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brilliants [131]
3 years ago
15

F(x)=3x² + x-7 Find f(-2)​

Mathematics
1 answer:
Andrews [41]3 years ago
5 0

Answer:

3

Step-by-step explanation:

f(x)=3x² + x-7

if f(-2)​

3(-2)²+-2-7

--> 3

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Which expressions are less than 7/8? Choose all answers that apply: 7/8 x 9/15 7/8 x 3/4 7/8 x 9/9 7/8 x 4/3 ​
seraphim [82]

Question

Which expressions are less than 7/8? Choose all answers that apply:

a) 7/8 x 9/15

b) 7/8 x 3/4

c) 7/8 x 9/9

d) 7/8 x 4/3 ​

Answer:

a) 7/8 x 9/15

b) 7/8 x 3/4

Step-by-step explanation:

We are asked to find which expression are least than 7/8

Solving 7/8 = 0.875

We would evaluate the given option one after the other.

a) 7/8 x 9/15

= 63/120 = 0.525

b) 7/8 x 3/4

= 21/32 = 0.65625

c) 7/8 x 9/9

= 7/8 × 1 = 7/8 = 0.875

d) 7/8 x 4/3

= 7/6 = 1.1666666667

Therefore, from the above calculation, the expressions are less than 7/8 are

option a) a) 7/8 x 9/15 and b) 7/8 x 3/4

6 0
3 years ago
Jose swims 3 laps in a pool every 2 minutes how long would it take jose to swim 27 laps
kozerog [31]

Answer:

18 minutes

Step-by-step explanation:

It takes jose 2 minutes for 3 laps, so for 27 laps he would need 2*9 minutes.

8 0
3 years ago
I need help. Please answer if u do know
monitta

Answer:

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3 years ago
Simplify the equations: -3(-2h+-3)
Alex17521 [72]

Answer:6h+9

Step-by-step explanation:

-3(-2h-3)

Open the brackets

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Step-by-step explanation:

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