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vovikov84 [41]
4 years ago
5

Please can someone help!

Mathematics
2 answers:
KIM [24]4 years ago
6 0

Answer:

Charles: 17 points

Adam: 25 points

Bethany: 30 points

stira [4]4 years ago
6 0

Answer:

Adam scored 25 points.

Bethany scored 30 points.

Charles scored 17 points.

Step-by-step explanation:

A = Adam, B = Bethany, C = Charles

What we know:

C + 8 = A

A +  5 = B

A + B + C = 72

Charles:

C + 8 + 5 = B

C + (C + 8) +  (C + 13) = 72

72 - 8 - 13 = 51

51/3 = 17

Charles scored 17 points.

Bethany:

17 + 13 = 30

Bethany scored 30 points.

Adam:

17 + 8 = 25

Adam scored 25 points.

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Solve the system using elimination,<br> 2x - 3y = - 19<br> 7x + 7y = 21
blagie [28]

Answer:

x = -2

y = 5

Step-by-step explanation:

2x - 3y = -19  ---------------------------(I)

7x+ 7y = 21  -----------------------------(II)

Multiply equation (I) by 7 and equation (II) by 3.Then add and so y will be eliminated and you will get the value of x

(I)*7              14x - 21y = - 133

(II)* 3           <u> 21x + 21y = 63  </u>        {Now add}

                   35x          = -70

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x = - 2

Plug in x = - 2 in equation (I)

2*(-2) - 3y = -19

-4 -  3y  = -19

     -3y = -19 + 4

     -3y = -15

         y = -15/-3

y = 5

8 0
3 years ago
Percy works two part-time jobs to help pay for college classes. On Monday, he works 3 hours at the library and 2 hours at the co
tekilochka [14]
We need to solve this system 
<span>(3x + 2y = 36.50)    *5
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11x=82.5
x= 7.50  at the library


</span>2x + 5y = 50.00   
<span>2*7.5+5y=50
15+5y=50
5y=35
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So,
correct answer is 
</span><span>C.Percy earns a greater hourly wage of $7.50 at the library.</span><span>

</span>
5 0
3 years ago
14) BRAINLIEST + POINTS!
lapo4ka [179]

Answer:

(-7, -3)

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i used a graph and measure it but really use:  Subtract the point M x-coordinate from the midpoint x-coordinate (final-initial) to find the distance between them. This will give you 3. Multiply the by 2 because the midpoint is halfway between point A and B.

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3 years ago
What is the factored form of x^12y^18+1?
Arte-miy333 [17]
The answer to that is (x^4 y^6+1)(x^8 y^12-x^4 y^6+1
6 0
3 years ago
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erastova [34]
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4 years ago
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