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zvonat [6]
3 years ago
11

Simplify the expression: 7(–3 + r) =

Mathematics
2 answers:
VikaD [51]3 years ago
5 0
-21+7r
You would just distribute the 7
hammer [34]3 years ago
3 0

Answer:

-21 + 7r

Step-by-step explanation: Please brainliest?

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What is the total volume of the solid?
matrenka [14]

Answer:3028

Step-by-step explanation:

3 0
3 years ago
An electric utility company determines the monthly bill for a residential customer by adding an energy charge of 6.34 cents per
kirill [66]

Answer:

y = 18.38 + 0.0634x

Step-by-step explanation:

Given,

Monthly base charge = $18.38,

Also, the cost of each kilowatt-hours = 6.34 cents = $ 0.0634

( 1 cents = 0.01 dollars ),

So, the cost of x kilowatt-hours = 0.0634x,

If y represents the total monthly charge ( in dollars ) for x kilowatt-hours,

Thus, the total monthly charge for x kilowatt-hours = base charge + cost of x kilowatt-hours,

⇒ y = 18.38 + 0.0634x

Which is the required equation.

8 0
3 years ago
What is the formula of gradient
Nostrana [21]

Answer:

m= rise/run = y2-y1/x2-x1

8 0
3 years ago
Read 2 more answers
On a survey eight students reported how many minutes it takes them to travel to school here are there responses 9, 11, 3, 14, 14
Triss [41]

Hi!

The answer to your question is 9.75 minutes

Here is the math to prove it:

9+11+3+14+14+7+14+6=78

Now you will take 78 and divide it by 8

This is because when finding the mean you add all of the given number together and then divide them by the amount of number added together.

78/8=9.75

Thus, your answer is 9.75 minutes

I hope this helped!

Have a wonderful day/night!

God bless!

8 0
2 years ago
Sandy is working with a carpenter to frame a house. They are using 8-foot-long boards, but each board must be cut to be 7 feet i
Tju [1.3M]

Answer:

5/4in

Step-by-step explanation:

The initial length:

1 ft = 12 in

8 ft = 8 * 12 in    

= 96 in

The final length:

7 ft 10 3/4 in = 7 ft + 10 in + 3/4 in

                     = 7 * 12 in + 10 in + 3/4 in                    

                     = 84 in + 10 in + 3/4 in        

                     = 94 in + 3/4 in

The final length:

96 in - 94 in - 3/4 in = 2 in - 3/4 in = 8/4 in - 3/4 in = 5/4 in

8 0
3 years ago
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