3 years ago

What is the product of (4x + 3)(-2x - 5)?

Mathematics

1 answer:

Mariana [72]3 years ago

3 0

Answer:

Expand the polynomial using the FOIL method.

− 8 x^ 2- 26 x − 15

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For what values of x is the quantity x-7

Andreas93 [3]

positive = greater than 0.

Therefore we have the inequality:

$x-7 > 0$ |add 7 to both sides

$x > 7$

7 0

3 years ago

The area of a rectangular wall of a barn is 32 square feet. It’s length is 4 feet longer than the width. Find the length and wid

Gnom [1K]

Answer:

Step-by-step explanation:

Givens

Area = L * w

w = x

l = x + 4

Area = 32

Solution

32 = x(x + 4)

32 = x^2 + 4x

x^2 + 4x - 32

(x + 8)(x - 4)

Only x - 4 is going to make any sense

x - 4 = 0

x = 4

The width is 4

The length is 4 + 4 = 8

4*8 = 32 which is the area.

6 0

3 years ago

the insurance company pays the forecast of 3900 prescriptions claims out of 4500 prescription claims submitted what is the rate

nadya68 [22]

Answer:

x=0.87 or 86.67%

13 prescription claims out of 15 are paid

Step-by-step explanation:

First we organize the data:

prescription claims submitted: 4500

Prescriptions: 3900

The rate of claims paid is calculated using the following formula:

$x =\frac{Paid}{Total}$

We know that:

Paid = 3900

Total = 4500

$x =\frac{3900}{4500}$

$x =\frac{39}{45}$

$x =\frac{13}{15}$

x=0.87

6 0

3 years ago

A culture started with 5,000 bacteria. After 2 hours, it grew to 5,500 bacteria. Predict how many bacteria will be present after

Luden [163]

Answer:

8,056

Step-by-step explanation:

I took the application

8 0

2 years ago

4000(1 + 0.025/52) 52•15=<br> Round answer to the nearest hundredth

Sauron [17]

Use PEMDAS to solve this so

4000(1.0005) 52 • 15 =
4002 (52) • 15 = 3,121,500

4 0

3 years ago