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Alik [6]
2 years ago
13

I need help with this ?

Mathematics
1 answer:
Alex2 years ago
8 0

Answer:

Joshua worked 4 hours and luke worked 7

Step-by-step explanation:

25x + 35x +105 = 345

60x = 345 - 105

60x = 240

x = 240/60

x = 4 hours

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What is the best approximation for the area of a circle with a diameter of 19 meters?
FromTheMoon [43]
A = \pi r^{2} is the equation used for determining area from radius.  We're given diameter, so to get the radius simply divide by 2. 19/2 = 9.5.

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yKpoI14uk [10]

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What is the total weekly pay for a person earning $9.00 an hour and working only 8 hours a day for 5 days?
melomori [17]
First you woyld find how many hours total he worked.
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3 years ago
Show work, please someone help me, i'm confused still on this concept.
BigorU [14]
Answer: choice C) -15x^4y

-----------------------------------------

Explanation:

The coefficients are -3 and 5. They are the numbers to the left of the variable terms
Multiply the coefficients to get -3*5 = -15. So -15 is the coefficient in the answer

Multiply the x terms to get x^3 times x = x^(3+1) = x^4. Notice the exponents are being added

Do the same for the y terms as well: y^2 times y^(-1) = y^(2+(-1)) = y^(2-1) = y^1 = y

So we have a final coefficient of -15, the x terms simplify to x^4 and the y terms simplify to just y

Put this all together and we end up with -15x^4y which is what choice C is showing

3 0
3 years ago
Please help me with this...
mr_godi [17]
I dont see anything u have to post on here whats the question you need help on ?

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