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2 years ago

If f(x) = 4x² + 1 and g(x)=x2-5, find (f- g)(x).

Mathematics

1 answer:

Nadya [2.5K]2 years ago

8 0

Answer:

Option A is correct.

3x^2+6

Step-by-step explanation:

We have to find (f-g)(x):

We can write it f(x)-g(x), so substitute the values:

f(x)-g(x)=(4x^2+1)-(x^2-5)

=4x^2+1-x^2+5

=3x^2+6

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Hey can you please help me posted picture of question

nirvana33 [79]

(8x^2+2x+8)+(3x^3+7x+4)=
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3x^3+8x^2+9x+12

Answer: Option A. 3x^3+8x^2+9x+12

8 0

2 years ago

Read 2 more answers

What’s the midpoint P(0,-2), Q(1,1

LiRa [457]

You would have to add x1 + x2 and divide by 2. do the same with y1 and y2.

(1/2,-1/2)

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2 years ago

A 5-meter ladder is leaning against the side of a house. The foot of the ladder is pulled away from the house at a rate of 0.4 m

Flura [38]

<h2>The top of the ladder is descending at 0.3 m/s.</h2>

Step-by-step explanation:

By Pythagoras theorem we know that

Hypotenuse² = Base² + Perpendicular²

h² = b² + p²

We have for ladder

h = 5 m

b = 3 m

5² = 3² + p²

p = 4 m

$\frac{db}{dt}=0.4m/s\\\\\frac{dh}{dt}=0$

Differentiating h² = b² + p² with respect to time

$2h\times \frac{dh}{dt}=2b\times \frac{db}{dt}+2p\times \frac{dp}{dt}\\\\5\times 0=3\times 0.4+4\times \frac{dp}{dt}\\\\\frac{dp}{dt}=-0.3m/s$

The top of the ladder is descending at 0.3 m/s.

3 0

3 years ago

Find the area of the triangle

Tasya [4]

Answer:

I think it's 36 from top to bottom

Step-by-step explanation:

and pls ask a real question, or ask more with info

4 0

2 years ago

B + 12 = 16; 2, 3, 4

Molodets [167]

Answer:

Step-by-step explanation:

b+12 =16

-12. -12

b = 4

hope this helps

5 0

3 years ago