f(x)= 3x² +x-2, then f(-2)

Answers

Answer 1

Answer:

12

Step-by-step explanation:

just substitute the value in the equation


Related Questions

Plot the x- and y-intercepts to graph the equation.
Y =
= 1x – 1

Answers

Answer:

plot points (0, -1) and (3, 0)

Step-by-step explanation:

compare the given equation to

y=mx +b where b is the y-intercept

y= 1/3 x -1 so thhe y-intercept is at point (0, -1)

to find the x-intercept make y=0

x/3  -1 =0

x/3  =1

x= 3 so x-intercept is at point (3, 0)

the perimeters of two squares are in the ratio 2 : 7. What is the ratio of the area of the smaller square to the area of the larger square

Answers

The ratio of the area of the smaller square to the area of the larger square, that have a perimeter ratio of 2:7 is 4:49

What is the ratio of the area given the ratio of the perimeters of the squares?

The ratio of the perimeter of the squares = 2 : 7

Required: The ratio of the area of the smaller square to the larger square.

Solution: The perimeter of a square of side x is 4•x

The comparative length of the side of each square are therefore;

2/4 and 7/4

The comparative area are therefore;

(2/4)² and (7/4)²

The ratio of the areas of the square is therefore;

(2/4)² : (7/4)² = 1/4 : 49/16

Multiplying both sides of the ratio by 16 gives;

16×1/4 : 16×49/16

4:49

The ratio of the area of the smaller square to the area of the larger square is 4 : 49

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HARD QUADRATICS!!!! A quadratic of the form $-2x^2 + bx + c$ has roots of $x = 3 + \sqrt{5}$ and $x = 3 - \sqrt{5}.$ The graph of $y = -2x^2 + bx + c$ is a parabola. Find the vertex of this parabola.

Answers

Answer:

hold up this will take a min to work out

Step-by-step explanation:

HELP ASAP!
Write an inequality that would have the solution shown
on the graph.

Answers

-6 less than equal to x less than 4

What is the equation of the line that passes
through the points (2, 2) and (4, - 7)?

Answers

Answer:

y=−9/2x+11

Step-by-step explanation:

57.42
A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds.
What is the acceleration?
-13 m/s2
0-6 m/s2
6 m/s2
13 m/s2

Answers

Hi there!

[tex]\large\boxed{a = 6 m/s^{2}}[/tex]

Use the kinematic equation to solve for acceleration:

[tex]a = \frac{v_{f}-v_{i}}{t}[/tex]

Where:

vf = final velocity

vi = initial velocity

t = time

Plug in the given values:

[tex]a = \frac{65-35}{5}\\\\a = 30 / 5 \\\\=6 m/s^{2}[/tex]

Question1Circle A has a diameter of 9 cm. Circle B has a radius of 5 cm. Circle has the larger circumference by centimeters. Use LaTeX: \pi=3.14,Question2 A circle's circumference is approximately 44 cm. Complete each statement using one of these values: 7, 11, 14, 22, 88,138, 154, 196, 380, 616.


a. The circle's diameter is approximately cm.


b. The circle's radius is approximately cm.


c. The circle's area is approximately cm2.

Answers

Answer:

1.) CIRCLE B

2.) 14 cm ; 7cm ; 154cm²

Step-by-step explanation:

Given that:

CIRCLE A:

Diameter (d) = 9cm

CIRCLE B:

Radius (r) = 5cm

Circumference of circle A:

Radius (r) = diameter / 2

C = 2 * pi * r = 2 * 3.14 * (9/2) = 28.26 cm

Circumference of Circle B:

C = 2 * pi * r = 2 * 3.14 * 5 = 31.4 cm

CIRCLE B has the larger Circumference.

2.) circle with Circumference (C) = 44cm

Diameter of circle ;

C = 2 * pi * (d/2)

44 = 2 * 3.14 * (d/2)

44 = 6.28d / 2

88 = 6.28d

d = 14.01 = 14.0 cm ( 1 decimal place)

B.) Circle's Radius

Radius = diameter / 2

Radius = 14.0 / 2 = 7 cm

C.) Area (A) of the circle :

A = pi * r^2

A = 3.14 * 7^2

A = 3.14 * 49

A = 153.86

A = 154 cm²

I need helpp please​

Answers

Answer:

A, 0.07 x 0.06 =0.42.

Step-by-step explanation:

Which answer choice do I pick?

Answers

Answer:

D. f(x) = 8x

Step-by-step explanation:

At each increasing x point, the y point increases by 8, this means that for each x increasing by 1, y increases by 8, which means y = 8x

Answer:

Fourth choice, f(x) = 8x

Step-by-step explanation:

y is going up or down and x is left or right, u riht the slope like y/x

so it's going up 8 units every 1 unit it goes to the right so it's 8/1 which is 8 so 8 is ur slope

Whats The Answer Marking Brainliest, Please explain your answer:D.......

Answers

Answer:

D

Step-by-step explanation:

D is the only answer given as a ratio, the rest are not.

Answer:

D

Step-by-step explanation:

It is given in ratio and looks correct.

Find the value of x + 3.
X + 3
18 cm
2x - 4

Answers

Answer:

B. 14

Step-by-step explanation:

Those little lines on the sides of the triangles shows you which side is congruent to which, so x + 3 is congruent to the other triangle side which one small line, and 18cm and 2x - 4 is congruent.

2x - 4 = 18

add 4 to both sides

2x = 22

divide by 2

x = 11

Replace the x with 11

x + 3

11 + 3

14

PLEASE HELP FAST I WILL GIVE EXTRA POINTS! Make sure you read the question!

Answers

Answer:

c

Step-by-step explanation:

for geometry help thanks <33

Answers

Answer:

12

Step-by-step explanation:

Find the range of the following set of data:12,2,14,80,100

Answers

Answer: 98

Step-by-step explanation: Subtract the biggest number from the smallest. 100-2=98

Answer:

Range of data =Highest data_ lowest data =100_2=98The range of data is 98.

Step-by-step explanation:

I hope l helped you. Please follow me. ❤❤❤❤

Find the slope of the line satisfying the given conditions

a) through (-3,4) and (2,-8)

b) through (5,-3) and (1,-7)​

Answers

Answer:

a) The slope of the line is [tex]-\frac{12}{5}[/tex]

b) The slope of the line is 1

Step-by-step explanation:

The rule of the slope of a line that passes through points (x1, y1) and (x2, y2) is m = [tex]\frac{y2-y1}{x2-x1}[/tex]

a)

∵ The line passes through points (-3, 4) and (2, -8)

∴ x1 = -3 and y1 = 4

∴ x2 = 2 and y2 = -8

→ Substitute them in the rule of the slope above to find it

∵ m = [tex]\frac{-8-4}{2--3}[/tex] = [tex]\frac{-12}{2+3}[/tex] =  [tex]\frac{-12}{5}[/tex]

∴ m = [tex]-\frac{12}{5}[/tex]

The slope of the line is [tex]-\frac{12}{5}[/tex]

b)

∵ The line passes through points (5, -3) and (1, -7)

∴ x1 = 5 and y1 = -3

∴ x2 = 1 and y2 = -7

→ Substitute them in the rule of the slope above to find it

∵ m = [tex]\frac{-7--3}{1-5}[/tex] = [tex]\frac{-7+3}{-4}[/tex] = [tex]\frac{-4}{-4}[/tex]

∴ m = 1

The slope of the line is 1

A​ 150-pound person uses 5.1 calories per minute when walking at a speed of 4 mph. How long must a person walk at this speed to use at least 230 ​calories?

Answers

Answer: 45.1 minutes

Step-by-step explanation:

From the question, we are informed that a 150-pound person uses 5.1 calories per minute when walking at a speed of 4 mph. The number of.

minutes that the person must walk at this speed to use at least 230 ​calories will be:

Let the number of minutes to walk be represented by x

(5.1 × x) = 230

5.1x = 230

x = 230 / 5.1

= 45.1 minutes

lebron is comparing flights departing from minneapolis. which 222 ways could lebron find the flight with the fastest average speed? choose 2 answers: choose 2 answers:

Answers

This problem is incomplete, but applying the relation between velocity, distance and time, LeBron could find the flight with the fastest average speed dividing distance by time.

What is the relation between velocity, distance and time?

Velocity is distance divided by time, that is:

v = d/t.

Hence, to find the fastest flight, he needs the highest speed, which is found  dividing distance by time.

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Answer:

Step-by-step explanation:

brainlyyy!!!!!! pls help

Answers

Answer:

2 juices

because 32 is 16 multiplied by 2, so to get the answer, you have to multply everything by two, and sense it does't ask for the amount of ounces, you simply say, to juices

hope i helped......

Answer:

12 OUNCES

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST

What is the number 2.0847 to 2 decimal places?

Answers

Answer:

2.08

Step-by-step explanation:

2.08 is the answer have a wonderful day

In the diagram below, AB || CD, AD || BC, m ABC = 106°, mZVEE = 36° and mCCB= 42°. Find m DEC.

Answers

Answer:

wheres the diagram

Step-by-step explanation:

Two factory plants are making tb panels. yesterday, plant a produced 18,000 panels. two percent of the panels from plant a and 6% of the panels from plant b were defective. how many panels did plant b produce, if the overall percentage of defective panels from the two plants was 3%?

Answers

Plant B produces 6000 panels.

Given that, Plant A produces 18,000 panels out of 2% are defective and 6% of the panels produced by Plant B are defective.

Defective percentage : It is the number of defects divided by the sample size, multiplied by 100. So, if one tool is defective out of a sample size of 1,000, your percent defective is 0.1 percent.

No. of Defective Panels from Plant A + No. of Defective Panels from Plant B = Total No. of Defective panels

Let No. of Panels produced from Plant A = A and No. of Panels produce from Plant B = B

2% of 18000 + 6% of B = 3% of (18000 + B)

360 + 0.06*B = 0.03( 18000 + B)

360 + 0.06* B = 540 + 0.03*B

0.06*B - 0.03B = 540-360

0.03*B = 180

 3B = 18000

B = 6000

CHECK:

2% of 18000 + 6% of 6000 = 360+360 = 720 defectives

18000 + 6000 = 24000

720 out of 24000 = 720/24000 = 72/2400 = 3%

Hence, Plant A produces 18000 panels and 2% of them , or 360, are defective.

Plant B produces 6000 panels and 6% of them,  or 360, are defective.

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What is the first step to isolate the variable term on one side of the equation?

Answers

Answer:

The basic technique to isolate a variable is to “do something to both sides” of the equation, such as add, subtract, multiply, or divide both sides of the equation by the same number. By repeating this process, we can get the variable isolated on one side of the equation.

Step-by-step explanation:

What is the solution to –(6m + 8) = 4(17 – m)?

Answers

-6m - 8 = 68 - 4m

-6m + 4m = 68 + 8

-2m = 76

-2m/-2 = 76/-2

m = -38

What IS 1 + 1 in monkey math?

WILL GIVE BRAINLIEST!!​

Answers

2 of course 1+1=2 ik what your talking ab

x +4/2 = 9
What’s z?

Answers

Answer:

x+4/2=9       x=14

Step-by-step explanation:

14+4=18 and 19/2 is equal to 9. Therefore the answer is 14.

Find the median of the following set of data 12,20,1,20,8

Answers

Answer:

ok, i hate questions like these because i don't want to answer them

Step-by-step explanation:

PLEASE HELP SOON. NO ONE IS ANSWEING ANY OF MY QUESTIONS.

Answers

Answer:

C

Step-by-step explanation:

Which order pair name point F
A(6,6)
B(-6,-6)
C(-6,6)
D(6,-6)

Answers

Answer:

B

Step-by-step explanation:

You move left 6 times which would be -6 and you move down 6 times which would also be -6

What is the sale price

Answers

Answer:

the answer is $24

Step-by-step explanation:

more filler stuff

Answer:

8$

Step-by-step explanation:

to get the answer multiply the orignial price by .75

then subtract that number from the original.

if you dont mind giving a rating on this thanks :)

Can you choose an option and give the working

Answers

Answer:

option B

Step-by-step explanation:

P is currently at a height of 3 cm. in 2 days it'll have grown 2 cm (0.5 x 2), meaning it'll measure 5 cm.

Q is currently at a height of 5 cm. in 2 days it'll have grown 3 cm (1.5 x 2), meaning it'll measure 8cm.

8-5=3

Q will be 3 cm taller than P

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