If f(x)= 9x^2+2x-3, find f(-1).

Answers

Answer 1

Answer:

f(-1)= 4

Step-by-step explanation:

Just plug -1 into all Xs

and split it into 2 seperate problems for the time being

[9 times (-1)^2] + [2(-1)-3]

-1 squared is positive 1  times the 9 is just 9

Plus  2 times -1 is -2 minus 3 is -5

combine the two seperate problems you have

9-5 the subtract and

f(-1)= 4


Related Questions

Consider the two linear expressions.

−(−12−6x−3) and 3.5−6x

Are the two linear expressions equivalent?

Drag a word or phrase to the box to correctly complete the statement.

The expressions are Response area.
The option "not equivalent" (2 of 2) has been grabbed. Press tab to choose where to drop it. Drop it by pressing the spacebar key. Cancel the operation by pressing escape.

Is it equivalent or is it not equivalent pick one

Answers

Answer:

Step-by-step explanation:

−(−12−6x−3)

= 12 + 6x + 3

= 6x + 15.

So 3.5 − 6x  is not equivalent to −(−12−6x−3)

Both linear equations are not equivalent to each other and this can be determined by evaluating the equation (-(-12 - 6x - 3)) by using the arithmetic operations.

Given :

Equations  ---  -(-12 - 6x - 3) and (3.5 - 6x)

The following steps can be used in order to determine the given equations are equivalent or not:

Step 1 - Write the given equations.

=−(−12−6x−3)               ---- (1)

= (3.5 − 6x)                  ---- (2)

Step 2 - Multiply -1 by (−12−6x−3) in the equation (1).

= 12 + 6x + 3

Step 3 - Add 12 and 3 in the above expression.

= 6x + 15   ---- (3)

Step 4 - Now, compare equation (2) and equation (3).

6x + 15 [tex]\neq[/tex] 3.5 - 6x

So, from the above steps, it can be concluded that both linear equations are not equivalent to each other.

For more information, refer to the link given below:

https://brainly.com/question/15385899

To pay for his art supplies, Travis makes hand-painted skateboards to sell online. He paints 2
skateboards every 7 days.
Complete the table

Answers

Answer:

14 days for 4 and 28 days for 8 and 42 for 12

Step-by-step explanation:

dobbke them to get your answer

Answer:

PLEASE ANSWER MY QUESTION AS WELL :)

HERE R UR ANSWER:

Day 2 = 14

Skateborads painted:

Day 3: 28 = 8

Day 4: 42 = 12

Step-by-step explanation:

What is the slope of a line perpendicular to the line y= -42 + 16
a. 1/4
b. -4
c. 4
d. -1/4

Answers

I think you might’ve wrote the problem wrong and meant y = -4x + 16. If that’s the problem than the slope of a line perpendicular to it should be 1/4, since it’s the opposite reciprocal.

On a coordinate plane, 2 straight lines are shown. The first solid line has a positive slope and goes through (0, negative 2) and (2, 0). Everything to the left of the line is shaded. The second dashed line has a negative slope and goes through (0, 2) and (4, 0). Everything below and to the left of the line is shaded.
Which system of linear inequalities is represented by the graph?

y > x – 2 and x – 2y < 4
y > x + 2 and x + 2y < 4
y > x – 2 and x + 2y < 4
y > x – 2 and x + 2y < –4

Answers

Answer:

(C) : y[tex]\geq[/tex] x - 2 and x + 2y < 4

Step-by-step explanation:

Answer:

(C) : y ≥ x - 2 and x + 2y < 4

Edge Unit Test 2023

Please help me! Please!

Answers

Answer:

here is your aneswer

the answer. will be 40

A _________ indicates the outer edge of a roadway, and it may be crossed only by traffic moving to or from the shoulder.

Answers

Answer:

edge lines

Step-by-step explanation:

pls answer the problem below

Answers

Answer:

9 hours

Step-by-step explanation:

just do 441/7 and then you get 63 miles per hour

and then you divide 567/63 and you get 9!

easy peasy hope I helped

b. You can determine how many times greater the range of one internet company is than the other by writing their ranges as a ratio that compares the range of Winnies wireless access devices to the range of Ivan’s wireless access devices.

Answers

Answer:

1.32 x 104: 2.64 x 103

1.32 x 10*4 1.32

------------ = ----- x 10*4-3 = 0.5 x 10 = 5

2.64 x 10*3 2.64

Step-by-step explanation:

20,612,439 in scientific notation

Answers

2.0612439*10^7 should be your answer

An auto mechanic earns $498.75 in 35 hours during the week. His pay is $2.50 more per hour on weekends. If he works 6 hours on the weekend in addition to 35 hours during the week, how much does he earn?

Plz show work and i will be so grateful

Answers

Answer:

35 hours during week pay: 498.75

2.50 more on weekends

Lets us find unit rate

498.75/35= 14.25

14.25 dollars on weekday add 2.50 and...

16.75 dollars is pay per hour on weekends

16.75*6= 100.5

100.5+498.75=

599.25 dollars

Step-by-step explanation:

Answer:

512.75$

Step-by-step explanation:

2.50 x 6 = 15.00$

So, add 15 to 498.75 by using standard algorithm.

Your result should be 512.75$

Therefore, your answer would be 512.75$

-kiniwih426

What is the missing value??

Answers

the missing value is 17.

Answer:

17

Step-by-step explanation:

The 'y' is increasing by 4 every time 'x' is going up by 1

32 450 to nearest thousand

Answers

answer would be:32000

Answer:

32,000 or 32 thousand

Step-by-step explanation:

When looking at thousands, we must determine if the hundreds place has more than 5 which would be half of a thousand. So... if there would have been 32500, then the answer would have been 33,000 because there were 500.

Since there are only 450, we are going to have to round back to 32,000 since the number isn't large enough.

-kiniwih426

Simplify 2 square root 36

Answers

Answer:

2√36 = 12

Step-by-step explanation:

2√36

√36 = 6

2(6) = 12

A circle has a diameter of 12 cm. What is the area of this circle?

Answers

Answer:

113.04 im not sure though, I would double check first (:

Step-by-step explanation:

please help me
IF YOU DONT KNOW THE QUESTION, PLEASE DONT ANSWER IT FOR THE PONIS. I REALLY NEED IT

Answers

Answer:

As follows,

Step-by-step explanation:

1

3x^2y^-1

3x^2/y

2

∛2x^5y^3

2^(1/3)x^(5/3)y^(3/3)

2^(1/3)x^(5/3)y

3

5^(4/4)x^(1/4)y^(3/4)

∜5^4xy^3

simplify -1 1/2 divided by 1 2/3

Answers

Answer:

-5/2

Step-by-step explanation:

Or -2.5

If you divide a negative by a positive it becomes a negative.

Hope this helps any!

Determine whether the ordered pair is a solution of the linear equation y = -3/2x + 8 (2/37)

Answers

Answer:

No it is not a solution of the linear equation

Step-by-step explanation:

it is not a solution because

37= -3/2(2)+8

37= -3+8

37=5

When the exponent is 2 and the base is unknown and the answer is 0.64 What is the base?

Answers

the base is 0.8
0.8^2 would also be 0.8 x 0.8
which will equal 0.64

ANSWER FOR A CHANCE TO WIN A TESLA MODEL X


(image down below)

Answers

Answer:

all right angles are congruent (90 degrees)

Step-by-step explanation:

I don't know if there are choices for you, but all right angles are congruent, meaning they are the same measurement

Find two consecutive numbers whose squares differ by 11.
Please help! I will give you brainliest​

Answers

Answer:

6 and 5

Step-by-step explanation:

6*6 -5*5

=36-25

=11

Help solve this please.

Answers

Hey there!

(-12) - (+3 - 4 - 10) + (-15)

= -12 - (3 - 4 - 10) - 15

= -12 - (-1 - 10) - 15

= -12 - (-11) - 15

= -12 + 11 - 15

= -1 - 15

= -16

Therefore, your answer should be: -16

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

> Simplify the expression: | - 8 - ( + io)
5
12
4.
5
12
4.

Answers

-79/100 and the decimal form is -0.79

Someone pleaseee help me out with this question!!!

Answers

Answer:

51.2%

Step-by-step explanation:

I just reduced 20% each time starting with 100, so it became 51.2/100 or 51.2%

Answer:

c 48.8%

Step-by-step explanation:

the % of price reduction = 1-80%×80%×80%

=48.8%

Can someone pls help me out

Answers

>> Answer

___________

[tex] \: [/tex]

[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]

This is Question no picture, soo iam work in question before^^

Step by step :

x² = 12² + 10²

x² = 144 + 100

x² = 244

x = 15,6m

A teacher spends $150 on school supplies for the classroom, folders are $0.25 each and notebooks are $2.50 each. This linear relationship can be represented by 0.25x+2.50y=150, where x represents the number of folders and y represents the number of notebooks.

.Identify the x-intercept. Explain what this means in the context of the problem.
.Identify the y-intercept. Explain what this means in the context of the problem.
.Identify one additional combination of school supplies that the teacher could have .purchased with their budget. Explain what this means in the context of the problem.

Answers

Here’s your answer it’s in the screenshot that is attached

4(x-8)+12 equal 2(2x-9)

Answers

(Answer explained)

4(x-8)+12=2(2x-9)

We move all terms to the left:

4(x-8)+12-(2(2x-9))=0

We multiply parentheses

4x-(2(2x-9))-32+12=0

We calculate terms in parentheses: -(2(2x-9)), so:

2(2x-9)

We multiply parentheses

4x-18

Back to the equation:

-(4x-18)

We add all the numbers together, and all the variables

4x-(4x-18)-20=0

We get rid of parentheses

4x-4x+18-20=0

We add all the numbers together, and all the variables

-2!=0

There is no solution for this equation

   

find the value of k so that the two given lines are parallel. -5x+kx=4 2y-9x=11

Answers

The value of k so that the two given lines are parallel is; k = 22.5

First, the correct question is;

-5y+ kx = 4 and

2y-9x=11

In line segment geometry;

The slopes of two or more parallel lines are equal

First, we must determine the slope of the lines by rewriting the equations to resemble the equation of a line in the slope-intercept form; y = mx + c

Therefore, we have;

y = (k/5)x - 4/5.................eqn(1)

and y = (9/2)x + 11/2....,........eqn(2)

Evidently, the slope of the line in equation 2 is; 9/2

.

And since the slope of parallel lines are equal;

k/5 = 9/2

By cross product;

2k = 45

k = 22.5

Read more:

https://brainly.com/question/12557573

Jose needs 6.2 lb of organic blueberries to make smoothies. Organic blueberries are on sale for $2.85 per pound. Jose estimates that he will need $12 to buy the 6.2 lb of blueberries. What is Jose’s error?
1. Jose did not make an error. His estimate of $12 is correct.
2. Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.
3. Jose incorrectly rounded 6.2 up to 7.
4. Jose incorrectly multiplied 2 and 7. The estimate should be $14.

Answers

Answer:

B

Step-by-step explanation:

Helllp pls help and don’t comment if u don’t know

Answers

Answer:

a) 7z³+2z²-2z+1

b)2x²+3x-8

Step-by-step explanation:

a) (7z³+4z-1)+(2z²-6z+2)

   7z³+2z²-2z+1

b) (5x²-2x-1)-(3x²-5x+7)

   5x²-2x-1-3x²+5x-7

   2x²+3x-8

For the first one Answer:7z^3 −2z+1+2z^2

Step-by-step explanation:

(7z ^3

+ 4z −1)+(2z^2

− 6z +2)

Combine 4z and −6z to get −2z.

7z3  − 2z −1 + 2z2  +2

Add −1 and 2 to get 1.

7z3  − 2z + 1 + 2z2

the abc store sold 3 ukuleles for 30$. what is the unit price?

Answers

Answer:

$10 dollars per ukuleles

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

90 dollers and zero cents

Other Questions
Only people who suffer a (blank)can donate organs. Roughly what percentage of Americans are immigrants?.7%3%9%5% NEED Help What is one element a topographic map shows? ElevationSpaceTemperatureWeather please help with this! Explain the operation of an electric circuit in terms of voltage, current, and charge. 2.40 x 10^2/ 3.0x 10^-1 Which of the following represents the velocity of a light wave?O A. E = fx2O B. c = hxfO C. E = hxfO D. c = fx2 Critical Thinking Skill: Analyze a ParadoxA paradox is a statement that seems to contradict itself. Walcott builds "Love after Love" around the paradox of "thestranger who was yourself."Directions: Use the chart below to analyze the stages of self-knowledge in the poem. Use your own words to describe eachof the two roles, the stranger" and the self, in each part of the poem.The StrangerThe Present SelfAt the beginning of the poemIn the middle of the poemAt the end of the poem Express in scientific notation. Choose the answer with the proper number of significant figures. What best explains the difference between climate and weather? Why is the sequence of amino acids important to protein function?Multiple choice question.A)The sequence of amino acids doesn't have an effect.B)The order of amino acids determines the shape a protein will take.C)The order of the amino acids can be read like a code to assemble DNA.D)Amino acids can only be combined in a specific order, otherwise the bonds will fall apart. Can someone help me with these please. Question 8How does the character of this place reveal its location? On January 1, 2021, Nath-Langstrom Services, Inc., a computer software training firm, leased several computers under a two-year operating lease agreement from ComputerWorld Leasing, which routinely finances equipment for other firms at an annual interest rate of 4%. The contract calls for four rent payments of $17,500 each, payable semiannually on June 30 and December 31 each year. The computers were acquired by ComputerWorld at a cost of $105,000 and were expected to have a useful life of six years with no residual value. Both firms record amortization and depreciation semiannually. (FV of $1, PV of $1, FVA of $1, PVA of $1, FVAD of $1 and PVAD of $1) (Use appropriate factor(s) from the tables provided.) Evaluate.0-1.02 (-4)Enter your answer in the box. What agencies are in-charge of implementing the intellectual property code? Texas law also requires children of certain ages, weights and heights to which type is metamorphic rock formed from limestone? Which choice is an element? carbon dioxide water carbon air where does the energy start and where does it end