It would be C. since the -7 means you move 7 units downwards on the graph, and E. since smaller slopes are wider, whereas larger slopes are more narrow

7 0

3 years ago

Which of the following is a quadratic function

Yuliya22 [10]

Answer: y = 2x² - 12x + 9

<u>Step-by-step explanation:</u>

Quadratic equation must be in the form:

y = ax² + bx + c

The only equation provided that is in this form is:

y = 2x² - 12x + 9

4 0

4 years ago

At a particular academically challenging high school, the average gpa of a high school senior is known to be normally distribute

brilliants [131]

Solution: The 90% confidence interval for the population mean is:

$\bar{x} \pm t_{\frac{0.1}{2}} \frac{s}{\sqrt{n}}$

Where:

$\bar{x}=2.71$

$s=\sqrt{0.25} =0.5$

$t_{\frac{0.1}{2}}=1.729$ is the critical value at 0.1 significance level for df = n-1 =20-1=19

$2.71 \pm 1.729 \frac{0.5}{\sqrt{20}}$

$2.71 \pm0.19$

$\left( 2.71-0.19,2.71+0.19\right)$

$\left(2.52,2.90 \right)$

Therefore, the 90% confidence interval for the population mean is $\left(2.52,2.90 \right)$

7 0

4 years ago

Read 2 more answers

Who could help me in mathematics

Vikki [24]

Rhombus no right angles 2 pairs of parallel sides

7 0

3 years ago

2+3 plz what is the answer ​

2+3 plz what is the answer