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3 years ago

The expression below is the factorization of what trinomial?

Mathematics

1 answer:

melomori [17]3 years ago

8 0

Answer:

Step-by-step explanation:

Given

- 1(x + 7)(x - 4)

each term in the second factor is multiplied by each term in the first factor, that is

leaving the multiplier of - 1 for the time being

x(x- 4) + 7(x - 4) ← distribute both parenthesis

= x² - 4x + 7x - 28 ← collect like terms

= x² + 3x - 28

Hence

- 1(x² + 3x - 28) = - x² - 3x + 28 → D

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Simplify the following algebraic expression: 2 (2x + 3y) + 3 (5 – 2x) +1+y

Gnoma [55]

Answer: -2x+7y+16

Step-by-step explanation:

1. Distribute 2 through the parentheses

4x+6y+3(5-2x)+1+y
4x+6y+15-6x+1+y

2. Collect like terms

-2x+6y+15+1+y
-2x+7y+15+1
-2x+7y+16

3. Solution, -2x+7y+16

5 0

3 years ago

Discount on LCD TV is $240. Sale Price is $1575.00 What was the list price?

Vikki [24]

Answer: The list price was $1815.00.

Step-by-step explanation: Given that the discount on a LCD TV is $240 and the sale price is $1575.00.

We are to find the list price.

The discount is given on the price that is listen on the LCD TV.

So, the list price will be equal to the sum of the sale price and the discount price.

Therefore, the required list price of the LCD TV is given by

$L.P.\\\\=\textup{sale price}+\textup{discount}\\\\=\$(1575.00+240.00)\\\\=\$1815.00.$

Thus, the list price was $1815.00.

3 0

3 years ago

Y = -2x + 13 when x = 6

elena-14-01-66 [18.8K]

Answer: 1

Work: After plugging in the 6 in the X, the new equation is -2(6) + 13. After doing the multiplication of -2 and 6, you get -12. Add -12 + 13, and the answer (Or y) equals 1.

I hope this helps, and Happy Holidays! :)

6 0

3 years ago

Read 2 more answers

Find the value of y, thanks! Please an explanation.

lawyer [7]

20° is the answer if you look on the other side

4 0

3 years ago

Percent error that is greater than 20% but less than 50%

NNADVOKAT [17]

Answer:

30 40 percent

Step-by-step explanation:

it is less that 50

3 0

3 years ago

Read 2 more answers