

I guess u R violating brainly policies by asking questions in the middle of a test

"Hi Iqra, when you submit this form, the owner will be able to see your name and email address."

anyways

7 0
3 years ago
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