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balandron [24]
2 years ago
15

(5x+3y) - (2x-7y) +8x

Mathematics
1 answer:
Pepsi [2]2 years ago
3 0

Answer:

11x + 10y

Step-by-step explanation:

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Use the GCF and distribute property to express the sum as a product 20+60
kenny6666 [7]
20(1+3)

The greatest common factor between the two numbers is 20, because both numbers are divisible by 20. It cannot be any higher because 20 is one of the numbers itself. You divide this out of both numbers and put it outside the function with the use of parenthesis. 
8 0
2 years ago
What are the factor pairs that multiply to be 30 and has a sum of 13?
Usimov [2.4K]

Answer:

3 and 10

Step-by-step explanation:

3 plus 10 equals 13

3 times 10 equals 30

5 0
2 years ago
An engineer estimated the weight of a steel beam to be 600 pounds. The actual weight of the beam was 639 pounds. Find the absolu
mario62 [17]

Answer:

Absolute error = 39

Percent Error = 6.10%

Step-by-step explanation:

Actual value = 639 pounds

Observed Value = 600 pounds

The formula to find absolute error is:

Absolute Error = Actual value - Observed Value

                        = 639 - 600

                        = 39

The formula to find Percent error is:

Percent Error = (Actual value - Observed Value / Actual value)*100

                       = (639 - 600/639)*100

                       = 6.10%

                 

7 0
2 years ago
Read 2 more answers
Each week, Alfonso earns $85 for every shift he works at the theater and $15 for every dog-walking job. He uses the expression 8
sesenic [268]
So you didn't put an actual question. To find the money he makes you just plug in the numbers.
If he works 4 shifts at the theater you replace x with 4. Then, you find 85 x 4. You do the same thing with 15y.
8 0
3 years ago
Andrea paid $9.99 to join an online music service. If she purchases 12 songs each month at a cost of $0.80 per song, what will b
Taya2010 [7]

Answer:

67.59

Step-by-step explanation:

12x0.80=9.60, 9.60x6=57.6, 57.6+9.99=67.59

3 0
3 years ago
Read 2 more answers
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