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ch4aika [34]
3 years ago
10

Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

Mathematics
2 answers:
musickatia [10]3 years ago
7 0

Answer:

(3x^2+5x-8)+(5x^2-13x-5)=8x^2-8x-13

Step-by-step explanation:

The given polynomials are,

3x^2+5x-8,5x^2-13x-5

In polynomial addition and subtraction only like terms can be added or subtracted.

So,

=(3x^2+5x-8)+(5x^2-13x-5)

=3x^2+5x-8+5x^2-13x-5

=3x^2+5x^2+5x-13x-8-5

=8x^2-8x-13

BartSMP [9]3 years ago
5 0

8x^2 - 8x - 13 hope this helps



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4 0
2 years ago
Linda's penny bank is 2/3 full. After she removes 80 pennies, it is 1/2 full. How many pennies can Linda's bank hold?
Ksju [112]
Let x = the total number of pennies her piggy bank can hold.
Then 2/3x = the number of pennies she started with
Then 2/3x - 80 = the number of pennies she has left after taking out 80 pennies.
Then 1/2x = the number of pennies she has left after taking out 80 pennies.
Build the equation.

2/3x - 80 = 1/2x

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(2/3x - 80) - 1/2x = 1/2x - 1/2x

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8 0
3 years ago
Jose makes $10000 a month plus some money by commission rates. He gets 6% of everything he sells. If Jose sold $59000 worth of i
IgorC [24]

Answer:

$13540

Step-by-step explanation:

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3 years ago
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Arte-miy333 [17]

Answer:

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Step-by-step explanation:

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b) \frac{7+2x}{3} = 5

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joja [24]

Answer:

Step-by-step explanation:

if we're estimating ,we're going to round up to 8 since you can multiply that easier. 25 times 8 is 200 so estimation will be around 200

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