Mathematics Middle School

Let f(x)=2x^4+x^3+x^2-3x+r. For what value of r is f(2)=0?

Answers

Answer 1

Answer:

the answer is 0

Step-by-step explanation:

Answer 2

Answer:

r = -38

Step-by-step explanation:

For what value of r in the formula:  f(x)  =  2x4 + x3 + x2- 3x + r  does  f(2)  =  0?

Replace x with 2:  2·24 + 23 + 22- 3·2 + r  =  32 + 8 + 4 - 6 + r  =  38 + r

This value is to equal 0:   38 + r  =  0

                                                r  =  -38

Related Questions

What is the value of the 7 in the number 2.703?
7
0.007
0.07
0.7

Answers

answer: the value of the 7 in the number 2.703 is 0.7
It is the very last one! After the decimal the values are tenths, hundredths, thousandths! So the 7 would be the tenths! 0.7!!

Help please asap! A B C OR D ?!

Answers

Answer:

the answers most likely C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

I need this question answered fast ;c

Find the percent change from 29 to 18. Round to the nearest tenth

Answers

it’s prob 20 or 30 Bc 18 is rounded to 20 and 29 is rounded to 30
30 I say 30 might be 20 low chance tho have to make it 20 characters long

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

i dont know sorry

Step-by-step explanation:

hmmm tough

but you should do this and this and this

Answer:

Not enough information for me to awnser this question for you

Step-by-step explanation:

Give more information

An equilateral triangle has three equal sides.
Write a relation for the perimeter of an equilateral triangle with side length k.
What is the perimeter of an equilateral triangle with side length 15 cm?

Answers

Answer:

Step 1. Perimeter P means adding up all three sides of a triangle.

Step 2. Then P=s+s+s=3s where s is the length of the side of the equilateral triangle.

Step 3. ANSWER: Perimeter P=3s.

I hope the above steps and explanation were helpful.

Step-by-step explanation:

HOPE THIS HELPS

Answer:

p = 3k

45cm

Step-by-step explanation:

Since all sides of an equilateral triangle are equal, to find perimeter, you multiply the number of sides by the length of one side.

So the equation would be p = 3k (k represents the side length and 3 is the number of sides)

If a equilateral triangle has a side length of 15, you just multiply 15 by the number of sides.

3 (15cm) = 45cm

Math Topic: Scale Drawings. What is the scale factor from polygon ABCD to polygon PQRS? Write your answer in fraction form. ( Look at image to get answer) Please answer! I just started this unit and I don't know the answer.

Answers

Answer:

1.5 is the asnwer because when you multiply first image by 1.5 you get the second.

5.) A jar contains 91 pennies. A bigger jar contains 1 2/7 times as many pennies. What is the value of the pennies in the bigger jar

Answers

91 x 1 2/7=117 which is the answer

A weather station on the top of a mountain reports that the temperature is currently and has
been falling at a constant rate of per hour. Find each temperature. Explain or show your
reasoning.

What was the temperature?

D. An hour ago?
E. 3 hours ago?
F. 4.5 hours ago?

P.S. middle school work my cousin needs answers please help!

Answers

D. An hour ago (i think).
Answer: (D.) an hour ago
Explanation: It stated “has been falling at a constant rate of per hour...”

BRAINILIST TO FIRST PERSON TO ANSWER AND GET IT CORRECT!!! please answer fast!

Answers

Answer:

The model show the expression 3/10 ÷ 1 4/5. There are six groups of 3/10 that make up 1 4/5. Tina can make six bottles of perfume.

Step-by-step explanation:

Nisha receives $10 each week for school expenses and uses $7.50 of the money to buy lunch. What percent of the $10 does she spend on lunches each week?

a. 55% b. 65% c. 75% d. 85%

Answers

Answer:

65 %

Step-by-step explanation:

65% aka b hope this helps

if the temperature of the water were to increase to 38 degree Celslus, how do you think that might affect the fish

Answers

It could would make the gold fish breath faster because as the warmer them increases so will there breathing.

!!Please Helppppppp ASAP!! ):


Which is the constant of proportionality for the relationship shown in the table?


x y

4 2

7 4

10 6

13 8



A. 32

B. 23

C. 3

D. 2

Answers

Answer:

A.)32

Step-by-step explanation:

x is increasing by 3 while y is increasing by 2

This is a sort of guess so I hope its right

Answer:

A.)32

Step-by-step explanation:

x is increasing by 3 while y is increasing by 2

I hope it helped

sorry about the f and the other letter idk if its a number or letter xD

Answers

Answer:

9*7=(10*7)-(1*7)

=70-7

=63

Step-by-step explanation:

did you even try?

A system of equations has no solution. If y = 8x + 7 is one of the equations, which could be the other equation? 2y = 16x +14 y = 8x – 7 y = –8x + 7 2y = −16x − 14 Mark this and return

Answers

Stuck on the question not irl but trying to help u

what is the answer plez help

Answers

I’m not sure very sorry good luck tho

A costume designer made 10 costumes that each used 5.8 yards of fabric. If she had 238.2 yards of fabric to start with, about how much fabric does the costume designer have left? Write an equation and estimate the amount of fabric left.

Answers

Answer:

approximately 180.2

Step-by-step explanation:

238.2 - (10 times 5.8) = x

238.2 - 58 = x

180.2 = x

Find the equation of the trend line (line of best fit). Show your work.
50 points and brainliest
(there is an image of a graph attached)

Answers

Answer:it would be a/c

Step-by-step explanation:

the answer would be a/c

ANSWER ASAP GIVING BRAINLIEST AND FIVE STARS!

Please answer the following essay question:

Describe how a newspaper is organized. Why do you think the stories, pictures, advertisements, and cartoons are laid out the way they are?

Answer in paragraph form using 5-7 complete sentences.

Answers

It’s organized on which is more important and which is least important and they Wright about a subject then they put a picture to tell you about it

Answer:

 A newspaper is organized in a logical format. The front page has the most exciting news of the day. The editors determine what is most newsworthy for their readership. The A-section contains world and national news; the B-section contains local news. Some of the categories include entertainment, local news, national news, classified advertisement, and neighborhood news. They are laid out the way they are because they want to catch the reader's eyes. They want the reader to look at the newspaper and think "oh that looks interesting."

what is the GCF of 7/3ab and -7/6b

1/3b
1/3ab
7b
7ab

Answers

Answer:

The first one 1/3 b

Step-by-step explanation:

Alex wants to buy a case of drinks, he doesn’t have enough. The cost of the case is $30. He already has $2. He gets $8 every hour for work. How many hours does he need to work to get the amount he needs? Explain what your solution means in the context of the problem.

Answers

Answer:

Alex will need to work 4 hours.

Step-by-step explanation:

We know that Alex already has $2. This means that to get $30 he now only needs to get $28. If he gets $8 per hour, we know that 8 x 3 = 24, but that isn't enough. In this case, 3 is how many hours he works. Because $24 isn't enough, he needs to work 4 hours to get $32 in order to buy the case. Even though he has more money than he needs, he will be able to buy the case and save some extra money.

Answer:

3.5

Step-by-step explanation:

Wright, an equation first like this,

2+8x=30 because he needs 30 dollars but already has 2 and earns 8 dollars per hour.

Solve:

2 + 8x = 30

30-2= 28

28/8= 3.5 so he would need to work 3.5 hours.

what is the answer to 523 divided by 4 please?

Answers

Answer:

130 R 3

Step-by-step explanation:

Answer with remainder: 130 R 3

Answer with fractions: 130 3/4

Answer with decimals: 130.75

Neha used 3 bananas and 4 oranges in her fruit salad. Daniel used 6 bananas and 8 oranges. Did Neha and Daniel use the same ratio of bananas to oranges?

Answers

Answer:

3:4

6:8

crossmultiply

3/4=6/8

3*8=4*6

24=24

yes they used the same ratio

Which values of a, b, and c correctly complete the division?


1/4 divided by 5/6 = 1/a times b/c


a = 4, b = 5, c = 6

a = 1, b = 6, c = 5

a = 1, b = 5, c = 6

a = 4, b = 6, c = 5


I do not want Spacechad dude to answer but help thx

Answers

a=4 b=6 and c=5. You have to use the keep it change it flip it rule
The last one a=4 b=6 c=5

3.5 × 4 brainliest...

Answers

Answer:

14

Step-by-step explanation:

14

Use a graph to find x and y values that make both y=-23x+3 and y=2x−5 true.

Answers

Answer:

y=x^2

Step-by-step explanation:

The graph of the equation y = - 23x + 3 and y = 2x - 5 is attached in the image below.

What is the graphical solution of a system of equations?

Graphical solutions of a system of equations are a way of finding the intersection points of all the equations given.

A system with two or more than two equations has a solution only when they have a common intersection point.

Given, Are two equations y = - 23x + 3 and y = 2x - 5.

Subtracting equation 1 from equation 2 we have,

25x = - 8.

x = - 8/25.

y = - 2(8/25) - 5.

y = - 16/25 - 5.

y = (- 16 - 125)/25.

y = - 141/25.

learn more about the system of linear equations here :

https://brainly.com/question/27664510

#SPJ2

WILL MARK BRAINIELST Elsie took out a 2-year loan to buy a car at a 6% simple interest rate. If she paid $2200 for the car, how much will Elsie pay in interest?

Answers

Answer: $2154 I am first one YAAAAAAAAAAAAAH

Answer:

$2332

Step-by-step explanation:

6% of 2200 = 132

2200 + 132 = 2332

Tommy is thinking about entering a contest at the local gas station. Some of Tommy’s
friends explained to him that the probability of winning the free tank of gas was 0.27. Tommy
understands probabilities better when they are given in ratio form.

Give Tommy your estimate of 0.27 probability in ratio form.

Answers

Answer:

his chances are 27 out of 100 or 27/100

Step-by-step explanation:

27/100 hope it helps!!!

7,623 divided by 32 with a REMAINDER DO IT ON PAPER!

Answers

hope this helps. (238 R3)
7,623 divided by 32 is 238 r7

TRUE OR FALSE?
-7 = (-5) - (-12)

Answers

Answer:

false

Step-by-step explanation:

-7=(-5)-(-12)

-7=-5+12    

-7=7 is not true

Answer
False
Explanation

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!

Answers

The answer is 20x-21y+14
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