Select the correct answer for when you evaluate the following function at f(5):

​ f(x)=−x2+2x−1

A
34
B
4
C
-16
D
14

Answers

Answer 1
A because (-5)^2 = 25 + 2(5) =35-1=34
Answer 2
A. 34
f(5)=5^2+2x-1
you replace all x with 5
5^2=25
2(5)= 10
f(5)=25+10-1
f(5)=34

Related Questions

Frankie puts £4000 in a bank account for 5 years with a 7.5% rate of interest. How much will be in the
account at the end of that time?

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Answer:5500

Step-by-step explanation:

Find the area

Please help me thank you!

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Answer:

area = 12

Step-by-step explanation:

−36+x<8?
Need help fast :p

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-36 + x < 8
x < 44
Answer x < 44

Answer:

download my math scanner it's the only math app I know actually works

what is f(x) = 2 ∗ 5−x

Answers

x=10 if you are looking for the x value

Step-by-step explanation:

Someone is visiting a wildlife center to gather information for their term paper. The center has a circular pin with a diameter of 20 meters. What is the approximate area of the pond?

Answers

Answer:

300 meters^2

Step-by-step explanation:

10 meters radius

10^2 x pi is about 100 x 3=300

PLZ HELP I ONLY HAVE 11 points left and I need help with this question plz :( It's URGENT

Answers

Answer:

16 units

Step-by-step explanation:

The y intercept is when the x value is 0

f(0) = 2(0)+8 = 8

The y intercept of f(x) is 8  

g(0) = -8

The y intercept of g(x)  is -8

The distance between f(0) and g(0)

8 - -8 = 8+8 = 16

Please help me now plz I will mark you brainliest

Answers

Answer:

On the circle

Step-by-step explanation:

Because all of the points on a circle are equidistant from the center, if a circle has a radius of 10 then all of the points are 10 units from the center. Using the Pythagorean Theorem, you know that the distance from (4,0) to (-2,8) is:

[tex]\sqrt{(4-(-2))^2+(8-0)^2}=\sqrt{6^2+8^2}=\sqrt{36+64}=\sqrt{100}=10[/tex], meaning that it is on the circle. Hope this helps!

Fernando bought a roll of film with x pictures. He took 12 of them. Which
expression represents the number of pictures left on the roll?

Answers

Answer: x - 12

Step-by-step explanation: X - 12 is the answer because X is the total from before and he took 12 pics

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You have $2000 to invest in an account and need to have $2500 in five years. What annual interest rate would you need to have in order to have this if the amount is compounded monthly?
a) 4%
b) 2%
c) 5%
d) 3%

Answers

Answer:

c) 5%

Step-by-step explanation:

A = $ 2,566.72

A = P + I where

P (principal) = $ 2,000.00

I (interest) = $ 566.72

Denise calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle is it? (4 points) Four triangles are shown. Triangle A has three equal sides, and two sides are marked 4 and 4. Triangle B has sides marked 3 and 5. Triangle C has sides marked 4 and 5. Triangle D has sides marked 2 and 4 and a right angle marked in between them.

Answers

Answer:

D

Step-by-step explanation:

Answer:

The answer is triangle D because you can only apply the Pythagorean Theorem to right triangles

Which of the following are equations for the line shown below? Check all that apply . will give brainliest for correct answers ​

Answers

Answer: The answer is  A AND B so give me brainliest

Step-by-step explanation:

Simplify the complex fraction.
Alw
2 3/4 1 1/8

Answers

Answer:

= 99/32

Step-by-step explanation:

2 3/4 1 1/8

= 11/4 * 9/8

= 99/32

WILL GIVE BRAINLIEST PLEASE HELP!

Answers

Answer:

A. is 5. B. is 1.C. is 4.D. is 2.E. is 3.F. is 6.

Step-by-step explanation:

Slope is rise over run.

For example, 2 is equivalent to 2/2 so you find the graph that has a point at (2, 2).

Hope this helps :D

if the probability that is will rain is 0.7 what is the probability that it will not rain?

Answers

Answer: I think it's 0.3

Answer:

30 %

Step-by-step explanation:

if the probability that it will rain is 0.7, there is a 0.3 or 30 % chance that it will not rain.

A block of wood has a mass of 6.0 g and a volume of 12.0 cm^3 . What is the density of the block of wood?

0.5 g/cm^3

2.0 g/cm^3

0.2 g/cm^3

2.5 g/cm^3

Answers

Number 1 or also called a half

Answer: Density = 0.5 g/cm³

Explanation: Density is the ratio of mass per unit volume or D = m/V

D = m/V

= 6 g / 12 cm³

= 0.5 g / cm³

Ernesto wants to buy a snack from the vending machine. The vending machine has 5 different kinds of chips, 8 different candy bars, and 2 different kinds of cookies. If he chooses one at random, what is the probability that it is a cookie?

Answers

Answer:

The probability that it is a cookie is   [tex]\frac{2}{15}[/tex]

Step-by-step explanation:

To find the probability  that it is a cookie if he chooses one at random;

probability = required outcome / all possible outcome

The all possible outcome will be gotten by adding up all the snacks. that is;

required outcome = 5 + 8 + 2 = 15

The required outcome is the snack he chooses, that is; required outcome = 2

Probability (of choosing a cookie) =required outcome / all possible outcome

                                                         =[tex]\frac{2}{15}[/tex]

Therefore, the probability that it is a cookie is   [tex]\frac{2}{15}[/tex]

                                                           

                                 

A cylinder has a base radius of 4m and a height of 6m. What is its volume in cubic m,
to the nearest tenths place?​

Answers

Answer:

301.4

Step-by-step explanation:

Volume of a cylinder=pi*[tex]r^{2}[/tex]*h.  Assuming you want 3.14 for pi, we can substitue the 4m for r, 6 for h and 3.14 for pi.

V=3.14*[tex]4^{2}[/tex]*6

V=301.44

Since you want to round to nearest tenths, the answer is 301.4

The volume of the cylinder with the given value of radius and height to the nearest tenth place is 301.4 cubic meters.

What is a cylinder?

A cylinder is simply a 3-dimensional shape having two parallel circular bases joined by a curved surface.

The volume of a cylinder is expressed as;

V = π × r² × h

Where r is radius of the circular base, h is height and π is constant pi ( π = 3.14 )

Given the data in the question;

Radius r = 4mHeight h = 6mVolume of the cylinder V = ?

We substitute our values into the expression above.

V = π × r² × h

V = 3.14 × (4m)² × 6m

V = 3.14 × 16m² × 6m

V = 301.4m³

The volume of the cylinder with the given value of radius and height to the nearest tenth place is 301.4 cubic meters.

Learn more on volume of cylinder here: https://brainly.com/question/16788902

pls help would mean alott if you can!
due rnnnn

Answers

Answer:

4,000

Step-by-step explanation:

How many leaves on a tree diagram are needed to represent all possible
combinations tossing a coin 5 times?
A. 36
B. 16
C. 32
D. 10​

Answers

Answer: C 32

Step-by-step explanation:

Answer:

C 32

Step-by-step explanation:

the length of the side of a square is equal to the perimeter of the square divided by four.
which shows the correct graph relating the perimeter of a square on the x-axis to the side of a square on the y axis

Answers

Answer:

The last image (The one going through points (4,1) and (8,2))

Step-by-step explanation:

If the side length is y, and the perimeter is x, x is equal to that value times 4. This means the table of points would look like this:

x     y

4     1

8     2

12    3

And so on. The only graph that is going through these points is the last one. The third graph is wrong because it's the opposite, (1,4) instead of (4,1), and the perimeter will be greater than the side length.

number 19 very much need the answer please

Answers

Answer:

D not possible.........

Boris is ordering supplies for his company. He ordered 25 boxes of pencils and 40 boxes of pens. What is the ratio of boxes of pens ordered to boxes of pencils ordered?

Answers

Answer:

8:5

Step-by-step explanation:

40:25 can be simplified by diving by 5. You get 8:5 for the ratio of the number of boxes of pens to the number of boxes of pencils, and the ratio cannot be reduced any more from here.

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Answer:

1. C) quadratic

2. b) exponential

Step-by-step explanation:

Find the slope and the y-intercept, then write the equation for the line in slope intercept form ?

Answers

Answer:

Slope: 1/3

Y-Intercept: (0,7)

Equation: y = 1/3x + 7

Step-by-step explanation:

If you find a point on the line, you can find the slope by counting the distance from the y-intercept.

A diver dives to 50 feet in 10 minutes, stays there for 30 minutes, and then resurfaces in 10 minutes. Click on the graph until the graph that best represents the given statement appears.

Answers

Answer:

50x5

Step-by-step explanation:

The question is an illustration of a distance-time graph.

From the question, we have the following highlights

The distance in the first 10 minutes is 50 feet. i.e. (10, 50)He stays at 50 feet for 30 minutes i.e. (40, 50)Then comes out after 10 minutes i.e. (50, 0)

The graphs are not given, so I will attach the graph that represents the scenario.

See attachment for the graph that answers the question.

Read more about distance-time graphs at:

https://brainly.com/question/19836052

The scale drawing of a rectangular room measures 10cm long by 6cm wide. The actual width of the room is 9 metres. What is the actual perimeter of the room, in metres?

Answers

Answer:

48 meters

Step-by-step explanation:

The first thing is to calculate the scale, since we know both widths it is possible:

we pass the 9 meters to centimeters = 900 cm

900/6 = 150

So the scale would be 1: 150

Which means that the length is 150 times bigger.

10 * 150 = 1500cm or what equals 15m

the perimeter is the sum of all the sides, therefore:

P = 15 + 15 + 9 + 9

P = 48

Which means that the perimeter of the room is 48 meters

Value of x explain how you found the value of x

Answers

Answer:

A) 25

Step-by-step explanation:

Set the ratios. Place the similar sides equal to each other.

Sides:

AB/CB = XY/ZY

Plug in corresponding numbers to the corresponding sides:

50/40 = x/20

Simplify. Divide 2 from both the numerator and denominator of the first fraction to get common denominators:

(50/40)/(2/2) = 25/20

25/20 = x/20

x = 25

A) 25 is your answer.

~

Answer: A 25

Step-by-step explanation:

A fountain is made up of two semicircles and a quarter circle. Find the perimeter of the fountain. Round answers to nearest tenth. The diameter for the semicircles is 10

Answers

Answer:

39.275

Step-by-step explanation:

the diameter of the semicircle is 10

A semicircle is half a circle, and a quarter circle is 1/4 of a circle.

Perimeter of a semicircle is ¶d/2

= 3.142 x 10/2 = 3.142 x 5 = 15.71

For 2 semicircles that will be 15.71 x 2 = 31.42

For the quarter circle, perimeter is ¶d/4 = 3.142 x 10/4 = 3.142 x 2.5 = 7.855

Total perimeter = 31.42 + 7.855 = 39.275

How do I find the area ?

Answers

Answer:

7.74 cm^2

Step-by-step explanation:

The  length of the side of the square is 3+3 = 6

The area of the square is

A =s^2 = 6^2 = 36

The area of the circle is

A = pi r^2  where the radius is 3

(3.14) 3^2 =28.26

Subtract the area of the circle from the area of the square to get the shaded area

36-28.26 = 7.74 cm^2

HELP ASAP PLEase easy mah

Answers

Answer:

x = 4.0 yd

Step-by-step explanation:

The area of a rectangle is given by

lw = A

11.8x = 47.6

Divide each side by 11.8

11.8x/11.8 = 47.6/11.8

x =4.033898305

To the nearest tenth

x = 4.0

Answer:

algebraic equation; 11.8x = 47.6

width = 4.0

Step-by-step explanation:

solve the algebraic equation to get x, the width.

11.8x = 47.6

divide both sides by 11.8 and you will get 4.0338.....

round off to nearest tenths to remain with 4.0

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