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Pavel [41]
3 years ago
5

Which of the following is equivalent to (x^2 − 9)(x + 2) − (x^2 + 4x + 4)(x − 5)?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
7 0

The correct answer is D.

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The grocery store is located at a point on a coordinate plane with the same y coordinate as the bank but with the opposite x coo
Cerrena [4.2K]
The vertical axis on a graph is the y-axis and the horizontal axis is the x-axis. Keeping this in mind, if they have the same y coordinate that means vertically they are on the same level but their x coordinates are opposite each other, this means 2 things:
1. they are not on the same level horizontally 
2. you have to cross the vertical (y) axis to get from one point to the other.

So to answer your question, These two points are reflected across the y axis.

Hope this helps.
8 0
3 years ago
The spread of a flu virus on a college campus is modeled by y= 5000/(1+4999e^-0.8t), where y is the number of students infected
Darina [25.2K]

Answer:

537 students

11 days

Step-by-step explanation:

       5000

y=  -----------------

    (1+4999e^-0.8t)

a)  after 8 days  means t =8


       5000

y=  -----------------

    (1+4999e^-0.8*8)

       5000

y=  -----------------

    (1+4999e^-6.4)

       5000

y=  -----------------

    (1+8.306)

       5000

y=  -----------------

    (9.306)

y =537.28

Rounding to the nearest student

y = 537 students


b)  1/2 the student population  means y =2500  (The 5000 is the student population)

             5000

2500=  -----------------

        (1+4999e^-0.8t)

Multiply each side by  (1+4999e^-0.8t)

2500 (1+4999e^-0.8t) = 5000

Divide each side by 2500

(1+4999e^-0.8t) = 5000/2500

(1+4999e^-0.8t) = 2

Subtract 1

(4999e^-0.8t) = 2-1

(4999e^-0.8t)=1

Divide by 4999

(4999/4999e^-0.8t)=1/4999

e^-0.8t=1/4999

Take the natural log of each side

ln(e^-0.8t)=ln(1/4999)

-.8t = ln(1/4999)

Divide by -.8

-.8/-8t = -1/.8 *ln(1/4999)

t = -1/.8 *ln(1/4999)

t≈10.6462

Rounding, it will take 11 days



7 0
3 years ago
Read 2 more answers
Pls answer quickly
Tasya [4]

Answer:

I need the photo

Step-by-step explanation:

I need the photo

6 0
3 years ago
For an indirect proof, what must first be assumed to prove that LaTeX: \angle X∠ Xis a right angle?
Sladkaya [172]

Answer:

If the lines that forms < X are perpendicular, it can be assumed that it is a right angle.

Step-by-step explanation:

An indirect proof of an angle is an assumption about the value of the angle that can be made by mere inspection and some considerations.

                                     < X = right angle =  90^{o}

A right angle is one that is equal to 90^{o}. As an indirect proof, if the lines that forms the angle are perpendicular; then it can be assumed to be a right angle. Because perpendicular lines are at right angle to one another.

4 0
3 years ago
The area of a square is 49cm square. A rectangle has the same perimeter as the square. If the length of the rectangle is 9.3cm w
seropon [69]

Answer:

4.7 cm

Step-by-step explanation:

\sqrt{49} = 7 so side length of the square is 7

7 x 4 = 28 so perimeter is 28cm

28 - 9.3 - 9.3 = 9.4

9.4 / 2 = 4.7 cm

4 0
3 years ago
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