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4 years ago

Sum of 2x 2 + 3x - 4, 8 - 3x, and -5x 2 + 2.

1 answer:

5 0

(2x² + 3x - 4) + (8 - 3x) + (-5x² + 2)

= 2x² + 3x - 4 + 8 - 3x - 5x² + 2

= -3x² + 6

= 3(-x² + 2)

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Ok, so I'm pretty sure this one is 11.5 I just wanted to make sure with u guys! :)

Furkat [3]

Answer:

C: 23 cm

Step-by-step explanation:

This is the answer because:

1) Area of trapezoid is: (base1 + base2)/2 x height

2) In this case, it is 14 + 8 which is 22. 22/2 is 11.

3) Now we have to do 253/11 which is 23 cm.

Hope this helps! :D

4 0

3 years ago

Read 2 more answers

Given that f(x) = x2 + 1 and g(x) = -3, multiply the functions (gºf)(x).

stich3 [128]

Answer:

$(g\cdot f) = -3x^2-3$

Step-by-step explanation:

$f(x) = x^2 + 1$

$g(x) = -3$

The problem state to multiply the function $f$ and $g$ so the symbol seems to be incorrect.

We actually want to calculate

$g(x) f(x) =gf(x) = (-3) \cdot (x^2+1)= -3x^2-3$

Note

$g\circ f(x)=g(f(x))=g(x^2+1)=-3$

3 0

3 years ago

5. Write equations in slope-intercept form for three different lines that intersect at (–2, 3). Show your work.

bixtya [17]

Answer:

Equations in slope-intercept form for three different lines that intersect at (–2, 3) are y=-x+1 , y=3 and y=x+5

Step-by-step explanation:

General equation of slope intercept form : $y-y_1=m(x-x_1)$

We are supposed to find equations in slope-intercept form for three different lines that intersect at (–2, 3).

$(x_1,y_1)=(-2,3)$

Substitute the value in the general equation

y-3=m(x+2)

Now substitute any 3 values of m

At m = -1

$\Rightarrow y-3=-x-2 \\\Rightarrow y=-x+1$

At m =0

$\Rightarrow y-3=0 \\\Rightarrow y=3$

At m =1

$\Rightarrow y-3=x+2 \\\Rightarrow y=x+5$

They all intersect at the given point.

So, equations in slope-intercept form for three different lines that intersect at (–2, 3) are y=-x+1 , y=3 and y=x+5

3 0

3 years ago

Someone please help me! Show all work to factor x4 − 5x2 + 4 completely.

MakcuM [25]

Step-by-step explanation:

=>x⁴-5x²+4

=>x⁴-x²-4x²+4

=>x²(x²-1)-4(x²-1)

=>(x²-1)(x²-4)

=>(x+1)(x-1)(x+2)(x-2)

hope this helps you.

4 0

3 years ago

Helpppppp! No links please, thank you!

sveta [45]

32, 60, 68

Hope this helps

4 0

3 years ago