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nordsb [41]
3 years ago
14

Given that f(x)=2x+1,find g(x) if g(x)=2[f(x)]²-1

Mathematics
2 answers:
uysha [10]3 years ago
8 0
G(x)= 2[2x+1]^2-1. Where f(x) values is 2x+1
= 2[4x^2+4x+1]-1
=8x^2+8x+2-1
=8x^2+8x+1

Hope this helps!
Sergeu [11.5K]3 years ago
7 0
f(x)=2x+1\\\\g(x)=2\left[f(x)\right]^2-1\\\\g(x)=2\cdot(2x+1)^2-1=2\cdot[(2x)^2+2\cdot2x\cdot1+1^2\right]-1\\\\=2\cdot(4x^2+4x+1)-1=8x^2+8x+2-1=8x^2+8x+1

Used:  (a+b)^2=a^2+2ab+b^2
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Which points are on the perpendicular bisector of the given segment? Check all that apply. Please explain how you got your answe
ser-zykov [4K]
First, you have to find the equation of the perpendicular bisector of this given line. 
to do that, you need the slope of the perpendicular line and one point.
Step 1: find the slope of the given line segment. We have the two end points (10, 15) and (-20, 5), so the slope is m=(15-5)/(10-(-20))=1/3
the slope of the perpendicular line is the negative reciprocal of the slope of the given line, m=-3/1=-3 
step 2: find the middle point: x=(-20+10)/2=-5, y=(15+5)/2=10      (-5, 10)
so the equation of the perpendicular line in point-slope form is (y-10)=-3(x+5)

now plug in all the given coordinates to the equation to see which pair fits:
(-8, 19): 19-10=9, -3(-8+5)=9, so yes, (-8, 19) is on the perpendicular line. 

try the other pairs, you will find that (1,-8) and (-5, 10) fit the equation too. (-5,10) happens to be the midpoint. 

4 0
3 years ago
Read 2 more answers
Can somebody please help me figure this out?
Vera_Pavlovna [14]

Answer: You would put the 35° and the 4x+7° equal to each other.

Step-by-step explanation:

    1. 4x+7=35  

    2. 4x+7=35   -> Subtract 7 from the positive 7 and the 35

           -7     -7

    3. 4x=28       -> Divide 4x and 28

    4. x=7

5 0
3 years ago
What is the slope of the line that passes through the points (3, -4) and (7, 4)?
Andrews [41]
The correct option is: Option (C) 2

Explanation:

The slope formula is = m = \frac{y_2 - y_1}{x_2 - x_1}

Insert the values in the above formula:

m = \frac{4 - (-4)}{7 - 3} =  \frac{8}{4} = 2

Which is Option (C).
6 0
4 years ago
3. Find the circumference of a circle that has a diameter of 12. Round to the hundredths. *
mr Goodwill [35]
Answer:
B

I hope this could help you ^^
8 0
3 years ago
A triangular pyramid has a height of 18 yards and a base with an area of 330 square yards. What is the volume of the pyramid?
WITCHER [35]

Answer:

option C. V=1,980\ yd^{3}

Step-by-step explanation:

we know that

The volume of the triangular pyramid is equal to

V=\frac{1}{3}Bh

where

B is the area of the triangular base

h is the height of the pyramid

In this problem we have

B=330\ yd^{2}

h=18\ yd

substitute in the formula

V=\frac{1}{3}(330)(18)=1,980\ yd^{3}

3 0
3 years ago
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