What is the value of n so that the expression x^2+11x+n is a perfect square trinomial?

julsineya [31]

First of all, you would use the FOIL method for -5(a + 3). This means to just multiply -5 to all of the values in the parenthesis. This would equal:

-5a -15 = -55

Then after, you would add 15 for both sides and get -5a = -40

Divide by -5 on both sides, you get a = 8.

Here is a visual representation: https://puu.sh/zPxLC/a16740d0ce.png

7 0

2 years ago

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PLEASE HELP!!!!

IgorLugansk [536]

If you are given the banned PED's with a sensitivity of 88% and a specificity of 94% and then a study suggests that approximately 25% of baseball players use PED's. The answers would be:

A) Of those who tested positive, there are 44 percent who were falsely accused.
B) Of those who tested negative, there are 55 percent who actually use PED's

7 0

3 years ago

Plz help this paper is worth 50 points

Svetlanka [38]

Answer:

c

Step-by-step explanation:

5 0

2 years ago

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Would do anything for the answer to this question

olga_2 [115]

Given:

The length of the entire rectangle is 10x + 7.

The width of the entire rectangle is 6x.

The length of the unshaded rectangle is 4x - 5.

The width of the unshaded rectangle is 2x.

We need to determine the area of the shaded region of the rectangle.

Area of the entire rectangle:

The area of the entire rectangle can be determined using the formula,

$A=length \times width$

Substituting the values, we have;

$A_1=(10x+7)(6x)$

$A_1=60x^2+42x$

Thus, the area of the entire rectangle is 60x² + 42x

Area of the unshaded rectangle:

The area of the unshaded rectangle can be determined using the formula,

$A=length \times width$

Substituting the values, we have;

$A_2=(4x-5)(2x)$

$A_2=8x^2-10x$

Thus, the area of the unshaded rectangle is 8x² - 10x

Area of the shaded region of the rectangle:

The area of the shaded region of the rectangle can be determined by subtracting the area of the entire rectangle by the area of the unshaded rectangle.

Thus, we have;

$A=A_1-A_2$

Thus, we have;

$A=60x^2+42x-(8x^2-10x)$

$A=60x^2+42x-8x^2+10x$

$A=52x^2+52x$

$A=52x(x+1)$

Thus, the area of the shaded region of the rectangle is 52x(x + 1)

3 0

3 years ago

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At a high school football game, 4 out of every 7 students in line to buy a ticket wore a hat.

butalik [34]

Answer:

Out of 350 students in line, 200 of them wore a hat.

Out of 350 students, 150 did not wear a hat.

Step-by-step explanation:

I divided 350 by 7 and got 50. Then, I multiplied 50 by 4 (the number of students out of 7 that wore a hat) to get 200, which is the number of students in line that did wear a hat. The rest did not wear a hat, so to find that number I subtracted 200 from 350 and got 150, which is the number of students that didn't wear a hat.

hope this helps :)

8 0

2 years ago

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