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Reptile [31]
3 years ago
9

The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a

system to determine the correct numbers)
Mathematics
1 answer:
goldfiish [28.3K]3 years ago
3 0

X+y/2=7

X+y=14

3x=y/2

6x=y

X+6x=4

7x=14

X=2

Y=6*2=12

X=2

Y=12


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Lana71 [14]

Answer:

$127.50

Step-by-step explanation:

To answer this you will need to figure out how many days each person is working each week based on their number of hours and how many hours they work.  Use this to determine the number of dogs groomed and then multiply by the hourly rate.

Dana works 4 days (40/10) and Monique works 5 days (40/8).

Dana:  15 dogs per day x 4 days a week x $12.75 per dog = $765 a week.

Monique: 10 dogs per day x 5 days a week x $12.75 per dog = $637.50 a week.

765 - 637.50 = $127.50.

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2 years ago
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nadezda [96]

Answer:

D. 49p² - 64

Step-by-step explanation:

(7p - 8)(7p + 8)

Solving this requires the 'difference of squares' concept which states;

If (a - b)(a + b)

Then the solution must be a² - b²

Considering (7p - 8)(7p + 8) then the answer is;

(7p)² - 8² = 49p² - 64

6 0
3 years ago
I need help on this and more so can sb help me ?..
nignag [31]

Answer:

Its the 2nd one

Step-by-step explanation:

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4 0
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polet [3.4K]

Answer:

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Step-by-step explanation:

The least number of degree is 3 and the third root should be (4 - i) to make polynomial rational.

<u>The polynomial is:</u>

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2 years ago
What is the volume of this figure?
Sav [38]

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90 cubic inches

Step-by-step explanation:

4 0
3 years ago
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