3 years ago

Find f(-2) for the function f(x)= 3x2-2x+7

Mathematics

1 answer:

4vir4ik [10]3 years ago

4 0

Answer:

f( - 2) = 23

Step-by-step explanation:

$f(x) = 3 {x}^{2} - 2x + 7 \\ plug \: x = - 2 \\ f( - 2) = 3 {( - 2)}^{2} - 2( - 2)+ 7 \\ = 3 \times 4 + 4 + 7 \\ = 12 + 11 \\ \huge \red{ \boxed{ f( - 2) = 23}}$

You might be interested in

Two groups of tourists are on the same floor of a skyscraper they are visiting, and they board adjacent elevators at the same ti

Mariulka [41]

Let time be x distance be y

140x=y-(1)
290x=360-y-(2)

Put value in eq(2)

$\\ \rm\longmapsto 290x=360-(140y)$

$\\ \rm\longmapsto 440x=360$

$\\ \rm\longmapsto x=1.2min$

Put it in eq(1)

d=1.2(140)=168m

7 0

2 years ago

A marathon is a race that is 42.195 kilometers long. Joel ran two marathons this year. How many total kilometers did he run betw

nignag [31]

84.39 is ya answer to the question

8 0

3 years ago

Read 2 more answers

Help me with this :)))))))

lora16 [44]

Answer:

QR= 16

Step-by-step explanation:

HOPE THIS HELPS

3 0

3 years ago

The school Library was building a new one-room addition. the architects drawing shown below uses the scale 1/8 in = 1ft

EastWind [94]

Answer:

the total are is 459

Step-by-step explanation:

3 3/16 divided by 1/8 = 25 1/2 or 25.5

2 1/4 divided by 1/8 = 18

so 18 x 25.5 = 459

hope this helps

8 0

3 years ago

Read 2 more answers

300 30 3 0.3 follows what pattern

labwork [276]

Divide 10 each time.

300/10=30
30/10=3
3/10=0.3
0.3/10=0.03
0.03/10=0.003
etc.

3 0

3 years ago