All categories

3 years ago

If x2 + mx + m is a perfect-square trinomial, which equation must be true?

Mathematics

2 answers:

Burka [1]3 years ago

8 0

Answer:

B. x2 + mx + m = (x + 1)2

Volgvan3 years ago

7 0

Your answer is x² + 2x + 1

You might be interested in

Let f(x) = x^2 − 5. Find f(-3)

Art [367]

Answer:

f(-3)=4

Step-by-step explanation:

Substitute x=-3 into the function

f(-3)=(-3)^2-5

f(-3)=9-5

f(-3)=4

5 0

2 years ago

Read 2 more answers

nA car dealer who sells only late-model luxury cars recently hired a new salesperson and believes that this salesperson is selli

7nadin3 [17]

Answer:

The value of an appropriate test statistic for the car dealer to use is -4.

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 4600$

The alternate hypotesis is:

$H_{1} < 4600$

The test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem:

$X = 4100, \mu = 4600, \sigma = 500, n = 16$

Then

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{4100 - 4600}{\frac{500}{\sqrt{16}}}$

$t = -4$

The value of an appropriate test statistic for the car dealer to use is -4.

8 0

3 years ago

If you were teaching a foreign visitor about checking and savings accounts at banks and credit unions in the USA, which item bel

ss7ja [257]

Answer: D. No automatic fees charged to the account.

If I had the chance to teach a foreigner regarding checking and savings account at the banks in the United States, I would remind him/her of this important note. There are no automatic fees charged to the account therefore, consumers cannot protect their rights.

3 0

3 years ago

Read 2 more answers

Find the area of the shape shown below.

Scilla [17]

Answer:

Step-by-step explanation:

Area of a trapezoid can be found using the following formula:

A= base 1 + base 2 / 2 times the height

plug it in

A= 6 + 2/2 times 2

A= 8