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Iteru [2.4K]
2 years ago
9

What are the solutions of the equation x^2+15=79?

Mathematics
1 answer:
Anastaziya [24]2 years ago
3 0
<h3>Answers:  x = 8 and x = -8</h3>

========================================================

Work Shown:

x^2 + 15 = 79

x^2 = 79-15

x^2 = 64

x = sqrt(64) or x = -sqrt(64)

x = 8 or x = -8

As the steps above show, we first subtract 15 from both sides. Then we apply the square root to get the two results. Don't forget about the plus minus.

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Answer:

I think jillian will have to run 10 miles

Step-by-step explanation:

2 miles = 100 calories

in order to burn 500 calories

2 miles = 100 calories burned

4 miles = 200 calories burned

6 miles = 300 calories burned

8 miles  = 400 calories burned

10 miles = 500 calories burned

7 0
3 years ago
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A store pays $399 for a waterheater. The store marks up the price by 42% . What is the amount of the mark-up?
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Answer:

Step-by-step explanation:

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399+167.50=566.50 total

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2 years ago
Help me with this!!!
gulaghasi [49]

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3 0
3 years ago
Winston has just gone grocery shopping. The mean cost for each item in his bag was $2.71. He bought a total of 9 items, and the
sukhopar [10]

The cost of the 9th item is  $3.94

Since the mean cost for the 9 items in his bag was $2.71. Then, the total cost will be: = 9 × $2.71 = $24.39

In order to get the price of the 9th item, we have to calculate the price of all the 8 items given which will be:

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Therefore, the cost of the 9th item will be:

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Read related link on:

brainly.com/question/24562826

3 0
2 years ago
Interoperate your solution in the context of the problem.<br> f(10)=1.75r+9
iVinArrow [24]

Answer:

Simplifying

f(r) = 5 + 1.75r

Multiply f * r

fr = 5 + 1.75r

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fr = 5 + 1.75r

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'r'.

f = 5r-1 + 1.75

Simplifying

f = 5r-1 + 1.75

Reorder the terms:

f = 1.75 + 5r-1

Step-by-step explanation:

tada i think

6 0
3 years ago
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