All categories

4 years ago

If f(x)=3x^2-7 , find f(4). Show all work

Mathematics

2 answers:

katrin2010 [14]4 years ago

4 0

Plug in all x's for 4. 4^2 = 16 --> 16x3=48 --> 48-7 = 41
41 is the final answer

vagabundo [1.1K]4 years ago

4 0

f(x)=3x²-7

Simply insert value of x, 4 into the equation then simplify
f(4)=3(4)²-7
=3(16)-7
= 48 -7
= 41

You might be interested in

Fgh is a right triangle

umka21 [38]

Can you clarify or add a picture?

6 0

3 years ago

0.008 is 1 tenth of what decimal

shepuryov [24]

0.08, Hope it helped

3 0

3 years ago

Simplify the radical expression √(5) + 6√(5)

Evgesh-ka [11]

Answer is C) 7√(5)
cause

√(5) + 6√(5)
=√5 (1+6)
= 7√5

8 0

4 years ago

Write an equation in Standard Form using the correct properties. Convert this equation to Slope-Intercept Form.

Lubov Fominskaja [6]

Answer:

I think what you are asking for is an example.

Step-by-step explanation:

Standard form equation

8x-4y = 20

1. move 8x to the other side

-4y=20-8x

2. divide both sides by -4

$\frac{-4y}{-4} = \frac{20-8x}{-4}$

3. Solve for this...

y=2x-5

7 0

3 years ago

Select all angles that MUST be supplementary to 9

erastova [34]

Answer:

Angles supplementary to angle 9 = Angle 10, 7, 5, 1, 4, 3, 15, 12, 24, 22, 20, 19, and angle 16.

Step-by-step explanation:

Use the vertical, and corresponding angles theorem to find congruent angles.

Look for linear pairs (adjacent(next to each other, or share a side) angles that make 180° or a straight angle) from the corresponding angles.

Something is supplementary if it adds to 180 degrees.

The vertical angles theorem states that pairs of opposite angles made by interesecting lines are congruent.

The corresponding angles theorem states that corresponding or angles relative to the same position are congruent if the transversal crosses at least 2 parallel lines.

6 0

3 years ago