What is f(−1) for the function given? f(x)=x2−3x+8

Answers

Answer 1

Answer:

12

Step-by-step explanation:

I am assuming you are asking for f(x)=x^2-3x+8? You plug (-1) in for all portions of x. This means you get (-1)^2-3(-1)+8. (-1)^2 is simply 1 because -1 x -1=1. 3*-1 is -3. This makes the equation 1 - (-3) + 8. The middle section simplifies down to +3 making it 1+3+8, or 12.


Related Questions

The area of Isaiah's bedroom is 13 1/3 square yards. His bed's area is 2 2/3 square yards. Find the unit rate and explain, in words, what it means in the context of this problem.

Answers

Answer:

5

Step-by-step explanation:

Area of bedroom = 13 1/3 square yards

Area of bed = 2 2/3 square yards

Unit Rate = Area of bedroom / Area of bed

Unit Rate = (40 / 3 ÷ 8/3)

Unit Rate = 5

what answee is it?? :))))

Answers

Step-by-step explanation:

The answer is C

We can easily eliminate B and D since Ms. Macdonald isn't starting with 3 rabbits.

We can also eliminate choice A, because 5 to the 3rd power isn't 15.

5 to the 3rd power is 125, therefore the choice is C


question 1: The bank agrees to give you a loan of $4,000 with 1% simple interest over 2 years. How much will your monthly payments be?

question 2: The bank agrees to give you a loan of $3,000 with 2% simple interest over 1 year. How much will your monthly payments be? ​​

Answers

Answer:

Its below

Step-by-step explanation:

1. 2000

2. 233

The costs of cookies at store A shown in the graph. The cost y for x cookies at store B is represented by the equation y = 0.30x. Which of the following statements is true?

Answers

Answer:

H

Step-by-step explanation:

Declan wants to mail 28 drawings to his Grandma. If he can fit 3 drawings in each envelope, how many envelopes will he need to mail all the drawings

Answers

Answer: 10 envelopes

Explanation: 28÷3=9.33
Now, I am assuming you can't have 9 1/3 envelopes, so I rounded up (which makes the answer 10).

Answer:

10 envelopes

Step-by-step explanation:

What we know:

- There are 3 drawings for each envelope

- There are 28 drawings in total

To find out the number of envelopes Declan would need, we divide 28 by 3 (check the picture attached).

28÷3=9 R1

28 divided by 3 gives us 9 with a remainder of 1, which means if Declan had 9 envelopes, he would be able to fit 3 drawings in each with 1 drawing left over. He would need a 10th envelope to use for the last drawing.

Therefore, Declan would need 10 envelopes to mail all the drawings to his grandma.

I hope this helps! Happy holidays :)

If 2 bushels of corn weigh 112 lb, how much do 8.5 bushels of corn weigh?

Answers

Answer:

476 lb

Step-by-step explanation:

112/ 2 = 56

8.5 times 56

What is the y-component of vector v?
O y=-3
Oy=-4
O y=-20
O y=4

Answers

Answer:it’s the second one

Step-by-step explanation:

B) y = –4

It is indeed correct on Edge

In AWXY, X = 1.2 cm, ZX=45° and Y=108°. Find the length of w, to the nearest 10th

Answers

Answer:

The length of w is 0.8 cm

Step-by-step explanation:

In Δ WXY

x is the opposite side to ∠X

w is the opposite side to ∠W

y is the opposite side to ∠Y

∵ m∠X = 45°

∵ m∠Y = 108

∵ The sum of the measures of the interior angle of a triangle is 180°

45 + 108 + m∠W = 180

→ Add the like terms in the left side

∵ 153 + m∠W = 180

→ Subtract 153 from both sides

m∠W = 27°

Now we can use the sine rule to find the length of w

∵ [tex]\frac{w}{sin(W)}[/tex] = [tex]\frac{x}{sin(X)}[/tex] = [tex]\frac{y}{sin(Y)}[/tex]

→ Use the first 2 ratios to find w

∵ x = 1.2 cm

∵ [tex]\frac{w}{sin(27)}[/tex] = [tex]\frac{1.2}{sin(45)}[/tex]

→ By using cross multiplication

w × sin(45) = 1.2 × sin(27)

∴ w sin(45) = 1.2 sin(27)

→ Divide both sides by sin(45)

w = 0.7704474263

→ Round it to the nearest tenth

w = 0.8 cm

The length of w is 0.8 cm

2. Find m21.
39°
1
30°
860

Answers

Answer:

∠ 1 = 69°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ 1 is an exterior angle of the triangle, thus

∠ 1 = 39° + 30° = 69°

Gary Sanchez struck out 112 times in 350 at bats. What PERCENTAGE of his at-bats were strike outs?

Answers

Given :

Gary Sanchez struck out 112 times in 350 at bats.

To Find :

Percentage of his at-bats were strike outs.

Solution :

We know, percentage hits is given by :

[tex]Percentage = \dfrac{\text{Number of time bats were strike out}}{\text{Total number of bats}}\times 100 \ \%[/tex]

Putting all given values in above equation, we get :

[tex]Percentage = \dfrac{112}{350}\times 100\ \%\\\\Percentage = 32\ \%[/tex]

Hence, this is the required solution.

What is the solution set of (x-2)(x-3) = 2?
O (1.4)
O (2, 3)
O [4,5)

Answers

the answer is x1 = 1 , x 2 = 4.
(1,4)

Answer:

I think A but i'm not sure

Step-by-step explanation:

select the correct answer consider these functions f(x)=3x-7 g(x)=X +1/x-1 what is the value of f(g(3))

Answers

Answer:

Me and my massive brain, among other massive things of mine, believe it to be -1

Step-by-step explanation:

The value of the function F(g(x) will be equal to (7 / 2).

What is a function?

A function is defined as the expression that set up the relationship between the dependent variable and independent variable.

Given functions are:-

f(x)=3x-7 g(x)= x +(1/x-1)

The function F(g(x) is written as :-

F(g(x) = 3 [ x + ( 1 / ( x-1 )) -7 ]

F(g(x) = 3 [ (3 + (1/2) - 7 ]

F(g(x) = 3 (7 / 2 ) -7

F(g(x) = ( 21/2) - 7

F(g(x) = ( 21-14 ) ( 2 )

F(g(x) = ( 7/2 )

Therefore the value of the function F(g(x) will be equal to (7 / 2).

To know more about function follow

https://brainly.com/question/25638609

#SPJ2

Given vectors u = ⟨–3, 2⟩ and v = ⟨2, 1⟩, what is the measure of the angle between the vectors? 7.1° 60.3° 119.7° 172.9°

Answers

Answer:

C) 119.7°

Step-by-step explanation:

got it right on edge :)

aight can you guys help, it’s a one-step equation and i’m smol brain, and can you give me a step-by-step cuz i forgot how to do it, thank youuuuu<3

Answers

Answer:

16

Step-by-step explanation:

The variable a minus 10 equals 6. If you substituted a for 16, and subtracted 10, you'd get 6. Substituting the rest of the numbers and subtracting 10 wouldn't give you 6.

a - 10 = 6
in order to find a, you want to get a alone by itself.
to do that you add 10 to both sides because it can never be just one side
then that will give you a= 10 + 6
which is then a = 16

so your answer is 16

Select the correct similarity statement

Answers

Answer:

what is the question and choices?

Step-by-step explanation:

then maybe I can help

What is the value of a if a is equal to a×a×a=a+a+a

Answers

Answer:

a = ±sqrt(3)

Step-by-step explanation:

a×a×a=a+a+a

Simplifying each side

a^3 = 3a

Divide each side by a

a^3 /a = 3a/a

a^2 = 3

Take the square root of each side

sqrt(a^2) = ±sqrt(3)

a = ±sqrt(3)

Answer:

nope its not equal

a×a×a=a³, but a+a+a=3a

so, a³≠3a

Step-by-step explanation:

i hope this helps....can i have brainliest

MERRY CHRISTMAS!!!......ENJOY UR HOLIDAY!!!

Please help due in 15 min

Answers

4 is 27 because 27/30 is .9 aka 90
First one is the first one 27 problems. Second one is the third one 50%

First method: Multiply the equation for bouquet A by , and add it to the equation for bouquet C. Then multiply the equation for bouquet B by , and add it to the equation for bouquet C. Second method: Rewrite the equation for bouquet B by subtracting from both sides of the equation. Then divide both sides by , and substitute the expression for in the equations for bouquets A and C.

Answers

Answer:

looking at anwser now

Step-by-step explanation:

which ordered pair is a solution for y=x+10

Answers

Answer:

Step-by-step explanation:

Do you have the selection of answers?

a group of biologists is surveying the mice population in a forest. the equation n=75^t gives the total number of mice,n, t years after the survey began. what does the number 3 mean in this situation.

1. the common difference

2. the total population

3. the common ratio

4. the slope

Answers

Complete question is;

A group of biologists is surveying the mice population in a forest. The equation n=75⋅3t gives the total number of mice, n, t years since the survey began.

what does the number 3 mean in this situation.

1. the common difference

2. the total population

3. the common ratio

4. the slope

Answer:

3 is the common ratio

Step-by-step explanation:

We are given that the equation; n = 75⋅3^(t) gives the total number of mice, n, t years since the survey began.

Normally, formula when calculating population growth takes an exponential function;

n = n_o(e^(rt))

Or in this our case, it can be written as;

n = n_o((e^(r))^(t))

Comparing this with n = 75⋅3^(t), we can see that e^(r) = 3

Where r is the growth rate.

e is exponential constant.

Thus, we can say that 3 is the common ratio

Help pleasseeee
If f(x)=3x^2-7x find f(-2)

Answers

Answer:

f(-2) = 26

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 3x² - 7x

f(-2) is x = -2

Step 2: Evaluate

Substitute in x:                    f(-2) = 3(-2)² - 7(-2)Exponents:                          f(-2) = 3(4) - 7(-2)Multiply:                               f(-2) = 12 + 14Add:                                     f(-2) = 26

Solve the equation. Round the answer to the nearest tenth.
5*6^3n=20

Answers

Step-by-step explanation:

5×6'3n=20

30'3n=20

3n=20-30

3n/3= -10/3

n= -3

math help pls!!
i have no clue how to do this

Answers

Answer:

I THINK it's A

Step-by-step explanation:

The circumference of a circular tablecloth is 160 inches, Will the tablecloth cover
a table with diameter 52 inches?

Answers

Answer:

D= 50.92 in

Step-by-step explanation:

Step one:

Given data

The circumference of a circular tablecloth is 160 inches

We want to know if the circular table cloth can also cover a table of diameter 52 in

Step two:

let us solve for the diameter of the table cloth given that the circumference is

160in

circumference

[tex]C= 2 \pi r[/tex]

[tex]160= 2*3.142*r\\\\160= 6.284r[/tex]

divide both sides by 6.284

[tex]160/6.284= r\\\\r=25.46 in[/tex]

The diameter of the table cloth is

[tex]=25.46*2\\\\=50.92 in[/tex]

The Table cloth cannot cover the table because the diameter of the cloth is not up to the diameter of the table

Rewrite the function by completing the square.
f(x) = x^2- 2x - 95

Answers

Answer:(x-1)^2 -96

Step-by-step explanation:

Not sure if this is correct but I included the workings out

I dont understand ratios​

Answers

im too

good luck

im lucky cat

Gab is able to serve 9 serving of penne pasta to 16 people. How many servings does he have to make for a party of 80 people ​

Answers

45 servings for 80 people
45 servings
80 people

Write the expression in simpleist form PLZ WILL GIIVE BRAINLIEST
1 + x + 6x -6
1. 28x - 5
2. 24x - 5
3. 7x - 5
4. 7x - 6

Answers

Answer:

3. 7x-5

Step-by-step explanation:

x+ 6x will make it 7x then -6 plus 1 will make it a -5 so t will be 7x-5.

What is the degree of the polynomial below? it would be 4 right? hi everyone tho :)


x^3 + 2x – 3x^4 + 5 + 3x^2

Answers

Answer:

4

highest power is 4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

| 5t-1 |=6

Show all work

Answers

Answer:

t = 1.4

Step-by-step explanation:

If you multiply 5 and 1.4 together, you get 7. Then, you do 7 - 1, and you get 6.

The inverse operation symbol things don't matter if the answer you get inside the two vertical bars is positive.

Answer: t=1

Step-by-step explanation:

|5t-1 |=6

5t+1=6

5t=5

t=1

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