All categories

3 years ago

If f (x) = 9x squared + 6x - 8, then f (-2) = ?

Mathematics

2 answers:

Reika [66]3 years ago

7 0

Answer:

f(-2)=16

Step-by-step explanation:

f(x)=9x^2+6x-8

f(-2)=9(-2)^2+6(-2)-8

f(-2)=9(4)+6(-2)-8

f(-2)=36-12-8

f(-2)=24-8

f(-2)=16

marusya05 [52]3 years ago

6 0

Answer:

gtvgvghhhhhh

gggyhhvfyhyjjhbu

yjnbgjjbvyhnvfhyuyujhgujn

hhjhu

You might be interested in

What are the solutions of 5x+23>2x−4?

zhuklara [117]

Answer:

answer :

$x > - 9$

solution:

step 1 :

$5x - 2x > - 4 - 23$

step 2 :

$3x > - 27$

step 3 :

$x > \frac{ - 27}{3}$

final step :

$x > - 9$

4 0

3 years ago

A recipe calls for 3 cups of pecans for every 5 cups of walnuts. How many cups of pecans should be added to 8 cups of walnuts?

Harman [31]

Answer:

4.8

Step-by-step explanation:

3:5

3/5 : 1

8(3/5):1(8)

4.8:8

7 0

3 years ago

A teacher wants to buy supplies for two of their students, Susie and John. This teacher wants to spend at least $5 on each stude

tino4ka555 [31]

X and y represent the two students.

Teacher wants to spend at least $5 in each of x and y. That means x or y could be either equal to 5 or higher than 5.
x ≥ 5
y ≥ 5

Teacher only spends under $30. That means the sum of x and y couldn't be equal to higher than 30. It should be lower than 30.
x + y < 30

The correct answer is option D

6 0

4 years ago

Tina practiced piano for 15 hours last month and 45 hours this month. Use multiplication to write a statement comparing the hour

Pani-rosa [81]

Answer: Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3 =45 hours.

Step-by-step explanation:

Given : Duration of Tina practiced piano last month= 15 hours

Duration of Tina practiced piano this month= 45 hours

We can see 45 is a multiple of 15 such that $45=15\times3$