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Vika [28.1K]
3 years ago
7

It takes Mr. Williams 1/5 hour to grade each of his students' tests. How many test can he grade is 4 hours?

Mathematics
1 answer:
Kryger [21]3 years ago
3 0

Answer:

The Answer is 1/20

Step-by-step explanation:

this is the answer because you have to divide 1/5 divided by 4 and it = 1/20 there you and maybe even give brainlyest

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#12-10: Factor this expression by dividing by the GCF first. 4h+24
AleksAgata [21]

\huge{\boxed{4(h+6)}}

Let's start by writing out their factors.

4: <em><u>1</u></em><em>, </em><em><u>2</u></em><em>, </em><em><u>4</u></em>

24: <em><u>1</u></em><em>, </em><em><u>2</u></em><em>, 3, </em><em><u>4</u></em><em>, 6, 8, 12, 24</em>

The greatest factor that 4 and 24 have in common is 4.

Factor out 4 from both terms. \boxed{4(h+6)}

6 0
3 years ago
12 = 3 (g - 1)<br> Options are:<br> 5<br> 3<br> -5<br> -3
grin007 [14]
The answer would be -3 because you distribute
6 0
3 years ago
Read 2 more answers
30b^3+20b^2+15b +10 please show work
Eddi Din [679]
30b³ + 20b² + 15b + 10 = ...(:5)
6b³ + 4b² + 3b + 2 = 
6b³ + 3b + 4b² + 2 = 
3b(2b²+1) + 2(2b²+1) = 
(2b²+1)*(3b+2)
5 0
3 years ago
As part of his semester project, a BYU-Idaho Introductory Statistics student calculates a 95% confidence interval for the true p
lyudmila [28]

Answer:

a. There's a 95% chance that the true proportion is in the confidence interval.

Step-by-step explanation:

When we want to estimate a property of a population (a population's parameter), without surveying the population, we use samples.

Then, with the information of the samples we can calculate the statistics and infere properties about a population. This inferences obviously came with some uncertainty, depending on the properties of the sample and specially the sample size.

When we talk about confidence intervals, we use the statistic of the sample (in this case, the mean) to estimate a range of values it is expected to find the true mean of the population. The width of this interval depends on the sample standard deviation and the sample size.

The value of the confidence interval (95%, 99%, etc) represent the probabilty that the true mean is within this interval.

3 0
4 years ago
A farmer finds there is a linear relationship between the number of bean stalks, n, she plants and the yield, y, each plant prod
Archy [21]

Answer:

y = -\frac{1}{3}m + 41

Step-by-step explanation:

Linear equation:

A linear function has the following format:

y = mn + b

In which m is the slope and b is the y-intercept.

When she plants 30 stalks, each plant yields 31 oz of beans. When she plants 36 stalks, each plant produces 29 oz of beans.

This means that these two points belong to the line: (30,31), (36,29).

Finding the slope:

When we have two points, the slope is given by the change in the output divided by the change in the input.

Change in the output: 29 - 31 = -2

Change in the input: 36 - 30 = 6

Slope:

m = \frac{-2}{6} = -\frac{1}{3}

Thus

y = -\frac{1}{3}m + b

Finding b:

We take one of the points and replace on the equation.

(30,31) means that m = 30, y = 31. Thus

y = -\frac{1}{3}m + b

31 = -\frac{1}{3}(30) + b

31 = -10 + b

b = 41

Thus

y = -\frac{1}{3}m + 41

3 0
3 years ago
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