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Oxana [17]
3 years ago
6

a master roof can cover a garage in 1 hour less than her new assitant. if they work together, they can complete the job in 7.75

hours. how long would it take the assistant to complete the job working alone?
Mathematics
1 answer:
Art [367]3 years ago
7 0
Idek i need to unlock sometin sooo
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Micah was asked to add the following expressions: 3x2−x−9x2+3x+2+−2x2+2x+5x2+3x+2 First, he combined like terms in the numerator
Natalka [10]

Micah was asked to add the following expressions:

\frac{3x^2-x-9}{x^2+3x+2} + \frac{-2x^2+2x+5}{x^2+3x+2}

First, he combined like terms in the numerator and kept the common denominator

First step is correct. He added the like terms in the numerator, because the denominators are same.

3x^2 -x -9 -2x^2+2x+5 becomes x^2 +x -4

So he got , \frac{x^2+x-4}{x^2+3x+2}

In the next step, he cannot cancel out x^2 from the top and bottom . Because x-4 and 3x+2  are added with x^2

If we have x^2 is multiplied with other terms at the top and bottom , then we can cancel out x^2.

So Micah added the expression incorrectly. Final answer is not correct.

5 0
3 years ago
Greatest to least thats the order they need to be in
Pani-rosa [81]

Answer:

-396, -430, -452, -502

Step-by-step explanation:

In negatives, the lowest number is the highest number. -502 has the number "502" in it, which means it's the lowest. -396 has the number "396" in it, which means it's the greatest. Therefore, the answer is -396, -430, -452, -502.

Garden eel, Great white shark, Sea urchin, Sea turtle.

5 0
3 years ago
If half of a pie is eaten what part remains
Alexandra [31]
It depends on the fraction. If it is 10nth of a pie then it would be 5/10 if it is two then 1/2
4 0
3 years ago
Read 2 more answers
Find the product 8/6n - 4(9n^2 -4)
Brrunno [24]

Answer:

- (27n^3 - 12n - 1) over 3n

Step-by-step explanation:

4 0
3 years ago
Will mark brainliest
castortr0y [4]
4.1x + 29 is the correct answer
8 0
3 years ago
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