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Artyom0805 [142]
3 years ago
14

Choose the correct simplification of the following: (2x^2 + x - 1) - (x^2 + 3x – 5)

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0

Answer:

x^2 - 2x + 4

Step-by-step explanation:

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Alex bought six books priced at $8 each. He got a discount of 20% off the total cost. How much did Alex pay for the books? Write
Burka [1]
Six books at 8 dollars each is equivalent to $48.00

You are only paying 80% of that cost (100%-20%)

Therefore you are multiplying 48 by .8 

Your answer should be equal to $38.40
7 0
3 years ago
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Solve for n:<br> 6 - (8 - 4n) = 2(2n - 1)
Veronika [31]
N has infinite answers
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3 years ago
Write the perimeter of each figure as a trinomial. <br> Must show your work.
noname [10]

Answer:

P = 2n + 8m - 1

Step-by-step explanation:

A <u>trinomial is an expression or equation that has three terms</u>. A term is when between the numbers or variables, the operations are neither subtraction nor addition, or when there is only one number.

If two terms have the <u>same variable</u>, called <u>like terms</u>, they can be combined by addition or subtraction.

The perimeter is the total length of all the sides.

The formula for the perimeter of a triangle is P = s_{1} + s_{2}  + s_{3} for each of the three sides.

Substitute each of the three sides.

P = s_{1} + s_{2}  + s_{3}

P = n + (2m + n)  + (6m - 1)

P = n + 2m + n  + 6m - 1 brackets can be removed

P = n + n + 2m + 6m - 1 rearrange equation according to like terms

P = 2n + 8m - 1 collected the like terms by addition

3 0
3 years ago
Help...this is due in a few hours
Mrrafil [7]

Answer:

21

Step-by-step explanation:

14+7=21.

You do this to allow you to get that outcome, because you know 7*7=49.

Therefore 21-14=7

7*-7=49

6 0
3 years ago
Geometry problem<br> I’ll mark the BRAINIEST
melamori03 [73]

Answer:

Step-by-step explanation:

Pretty Tall.

Tan(72) = opposite / adjacent

The opposite is the height of the building

The adjacent = 100

Tan 72 = 3.077

Tan (72) = opposite / 100

3.077 = opposite / 100                   Multiply by 100

3.077 * 100 = opposite

opposite = 307.7

opposite rounded = 308

3 0
3 years ago
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