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Keith_Richards [23]

2 years ago

15

A computer store buys a computer system at a cost of 357.60$. The selling price was first at 596$ , but then the store adverti

sed a 40% markdown on the system. Answer parts a and b.

1 answer:

timurjin [86]2 years ago

7 0

Answer:

i not know what you need me to help you

Step-by-step explanation:

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If 140 bricks are used to build a wall 20 feet high, how many bricks will you use to build a wall 30 feet high?

Leokris [45]

Answer:

210

Step-by-step explanation:

7 0

2 years ago

Solve this question and how to do it

satela [25.4K]

Answer:

Step-by-step explanation:

7/15 + 3/5

I'd multiply 3/5 by 3 so that both of the denominators (bottom number) are the same.

Now all we have to do is add the Numerators tog

7/15 + 9/15ether (the top number)

7/15 +9/15 = 16/15 or 1 1/15

6 0

2 years ago

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The ingredients for making chocolate cookies are 3/4 cup of brown sugar, 1/4 cup of white sugar, 3/2 cup of butter, 11/8 cup of

Naya [18.7K]

Answer:

$\frac{51}{8}$ cups.

Step-by-step explanation:

It is given that the ingredients for making chocolate cookies are $\frac{3}{4}$ cup of brown sugar, $\frac{1}{4}$ cup of white sugar, $\frac{3}{2}$ cup of butter, $\frac{11}{8}$ cup of flour, and $\frac{5}{2}$ cup of chocolate chips.

Now, we have to calculate the total number of cups of ingredients needed in making chocolate cookies.

So, it will be given by

$(\frac{3}{4} + \frac{1}{4} + \frac{3}{2} + \frac{11}{8} + \frac{5}{2})$ cups

= $\frac{3 \times 2 + 1 \times 2 + 3 \times 4 + 11 + 5 \times 4}{8}$ cups

= $\frac{51}{8}$ cups. (Answer)

3 0

3 years ago

6th Grade Math! Complete the function table and write the function rule. Please explain, since this is a written answer. Tysm!

ICE Princess25 [194]

Answer:

Its subtract 12.

Step-by-step explanation:

The first question mark is positive 6.

6-12= -6

The second question mark is -22.

Negative 10 minus 12 equals negative 22

Once you understand integers, it will be really easy. I was in 6th grade last year.

4 0

3 years ago

Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest t

vitfil [10]

Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

The number of observation is 4.

Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$

$\bar{X}=\frac{900+35+50+300}{4} =433.75$

The formula of variance is given below,

$\sigma^2=\frac{1}{n}\sum{(X-\bar{X})^2}$

$\sigma^2=\frac{398668.75}{4}$

$\sigma^2=99667.19$

The variance of the data is 99667.19

$\sigma=\sqrt{99667.19}$

$\sigma=315.7011$

The standard deviation of the data is 315.7011.

The other information or values of given chart is shown in the attached table.

8 0

2 years ago

Read 2 more answers