3 years ago

Give the function f(x) =2x^2+4x-7 find f(-4)? A -55 B -7 C 9 D 25

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

To evaluate f??(- 4) substitute x = - 4 into f(x), that is

f(- 4) = 2(- 4)² + 4(- 4) - 7 = (2 × 16) - 16 - 7 = 32 - 23 = 9 → C

You might be interested in

804.25 CM ROUNDED TO THE NEAREST HUNDRETH

Y_Kistochka [10]

It is 804.25

2 is in the tenths place and then 5 is hundredths place

4 0

2 years ago

Read 2 more answers

Use of law of sines or law of cosines to find the length of side AB PLEASE SHOW WORK!!

NemiM [27]

Answer = 462.738°
if i’m not wrong

8 0

2 years ago

Insert two sets of grouping symbols to make the equation true. 102 + 4 • 6 + 3 − 27 ÷ 9 − 6 = 127

allsm [11]

Idk i literally get one away for everything i do

5 0

2 years ago

Determine

Luden [163]

Answer:

$\mu_{x} = 64, \sigma_{x} = 12.83$

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n of at least 30 can be approximated to a normal distribution with mean $\mu_{x} = \mu$ and standard deviation $\sigma_{x} = \frac{\sigma}{\sqrt{n}}$