All categories

3 years ago

I NEED HELP PLEASE, THANKS! :)

Mathematics

1 answer:

saw5 [17]3 years ago

4 0

Hey there! :)

Answer:

First option: As x⇒ ∞ f(x) ⇒ -∞. As x⇒ -∞ f(x) ⇒ ∞.

Step-by-step explanation:

Rearrange the equation:

f(x) = -x³ - 2x² + 1

This is a negative cubic function. The function decreases over the interval

(-∞, ∞). Therefore:

As x⇒ ∞ f(x) ⇒ -∞.

As x⇒ -∞ f(x) ⇒ ∞.

This is the first option.

You might be interested in

A local museum had a total of 38,627 vsitors last year. The museum was open everyday except for four holidays. On average how ma

sweet-ann [11.9K]

38,627/361 = 107.

107 people visit the museum every day according to the information given.

8 0

3 years ago

Read 2 more answers

Patrick earns $20 dollars for every lawn ge mows. write an equation used to find t the total amount of money he hearts from mowi

Kisachek [45]

Answer:

t=20n

Step-by-step explanation:

The answer would be t=20n or something similar because 20n stands for $20 per lawn, which equals t, the total.

3 0

3 years ago

An art history professor assigns letter grades on a test according to the following scheme.A: Top 5% of scoresB: Scores below th

adoni [48]

Answer:

Grade B score:

$76 \leq x \leq 89$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73.3

Standard Deviation, σ = 9.7

We are given that the distribution of score on test is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

B: Scores below the top 5% and above the bottom 62%

We have to find the value of x such that the probability is 0.62

$P( X > x) = P( z > \displaystyle\frac{x - 73.3}{9.7})=0.62$

$= 1 -P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.62$

$=P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.38$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 0.305\\\\x = 76.26$

We have to find the value of x such that the probability is 0.05

$P(X < 0.95) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 73.3}{9.7})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 1.645\\\\x = 89.26$

Thus, the numerical value of score to achieve grade B is

$76 \leq x \leq 89$

7 0

3 years ago

Erin's savings increased by 1/2 of her savings is $15,000. Find her savings.

Natasha_Volkova [10]

Answer:

$22,500

Step-by-step explanation:

1/2 of $15000 is $7500, $7500+$15000 is $22,500

5 0

2 years ago

Plzzz zhelpppp plzzz

Novosadov [1.4K]

Answer: true

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers