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AlekseyPX
3 years ago
8

Evaluate the expression

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

Answer:

900

Step-by-step explanation:

You would substitute n for 3 so it would be 60x3=180 then multiply that by 2 = 360. Then take the 180 and multiply that by -3 to get -540. Finally do 360 - (-540) into a calculator to get 900.

Hope this helps

Please mark me as Brainliest

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NEED HELP WITH 13 a-b!!!! PLEASE HELP!!!!!!!
sergij07 [2.7K]

Answer:

a - 6%

b - $7.50

Step-by-step explanation:

The answer for a

the only items that had sales tax were $3.00 and $0.50. The total tax for the both was $0.21 so you can find what percent 0.21 is of 3.00 + 0.50 o 3.50. Do this by dividing the percent you are looking for, 0.21, by what it is the percent of 3.50. 0.21 / 3.50 = 0.06. then you multiply the number you got, in this case 0.06 by 100 to find the percentage so it is 6%

The answer for b

Here you can just take the subtotal, $13.00, and subtract all the other prices and you will be left with the price of the top. 13.00 - 3.00 - 2.00 - 0.50 = 7.50. So the answer is $7.50

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2 years ago
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Assoli18 [71]

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-2 - 8 is -10

6 0
2 years ago
Each number in a group of natural numbers was divided by the sum of all the numbers in that same group. What is the sum of all t
schepotkina [342]

Answer:

1

Step-by-step explanation:

Let us consider the case of 3 numbers: x, y, and z.  

Then  x/x+y+z + y/x+y+z + z/x+y+z = x+y+z/x+y+z = 1

The same works also for any quantity of numbers.

5 0
2 years ago
13. Write the equation of a horizontal line that passes through the point (3, -3).
Step2247 [10]

Answer:

O y = -3

Step-by-step explanation:

The line is horizontal.

x = -3 and x = 3 are vertical lines, so they are incorrect.

The line passes through (3, -3).

                                         (x ,  y)

Put y as -3.

y = 3

(-3) = 3

Line y = 3 is incorrect.

(-3) = -3

Line y = -3 is correct.

3 0
3 years ago
Read 2 more answers
What’s #1?????? Plz help
liq [111]

Answer:

C) 400\pi

Step-by-step explanation:

The formula for area is

A=pi * radius ^2

If the diameter is 40, the radius is 20

Therefore

A=\pi 20^{2} \\A=\pi 400

7 0
2 years ago
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