2 years ago

Tina was given the function y = x 2+ x – 5. For what x value(s) would y = 15?

Mathematics

1 answer:

ziro4ka [17]2 years ago

6 0

Answer:

the correct answer is 4

Step-by-step explanation:

y = x^2 + x - 5

y = 4^2 + 4 - 5

y= 16 + 4 -5

y = 15

You might be interested in

A stack of books is 21 inches tall. Each book is 1 3/4 inches. How many books are there?

Maru [420]

There are twelve books

3 0

3 years ago

Read 2 more answers

Estimate of 2,854x9 help me find it and you’ll get ten points

iVinArrow [24]

The answer to this question is 25,686

8 0

3 years ago

Read 2 more answers

Help will give crown

frosja888 [35]

Answer:

This means our slope is equal to $\frac{6}{4}$ .

Step-by-step explanation:

Your ordered pairs are:

(-4, -4) and (0, 2)

To solve for the slope, we must use slope formula.

$\frac{y2-y1}{x2-x1}$

Substitute:

$\frac{2+4}{0+4}$

Solve:

$\frac{6}{4}$

This means our slope is equal to $\frac{6}{4}$ .

Hope this helped. :)

4 0

3 years ago

Read 2 more answers

On a scale from -5 to 5 which numbers are smaller than 2

zlopas [31]

Answer:

The answer is -5, -4, -3, -2, -1, 0, 1.

Step-by-step explanation:

Because they are behind the number 2

4 0

3 years ago

Read 2 more answers

A recent survey of 50 executives who were laid off during a recent recession revealed it took a mean of 26 weeks for them to fin

g100num [7]

Answer: $(24.28,\ 27.72)$

Step-by-step explanation:

Given : Sample size : $n=50$

Sample mean : $\overline{x}=26$

Standard deviation : $\sigma =6.2$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=26\pm(1.96)\dfrac{6.2}{\sqrt{50}}\\\\\approx26\pm1.72\\\\=(26-1.72,\ 26+1.72)\\\\=(24.28,\ 27.72)$

Hence, a 95% confidence interval for the population mean = $(24.28,\ 27.72)$

6 0

2 years ago