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Sedaia [141]
3 years ago
14

Given the function f(x) = 3x2 − 4, what is f(-2)? A. -40 B. -16 C. 8 D. 32

Mathematics
2 answers:
adoni [48]3 years ago
8 0
^^ correct! It would be 8! Your answer is C.
Temka [501]3 years ago
3 0

All this is asking you to do is plug in -2 for x

So

f(x)=3x²-4

f(-2)=3(-2²)-4

f(-2)=12-4

f(-2)=8

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How to do this problem because it's hard
Elenna [48]
You will need to set up and solve 2 equations:
A) 3 Vans + 10 Buses = 379
B) 14Vans + 13 Buses = 624
Multiply equation A by -14
A) -42 Vans -140 Buses = -5,306  then Multiply equation B by 3
B) 42 Vans + 39 Buses = 1,872
Adding BOTH equations
-101 Buses = -3,434
Each Bus holds 34 Students

Putting this into equation A
A) 3 Vans + 10 Buses = 379
A) 3 Vans + 10 * 34 = 379
A) 3 Vans +340 = 379
A) 3 Vans = 39
Each van = 13 students




4 0
3 years ago
What is the length of segment AD? Round your answer to the nearest hundredth. triangles ABC and ABD in which the triangles share
igomit [66]

Answer: 5.83 units

Step-by-step explanation:

Sketching the data above,

Length of segment AD can be computed using Pythagoras rule ;

Where segment AD = hypotenuse

Segment AB = 3 = opposite

Sin Θ = opposite / hypotenuse

Sin 31° = 3 / hypotenuse

Hypotenuse × 0.5150380 = 3

Hypotenuse = 3 / 0.5150380

Hypotenuse = 5.8248120 units

Hypotenuse = 5.83 units

3 0
4 years ago
Read 2 more answers
What are the x-intercepts of the following graph?
pychu [463]

Answer:

c (2,0) and (-2,0) I hope ot helps

8 0
2 years ago
Claire walked her dog 2 1/5 miles. Carson walked her dog 1 3/4 times as far as Claire did. How many more miles did Carson walk h
Anon25 [30]

The word "times" means you have to multiply.

2 1/5 times 1 3/4 is 3 17/20.

The phrase "how many more" means you have to subtract.

3 17/20 minus 2 1/5 is 1 13/20.

Carson walked her dog 1 13/20 more miles than Claire did.

Sorry for the lazy explanations Imao

6 0
3 years ago
1/2 of 2/3 = 1/2 of ____ third(s) =____third(s)
adoni [48]
I'll write the equation again with the blanks filled in.

1/2 of 2/3 = 1/2 of two thirds = one third

2/3 is read as two thirds.

Half of 2/3 is 1/3, because 1/3+1/3=2/3

Hope this helps!
6 0
3 years ago
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