3 years ago

The function f(x) = -5x2 + 3 is

Mathematics

1 answer:

asambeis [7]3 years ago

5 0

Answer:

A. -77 < f(x) < -2

Step-by-step explanation:

- 4 < x < -1 so : (-1)² < x² < (-4)² because f is decrasing if - 4 < x < -1

1< x² < 16.....now multiply by : -5

-80 < - 5x² < -5 add 3 you have : -77< - 5x²+3 < -2

-77 < f(x) < -2

You might be interested in

Determine triangle type

nika2105 [10]

Answer:

isosceles acute

Step-by-step explanation:

two same sides so it is isosceles and all angles under 90 so acute

4 0

3 years ago

Read 2 more answers

Rewrite the the expression using as few terms as possible. X^2+5x+4x+20

Effectus [21]

Answer:

x^2 + 9x + 20

Step-by-step explanation:

x^2 + 5x + 4x + 20

x^2 + 9x + 20

all u have to do is combine liked terms

8 0

3 years ago

A principal of $2600is invested at 6.75% interest, compounded annually. How much will the investment be worth after 14 years

dedylja [7]

Answer:

$6488.19

Step-by-step explanation:

To solve this problem we use the compounded interest formula:

$amount = principal(1 + (r \n))^({n}{t})$

a = $2600(1+(0.0675/1))¹*¹⁴

a = $6488.19

8 0

4 years ago

A local pet store sells a variety of animal supplies and pet accessories. The pet store has different sections for dogs, cats, b

Debora [2.8K]

The answer is d for this problem

8 0

3 years ago

I need help with this question.

Valentin [98]

Answer:

x = 7.5

Step-by-step explanation:

A scale factor of 0.75 means all the dimensions are multiplied by 0.75. When the dimension 10 is multiplied by 0.75, it becomes ...

... x = 0.75 × 10 = 7.5

5 0

3 years ago