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IrinaK [193]
3 years ago
7

Which polynomial represents the difference below 2x2+7x+6 - (3x2-x) ----------------

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Answer: -x^2+8x+6

Step-by-step explanation:

For this exercise is important to remember the multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-

Then, Given the following expression:

2x^2+7x+6 - (3x^2-x)

The first step is to distribute the negative sign in order to eliminate the parentheses:

2x^2+7x+6 - (3x^2-x)=2x^2+7x+6 -3x^2+x

The final step is to add the like terms.

Therefore, the polynomial that represents the differences is:

=-x^2+8x+6

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Help this is due tomorrow please! Carter has 88 feet of fencing to enclose a dog pen in his yard. He is trying to decide whether
svet-max [94.6K]
<h3>Answer:</h3>

The circle makes the larger area

The difference in the two areas is roughly 132.2479 square feet.

=================================================

Explanation:

If Carter decides to go for a circle, then 88 is the circumference, which is the distance around the circle (aka perimeter of the circle).

Use this to find the radius needed

C = 2*pi*r

r = C/(2pi)

r = 88/(2pi)

r = 44/pi

I'll leave it in exact form rather than approximate it.

Once we know the radius, we can find the area of the circle.

A = pi*r^2

A = pi(44/pi)^2

A = pi*(1936/(pi^2))

A = 1936/pi

A = 616.247939651819 approximately

I used my calculator's stored version of pi to compute the area in the final step.

We'll be comparing this number later, so hold onto it for now.

-------------------------------------

If Carter instead decides for a square, then 88 is the perimeter since it's the amount of fencing he has to work with.

Divide it into 4 pieces to find the length of each side of the square (all sides are equal in a square)

88/4 = 22

Each side is 22 feet

The area of this square is (22)^2 = 22*22 = 484 square feet

--------------------------------------

Summary:

  • If Carter goes for a circular enclosure, then he gets roughly 616.2479 square feet.
  • The square enclosure only gets him exactly 484 square feet.

The circle wins in terms of larger area.

The difference being roughly 616.2479  - 484 = 132.2479 square feet.

3 0
3 years ago
Solve for q.<br> 29 - q = 8<br> q=
miv72 [106K]
Q = 21

29 - q = 8
First subtract 29 from both sides.

-q = 8 - 29

Subtract 29 from 8 which is -21.

Then flip the signs.

q = 21
3 0
3 years ago
09:30 to 17:00 minus 30 minutes <br> How many hours is that ?
pentagon [3]

Answer:

7 hours

Step-by-step explanation:

9 : 30 to 17:00 = 7 hours 30 minutes

Minus 30 minutes = 7 hours

6 0
3 years ago
A manufacturer has 5,634 pens to divide into packs of 4 pens. The manufacturer makes as many packs as possible.
Pachacha [2.7K]

Answer:

1,408 packs can be made, and 2 pens will be left out.

Step-by-step explanation:

Given that a manufacturer has 5,634 pens to divide into packs of 4 pens, and the manufacturer makes as many packs as possible, to determine how many packs of pens does the manufacturer make, and how many pens are left over, the following must be done calculation:

5.634 / 4 = X

1,408.5 = X

5,634 - (1,408 x 4) = X

5.634 - 5.632 = X

2 = X

Therefore, 1,408 packs can be made, and 2 pens will be left out.

4 0
3 years ago
If it takes 15 min to load 3 racks of buns, how many hours will it take to load 36 racks?
GrogVix [38]
Set up the equation of two ratios:  

3 racks        36 racks
-----------  = --------------
15 min                 x

Solve this for x:  3x =540; x = 180 minutes, or 3 hours
6 0
3 years ago
Read 2 more answers
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