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Hoochie [10]
3 years ago
15

Perform the operation. (6x2 + 7x + 2) - (-9x2 – 10) Perform the operation help please

Mathematics
2 answers:
natita [175]3 years ago
6 0

Answer:

<em>15</em>x^{2}<em> + 7x + 12</em>

Step-by-step explanation:

(6x^2 + 7x + 2) - (-9x^2 - 10)

Flip the sign:

- (-9x^2 - 10) becomes + 9x^2 + 10

Combine like terms:

6x^2 + 7x + 2 + 9x^2 + 10

6x^2 + 9x^2 = 15x^2

2 + 10 = 12

Put it all together:

15x^2 + 7x + 12

GarryVolchara [31]3 years ago
4 0

Answer: x=92

Step-by-step explanation:

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To determine the cost to fertilize the trees, you need to figure out how many kilograms of fertilizer are needed. With the information given, you can determine The number of grams needed to fertilize 1200 trees. To do this you would multiply 200 times 1200. This equals 240,000 grams. To convert this to kilograms, divide 240000g by 1000 g. Every group of 1000 g is 1 kg. The answer is 240 kilograms. Multiply 240 kg by the price of $2.75 per kilogram to get $660 as the cost.
4 0
3 years ago
HELP ASAP!!! WILL GIVE BRAINLIEST! Given that RS=20 and QR=5, identify the length of PS¯¯¯¯¯.
cestrela7 [59]

Answer:

PS = 10 \sqrt{5}

Step-by-step explanation:

8 0
2 years ago
48 wooden pre-sharpened pencils cost $1.88. How much does EACH pencil cost?
Lady bird [3.3K]

Answer:

0.04 is as close as it gets

5 0
3 years ago
Which three expressions are equivalent to 10x +11
BARSIC [14]

Answer:

B, C, and E

Step-by-step explanation:

<u>Simplify all answer choices:</u>

A.

5(2x+10)+1=

10x+50+1=

10x+51

B.

7(x+2)+3x-3=

7x+14+3x-3=

10x+11

C.

3(3x+4)+x-1=

9x+12+x-1=

10x+11

D.

2(6x+4)+2x+5=

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14x+13

E.

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Answer choices B, C, and E simplify to 10x+11

8 0
3 years ago
Ms. Pecho currently owes $637.50 simple interest
rusak2 [61]

Answer:

Step-by-step explanation:1

1/2 years which is 1 year and 5 months.

Explanation:

The formula for simple interest is

You can either substitute the given values first and the solve for

T, or you can transpose the formula to have

T as the subject.

T=100xSIPR

T=100 x 637.50

T=100×637.502500×17

T=1.5

As time is always in years, this means it was for

112 years which is 1 year and 5

months

6 0
3 years ago
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