All categories

3 years ago

Which of the following statements is true about the given function?

Mathematics

2 answers:

Maslowich3 years ago

4 0

I think the answer is c

Vaselesa [24]3 years ago

3 0

The quadratic formula is:

x = (-b plus or minus √b² - 4ac)/2a

Therefore, the other answer would be √7 - 5i

You might be interested in

9h + 2

Pavlova-9 [17]

E= I x R divide I from both sides
E/I = R or R = E/I which is D in the answer selection.

7 0

3 years ago

Read 2 more answers

What is 9x-8=0 help pls

Tamiku [17]

Answer:

$\large\boxed{x=\dfrac{8}{9}}$

Step-by-step explanation:

$9x-8=0$ <em>add 8 to both sides</em>

$9x-8+8=0+8$

$9x=8$ <em>divide both sides by 9</em>

$\dfrac{9x}{9}=\dfrac{8}{9}\\\\x=\dfrac{8}{9}$

8 0

3 years ago

Read 2 more answers

Evaluate -4/(4)2??????????!!!!!!!!!!

scoray [572]

Answer:

-4/2 is equal to -2.

-2 times -4 is equal to 8.

Therefore, (-4)-4/2

5 0

3 years ago

Read 2 more answers

Assume that the heights of boys in a high school basketball tournament are normally distributed, with mean 70 inches and standar

Annette [7]

Answer: 20

Step-by-step explanation:

We assume that the heights of boys in a high school basketball tournament are normally distributed.

Given : Mean height of boys : $\mu=70$ inches.

Standard deviation: $\sigma=2.5$ inches.

Let x denotes the heights of boys in a high school basketball tournament .

Then the probability that a boy is taller than 70 inches will be :-

$P(x> 70)=1-P(x\leq70)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{70-70}{2.5})\\\\=1-P(z\leq0)=1-0.5=0.5\ \ \text{[by using z-value table]}$

Now, the expected number of boys in a group of 40 who are taller than 70 inches will be :-

$40\times0.5=20$

Hence, the expected number of boys in a group of 40 who are taller than 70 inches=20

6 0

3 years ago

Gail runs a taxi.

grigory [225]

Answer:

£37

Step-by-step explanation:

£1.90x20

= £38

£75-£38

=£37

4 0

3 years ago