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3 years ago

What division statements have a quotient of 20

Mathematics

1 answer:

Jlenok [28]3 years ago

5 0

Answer:

In the example, 20 is the dividend, five is the divisor, and four is the quotient. Unlike the other basic operations, when dividing natural numbers there is sometimes a remainder that will not go evenly into the dividend; for example, 10 ÷ 3 leaves a remainder of one, as 10 is not a multiple of three.

Step-by-step explanation:

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Mr. Daten gave his class a 20-point quiz. The results of that quiz are shown below.

mixer [17]

To evaluate the data set shown we need to rearrange the sets from smallest to the largest
5,7,10,10,12,12,12,13,15,17,18,18,18,19,20,20
thus the:
first quarter, Q1 will be:
(10+7)/2
17/2
=8.5

second, Median
(13+15)/2
=28/2
=14

Third quarter, Q3:
(19+20)/2
=39/2
=19.5

Thus you can use the values obtained to mark the number line.

6 0

3 years ago

Find the perimeter.

Lorico [155]

Answer:

12x+9

Step-by-step explanation:

We may find the perimeter of a shape by adding all of it's side lengths.

We can start by adding 2 sides together.

(5x+2)+(3x+8)=8x+10

Because we don't know the value of x, we can only add together the amount of times that it is multiplied.

Now we add the final side.

(8x+10)+(4x-1)=12x+9

Hope this helps friend.

4 0

3 years ago

Read 2 more answers

the sum of three numbers is 60. the second number is two more than the first. the third number is two more than the second. find

Mamont248 [21]

Hello from MrBillDoesMath!

Answer:

The three numbers are 18, 20, and 22

Discussion:

Let the first number be called "x". The the Question states that

x + (x+2) + ( x+2 +2) = 60 => combine like terms

3x + ( 2 + 2 +2) = 60 => simplify

3x + 6 = 60 => subtract 6 form both sides

3x = 60 - 6 = 54 => divide both sides by 3

x = 54/3 = 18

So the numbers are 18, 20, and 22

Thank you,

MrB

6 0

4 years ago

Read 2 more answers

Help me pls <br> Find the value of x.

BartSMP [9]

Answer:

Step-by-step explanation:

The bottom angle is a completely straight line, and that means the angle is 180 degrees.

180 - 81 = 99

So, this means 3x = 99. We need to isolate the variable, so we have to divide everything by 3.

x = 33

8 0

3 years ago

Read 2 more answers

in a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the res

Rudik [331]

Answer:

$7-1.796\frac{2.216}{\sqrt{12}}=5.851$

$7+1.796\frac{2.216}{\sqrt{12}}=8.149$

So on this case the 90% confidence interval would be given by (5.851;8.149)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

Data: 7 8 2 10 6 5 7 8 8 9 5 9

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=7$

The sample deviation calculated $s=2.216$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=12-1=11$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,11)".And we see that $t_{\alpha/2}=1.796$

Now we have everything in order to replace into formula (1):

$7-1.796\frac{2.216}{\sqrt{12}}=5.851$

$7+1.796\frac{2.216}{\sqrt{12}}=8.149$

So on this case the 90% confidence interval would be given by (5.851;8.149)

3 0

3 years ago