Mathematics College

If f(x) =2x²-x, find f(-4)-f(9)​

Answers

Answer 1
f(-4) = 36
f(9) = 153

Related Questions

Question is in the image​

Answers

Answer:

4.

Step-by-step explanation:

y = -2x + 3

-1 = -2(2) + 3

-1 = -4 + 3

-1 = -1

y = x - 3

-1 = 2 - 3

-1 = -1

Find f(-2) for f(x) = 3 • 2x

Answers

Answer:

A

Step-by-step explanation:

2^-2 is -4 I believe and then multiplied by three would be -12

A plumber charges $80 for a house call and $25 per hour for his services. Which of the following is a linear model of his charges.

Answers

Answer:bals

Step-by-step explanation:25(number of hours worked) +80$ for initial charge

Answer:

25x+80

The number of hours is x for services

Add. Express each sum in simplest form : 5/9+1/2

Answers

Answer:

19 /18  or 1 1/18

Step-by-step explanation:

first you need to make the denominators the same

10/18+9/18

then add the numerations together to get

19/18 or 1 1/18

I hoped this helped :)

Write the equation of the line that is parallel to the original equation and passes through the point
(12, 6).

Answers

Answer:

12

Step-by-step explanation:

12 your welcomeeeeee

What is the quotient of 1/10 and 9/10

Answers

Answer:

1/9 = 0.1111111

Step-by-step explanation:

Does this scatter plot show a positive trend, a negative trend, or no trend?​

Answers

it shows a negative trend

Answer:

no trend

a positive trend would start in the bottom left and go toward the top right

a negative trend would start at the top left and go town the bottom right

this is an example of no trend

Step-by-step explanation:

a "trend" shows an increasing or decreasing relationship between the x and y values, in this they don't have any sort of relationship. you can tell by the repeating y values for multiple different x-values, or the repeating x-values for multiple different y-values.

Given f(x) = 5(2-x), what is the value of f(-3) ?

Answers

Answer:

f(-3) = 25

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) = 5(2 - x)

f(-3) is x = -3

Step 2: Evaluate

Substitute:                    f(-3) = 5(2 - -3)Simplify:                        f(-3) = 5(2 + 3)Add:                              f(-3) = 5(5)Multiply:                        f(-3) = 25

Fill in the blanks for the explicit formula.
-8, 22, 52, 82, ...

Answers

It is 30. F(30) = -8 + 30(n-1)

Answer:

it is 30

Step-by-step explanation:

i took the test so please mark me the brainlest

8z - 13 = 5z + 8 The Zs are variables ​

Answers

43 is the answer for the whole equation

Please give me the correct answer ​

Answers

Answer:

the first one; 3*1/10^-4

Step-by-step explanation:

10^-4 can be ocnverted into a fraction: 1/10^4

Answer:

3 times 1/10,000

Step-by-step explanation:

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance of 249,001. If he is correct, what is the probability that the mean of a sample of 36 cars would be less than 3245 miles

Answers

Answer:

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = 0.975

Step-by-step explanation:

Step(i):-

The mean number of miles between services

                   μ= 3408 miles  

The Variance of miles between services

                σ² = 249,001

                σ = √249,001 = 499

Let 'X' be a random variable in a normal distribution

Given sample size 'n' =36

Step(ii):-

           [tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

          Z = -163/83.16 = 1.96

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245)  =   P(Z≤1.96)

                   =   0.5 + A(1.96)

                   =  0.5 + 0.4750

                  =   0.975

Final answer:-

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) =0.975

           

         

         

Identify the following parasite provided and draw a large labelled diagram of each
specimen​

Answers

Answer:

Spiced eye gonna flush my toilet now ;)

Answer:

hes right

Step-by-step explanation:

Edmund made a scale drawing of the rectangular floor of his kitchen. In the scale
drawing, 1 inch represents 2.5 feet. The measurements of the scale drawing are
shown in the diagram.
6.4 in.
4.8 in.
what is the perimeter of the actual kitchen floor in feet?

Answers

2.5*6.4=16, 2.5*4.8=12. 12+12+16+16=56

Answer:

324

Step-by-step explanation:

K mola ofkg o okdgmbo9k

Answers

Answer: c

Step-by-step explanation:

C because the hour each have 25 more added to it

a rental car company charges drivers a flat fee to rent a car plus $0.25 for each mile they drive. If a drivers pays $100 drives 160 miles , which equation can he use to find his total cost y in terms of the number of miles driven ?

Answers

ANSWER

y = 100 + 0.25(160) - equation

y = 140 - if you needed the answer

HELP FAST WILL MARK BRAINLYEST

Answers

Answer:

It should be -7

Step-by-step explanation:

since it starts from D to B in the number line

I thing 7 is the answer

Select the correct answer

Answers

Answer:

Option B

Step-by-step explanation:

Domain of a function is represented by the set input values or x-values

Range of the function is represented by the set of output values or y-values.

From the graph attached,

y-values are varying from y = - 9 to y = 8.

Therefore, range of the function from the given graph will be,

-9 ≤ y ≤ 8

Option B will be the correct option.

jerry's softball team is made up of 15 players,and 9 of them are boys.On the team,what is ratios to boys to girls?

Answers

Answer:

9:6

Step-by-step explanation:

boys= 9 teammates

girls= 6 teammates

Find the coefficient of x^2 y^3 in the expansion of (-4x+y)^5. Give your answer as an integer.

Answers

Coefficients are the numbers in front of the variables therefore The coefficient of x^2 y^3 would be (-4)x and 1(y). Anytime there isn’t a coefficient shown in front of a variable the coefficient will always be 1. I hope this helped :)

2х + y = 4
у = 3х – 1

Answers

its 2 because 2plus is 2

plz help urgent due now!!! i will give brainliest, and dont just take my points i need this bad, 20 points



34 Select the correct answer. Martin is ordering DVDs online. Each DVD is priced at $8.50. The website also charges a flat fee of $5.00 for shipping and handling for any size order. If Martin decides to spend no more than $56, how many DVDs can he buy?

look at pic​

Answers

Answer:

i think letter d

Step-by-step explanation:

i hope you know the answer

Express 76.5% as a decimal and a fraction

Answers

as a decimal it’s 0.765 and as a fraction is 76.5/100

I need all of these please

Answers

Answer:

Step-by-step explanation:

this is the solve for the first q. only sorry

19 + 11 - 12² ÷ 3 (12 - 9) · 11)) - 7 =


Use PEMDAS for this.

Also it's a made up question

Answers

PEMDAS = Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

First, subtract the numbers in the parentheses, then multiply by 11.

(12 - 9) = (3)

3 x 11 = 33

19 + 11 - 12^2 ÷ 3(33) - 7

Now, just multiply 33 by 3, and then square 12 (12 x 12).

19 + 11 - 144 ÷ 99 - 7

Now, you can divide 144 by 99, this is an infinite number, so..

144 ÷ 99 = 1.455

19 + 11 - 1.455 - 7

Finally add, then subtract.

30 - 1.455 - 7

28.545 - 7

The final answer is 21.545.

What is the slope of the line graphed below

Find the equation of the line above. Write the equation in slope intercept form.

Answers

Slope is 1/3

Equation of the line is:

y = 1/3x - 8

write an expression equal to
[tex] {7}^{3} [/tex]
​

Answers

Answer:

7×7×7

Explanation:

[tex] {7}^{3} = 7 \times 7 \times 7[/tex]

When a number is raised to a power, it means that the number is multiplying itself as many times as the number written as the power.

Ava plays on the softball team at her school. The team won 8 of its first 12 games. At that rate, how many games will Ava's team win if it plays 60 games in all?

Answers

Answer:

She wins 40 games

Step-by-step explanation:

I'm not the best at explaining but 5x12=60 so then we multiply 8 by 5 aswell and bam we have 40.

What of the following lines is perpendicular to the line passing across the points (1,1) and (-5,-6)?

y = 6/7x + 1

y = -6/7x + 1

y = -6/7x - 1

y = 6/7x - 1

Answers

First find slope
(-6-1)/(-5-1) = -7/-6 = 7/6
Perpendicular = opposite sign and reciprocal slope
Slope would be -6/7
It would be anything with slope of -6/7

what is the product in simplest form? -8/9 times 5/6 All the ANSWERS:
-1
-13/15
-20/27
-1/5

Answers

C -20/27 because 5x-8= -40 and 9x6= 54 and u divide both numbers by two and get C
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