All categories

3 years ago

F(x)=−4x ^ 2 +10 {Find }f(-2)

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

3 0

Answer:

$f(-2) = -6$

Step-by-step explanation:

$f(-2) = -4(-2)^2 + 10$

$f(-2) = -4(4) + 10$

$f(-2) = -16 + 10$

$f(-2) = -6$

Answer: $f(-2) = -6$

You might be interested in

Use the compound interest formula A= P1+

USPshnik [31]

Answer:

1,039.68

Step-by-step explanation:

7 0

3 years ago

Describe the process for calculating the volume of a pyramid. Use complete sentences.

Nataly [62]

The volume of a pyramid can be calculated by first calculating the area of the base, then multiply the result to the height of the pyramid and then divide the result by 3.

5 0

4 years ago

Read 2 more answers

Test the claim that the proportion of men who own cats is smaller than the proportion of women who own cats at the .10 significa

nata0808 [166]

Answer:

The test statistics is $t = -1.40$

The critical value is $Z_{\alpha } = 2.33$

The null hypothesis is rejected

Step-by-step explanation:

From the question we are told that

The sample size for men is $n_1 = 80$

The sample proportion of men that own a cat is $\r p _M = 0.40$

The sample size for women is $n_2 = 80$

The sample proportion of women that own a cat is $\r p_F = 0.51$

The level of significance is $\alpha = 0.10$

The null hypothesis is $H_o : \r p _M = \ r P_F$

The alternative hypothesis is $H_a : \r p _M < \r p_F$

Generally the test statistic is mathematically represented as

$t = \frac{(\r p_M - \r p_F)}{\sqrt{\frac{(p_M*(1-p_M)}{n_1 } } + \frac{p_F*(1-pF)}{n_2 } }$

=> $t = \frac{(0.40 - 0.51)}{\sqrt{\frac{(0.40 *(1-0.41)}{80} } + \frac{0.51*(1-0.51)}{80 } }$

=> $t = -1.40$

The critical value of $\alpha$ from the normal distribution table is

$Z_{\alpha } = 2.33$

The p-value is obtained from the z-table ,the value is

$p-value = P( Z < -1.40) = 0.080757$

=> $p-value = 0.080757$

Given that the $p-value < \alpha$ then we reject the null hypothesis

7 0

3 years ago

An entertainment reporter examines the average ticket prices of Broadway shows, comparing them to the number of total performanc

Marizza181 [45]

Answer: D

Step-by-step explanation: I believe it's D because there's a STRONG, POSITIVE RELATIONSHIP so they're both increasing, but there's no correlation

3 0

3 years ago

Using Newton-Raphs<br>f (x) = 2x3 + x2 - x + 1 accurate to within 10-4

Sergio [31]

Answer:

2x3+x2−x+1x

Step-by-step explanation:

Let's solve for f.

fx=2x3+x2−x+1

Step 1: Divide both sides by x.

fx=2x3+x2−x+1x

fx=2x3+x2−x1x

Answer:

4 0

3 years ago

Read 2 more answers