If the function f is given by f(x)=2x2−4, then which of the following represents the value of c such that f(c)=28?

Select one:
A. 0
B. 2
C. 4
D. 8

Answers

Answer 1
i believe the answer is C. 4

Related Questions

-18=d+4 plZ hurry thank you so much have a great day

Answers

Answer:

d = - 22

Step-by-step explanation:

- 18 = d + 4 ( subtract 4 from both sides )

- 22 = d

Posting this here because why not, it's not like anybody will do it.

Answers

Answer:

1. 264

2. degree: 6, term: 3xy^5

3. -60x^3-2x^2+9x

4. 6mn^3-4m

5. 8x^3-4x+2

6. -x^2-6x-13

Step-by-step explanation:

70 pointsss for the correct answer

When the function f(x) is divided by 4x−5, the quotient is 3x^2 −x+3 and the remainder is −2. Find the function f(x) and write the result in standard form.

Answers

Answer:

Step-by-step explanation:

f(x) = (4x-5)(3x²-x+3) - 2

= (12x³-4x²+12x)-(15x²-5x+15) -2

= 12x³ - 19x² + 17x - 17

Harvey and Dona want to test the range of the walkie-talkies they have. They start at Harvey's house and walk away from each other. Harvey goes to the store 4 miles away to the East and Dona goes to the park 5 miles West. How far apart are the walkie-talkies?

Answers

9 miles away from each other


Using the graph, determine the coordinates of the roots of the parabola

Answers

Answer:

two points

Step-by-step explanation:

x intercepts

here are 4 red cards and 8 black cards in a bag. How likely is it that you will randomly draw a blue card?

a
Impossible
b
Unlikely
c
As likely as not
d
Likely
e
Certain

Answers

Answer:

I would say B?

Step-by-step explanation:

Hope this helps (:

A impossible because nowhere does it say there are any blue cards in the bag

In a hostel, 120 students consume 2160 kg of rice per month. How much rice will be consumed by 80 students in a month?

Answers

Answer:

1440kg of rice

Step-by-step explanation:

2160kg/120 students gives 18kg of rice per student per month. Take that

18kg*80people gives you 1440kg of rice for 80 students

How can I factorise expressions

Answers

Answer:

The first step of factorising an expression is to 'take out' any common factors which the terms have. So if you were asked to factorise x² + x, since x goes into both terms, you would write x(x + 1) . This video shows you how to solve a quadratic equation by factoring.

Step-by-step explanation:

a line has this equation:y=1/4x-1. what’s a perpendicular line that goes through (3,-8)

Answers

Answer:

y = -4x + 4

Step-by-step explanation:

y = (1/4)x - 1

m = (1/4)

Slope of the line perpendicular to this line = -1/m = -1 ÷ (1/4)

                                                                      [tex]= (-1)*\frac{4}{1}\\\\=-4[/tex]

(3 , -8)

y - y1 =m(x -x1)

y -[-8] = -4(x - 3)

y + 8 = -4x + 12

    y = -4x + 12 - 8

    y = -4x + 4

The length of two sides of a right triangle are leg:
10 m and hypotenuse: 15 m.
Find the length of the third side.

Answers

Answer:

11.2m

Step-by-step explanation:

Using Pythagoras,

a²+b²=c²

10²+b²=15²

100+b²=225

b²=225-100

b²=125

b=√125

b=11.2m

Plz help due tomorrow if correct ill give brailiest

Answers

c) the left side of the equation should be -15 + 3r after distributing.

8=3a-4 please help quickly plssssssss

Answers

Answer:

a = 4

Step-by-step explanation:

Answer: a=4

Step-by-step explanation:

Someone please help with this math problem!!!

Answers

Answer:

15

Step-by-step explanation:

Hey bebe you lookin good

Lisa is going on a 3 3/4 mile hike. She has already hiked 1 1/4 miles. How many more miles does she have left to hike?

Answers

Answer:

C = 2½ miles.

Step-by-step explanation:

Let the total distance be A

Let the distance covered be B.

Let the unknown distance (distance left) be C.

Given the following data;

A = 3¾ miles

B = 1¼ miles

To find the distance left to hike;

A = B + C

Substituting into the equation, we have;

3¾ = 1¼ + C

C = 3¾ - 1¼

C = (3 - 1) ¾ - ¼

C = 2 2/4

C = 2½ miles.

Method II.

We would convert the mixed fraction into a proper fraction:

A = 3¾ = (4*3 + 3)/4 = 15/4

B = 1¼ = (4*1 + 1)/4 = 5/4

C = 15/4 - 5/4

C = 10/4

C = 5/2

C = 2½ miles.

Katrin is making a poster for school elections. She draws a line 20.4 centimeters long across the poster board. She starts at one end of the line and makes a mark every 3.4 centimeters along it. She plans to write the letters of her name in the spaces between the marks. Will Katrin make enough spaces for each letter of her name to go in one space? Explain how you know.

Answers

I wish I could help, but I do not know. Just trying to get points

leah buys 3 adult and 3 child bus passes for a trip. the costs of an adult pass is a. the costs of a child pass is c. write an expression that will show the costs for all of the bus passes for the trip.​

Answers

Answer:

6

Step-by-step explanation:

The prism shown has a volume of 35 cm.
Work out h, the height of the triangular cross section.
h
7 cm
4 cm

Answers

Answer:

the height is 2.5 cm

Step-by-step explanation:

The computation of the height of the triangular section is shown below:

As we know that

Volume = One-half × base × height

35 = One-half × 4 × height × 7

So, the height is 2.5 cm

Answer:

Height = 2.5cm

Step-by-step explanation:

Volume = Base(b) x Height(h) x Length(l) / 2

Substitute the information that you have into the equation

Volume = 4 x Height(h) x 7 / 2

Height = 4x7 / 2

= 14cm

35 / 14

= 2.5cm

can someone plz do both of these will mark brainleist

Answers

Answer:

Step-by-step explanation:

2.b=90

1.30

Answer:

Step-by-step explanation:

6. You're gonna use Cos to find Y

Cos = adj/hyp

Cos 27 = 10/y

10/cos27 = y

11.2 = y

7. It'll help immensily if you draw this one out.

You're gonna use Sin to find the angle.

Sin = opp/hyp

Sin 65 = 14/x

14/sin65 = x

15.4 = x

For each of the following, select the correct words from the word bank to complete each statement.
Angles opposite one another that share a vertex are called
Answer
angles. When one of these angles undergoes a rigid transformation so that it fits exactly over the other, we know that the typ angles are
Answer
When two parallel lines are crossed by another line called the
Answer
the angles created inside the parallel lines but on opposite sides of the crossing line are called
Answer
Answer
angles. Angles of this type have the same measurement as one another. Two figures are
Answer
if one can fit exactly over the other after rigid transformations and dilations.
corresponding
vertical
image
congruent
trasmission
transversal
perpindicular
alternate
exterior
interior
dissimilar
similar

Answers

Answer:

Angles opposite one another that share a vertex are called vertical angles.

When one of these angles undergo a rigid transformation so that it fits exactly over the other, we know that the two angles are congruent

When two parallel lines are crossed by another line called the transversal the angles created inside the parallel lines but on opposite sides of the crossing lines are called alternate interior angles. Angles of this type have the same measurement as one another. Two figures are similar if one can fit exactly over the other after rigid transformations and dilations

Step-by-step explanation:

Vertically opposite angles are always equal (congruent)

The transversal line is the line that crosses two or more parallel lines

Alternate interior angles formed by two parallel lines crossed by a common transversal, are congruent

Two plane geometric figures are similar if they their corresponding interior angles are congruent

One of the students is chosn at random. What is the probability of picking a student who sciored above 65

Answers

Answer: 7 / 18

Step-by-step explanation:

There were 18 students.

Out of them, the scores above 65 are:

73, 73, 69, 68, 71, 76, 70

There are 7 of them.

Probability of picking someone who scored higher than 65 is:

= Number of people who scored above 65/ Total number who took the test

= 7 / 18

i just need the answer lol

Answers

Answer:

C and D

Step-by-step explanation:

They are both roots of the equation.

hi does 1/6 -3 √7, -6/5 come first when the numbers are listed from least to greatest​

Answers

Answer:

I think Yes im not exactly sure

Step-by-step explanation:

Please help with this question:
Tell whether a triangle can have the sides with the given lengths 12, 13, and 24

Answers

Answer:

yes

Step-by-step explanation:

as long as the two shortest sides add up to more than the longest side then a triangle can be made with those side lengths

PLEASE HELP! I REALLY NEED THESE ANSWERS!
A right triangle is formed in the first quadrant by the x- and y- axes and a Straight line through the point (2,3). The other vertices are (0,0) (0,Y) (X,0).

a) Write the length L of the hypotenuse as a function of x
b) Find the vertices of the triangle such that its are is a minimum

Answers

Answer:the triangle has (2,) and (0, 4) as its vertices for a maximum area

Step-by-step explanation:let P(x,0) be the x-intercept and Q(0,y) be the y-intercept

label (1,2) as A(1,2)

the slope AP = slope AQ

-2/(x-1) = (2-y)/1

2x - xy - 2 + y = -2

y(1-x) = -2x

y = -2x/(1-x) or 2x/(x-1)

H^2 = x^2 + y^2

= x^2 + ( (2x/(x-1) )^2 --- simplify if needed

(don't know why we are finding the hypotenuse ? )

Area of triangle OPQ

= (1/2)base x height

= (1/2)xy

= (1/2)x(2x/(x-1))

= (1/2) (2x^2/(x-1) )

dA/dx = (1/2) [ (x-1)(4x) - 2x^2(1) ]/(x-1)^2

= (1/2) [ 4x^2 - 4x - 2x^2 ]/(x-1)^2

= 0 for a max of A

2x^2 - 4x = 0

x(2x-4) = 0

x=0 ---- > makes no sense, look at diagram

or

x = 2

then y = 2(2)/(2-1) = 4

the triangle has (2,) and (0, 4) as its vertices for a maximum area

Answer:

Heyyyy

Step-by-step explanation:

i’m stuck on these questions

Answers

Answer:

In my opinion both of the lines are tangent.

Step-by-step explanation:

Because a tangent to a circle is a straight line which touches the circle at only one point. This point is called the point of tangency. The tangent to a circle is perpendicular to the radius at the point of tangency.

In order to raise money for road repairs, the bridge toll is going to increase 130% next month. If the bridge toll is currently $2.50, how much will the toll be after the increase?

A.$0.75

B. $3.25

C. $4.80

D. $5.75

Answers

B, just multiply 130% by 2.50

HELP

Observe the graph below.

The graph shows a ___ function that is asymptotic to ____

Answers

Answer:

The graph shows a LOGARITHMIC function that is asymptotic to X=1

Step-by-step explanation:

Adrian purchased a new car in 1990 for $24,900. The value of the car has
been depreciating exponentially at a constant rate. If the value of the car was
$13,500 in the year 1994, then what would be the predicted value of the car
in the year 1999, to the nearest dollar?

Answers

Answer:

Multiply it by 4 and divide it by 100.  It should be1,100. Now multiply it by12. it should be 13200 . Now subtract that to the original price.  14300

Step-by-step explanation:

PLEASE rate follow and thank

Answer: 6281

Step-by-step explanation:

what is 10 to the 100th power

Answers

Answer:

EZ!!! 1e+100

Step-by-step explanation:

Multiply and simplify. Plz show work!
(3x − 2)(5x^2 − 7x + 2)

Answers

Answer:

15^3−31^2+20−4

Step-by-step explanation:

Distribute

(3−2)(5^2−7+2)

3(5^2−7+2)−2(5^2−7+2)

Distribute

3(52−7+2)−2(5^2−7+2)

15^3−21^2+6−2(5^2−7x+2)

Distribute

15^3−21^2+6−2(5^2−7+2)

15^3−21^2+6−10^2+14−4

Combine like terms

15^3−21^2+6−10^2+14−4

15^3−31^2+6+14−4

Combine like terms

15^3−31^2+6+14−4

15^3−31^2+20−4

Solution

15^3−31^2+20−4

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