r(x) = -4x² + 5x1
r(-3) =?

Answers

Answer 1

Answer:

therefore when x = -3, r(x) = -51

Step-by-step explanation:

This is a function of r(x), so when it says r(-3), the x value is -3, so we have to find the value of r(x) when x=-3.

just plug in the x value in to the given equation

r(-3) = [tex]-4(-3)^{2}[/tex]+5(-3)

r(-3) = -4(9)+5(-3)

r(-3) = -36+-15

r(-3) = -51

therefore when x = -3, r(x) = -51

Answer 2

Answer:  r(x) = -51  

If the 1 is not a +1  or a -1    

It is very unusual to have a 1 in that position.

Step-by-step explanation:

Substitute the value given (-3) in place of x, and evaluate the function.

r(-3) = -4(-3)² + 5(-3)

r(-3) = -4(9) - 15

r(-3) = -36 -15

r(-3) = -51


Related Questions

Which are characteristics of the graph of the function f(x) = (x + 1)2 + 2? Check all that apply.

The domain is all real numbers.
The range is all real numbers greater than or equal to 1.
The y-intercept is 3.
The graph of the function is 1 unit up and 2 units to the left from the graph of y = x2.
The graph has two x-intercepts. HELP 40 POINTS

Answers

Answer:

A and C

Step-by-step explanation:

Answer:

A and C

Step-by-step explanation: hope it helps ^w^

2 (4x-2)- 5x=-18
HELP!!

Answers

i think it’s x= -14/3

Answer:

x = -14/3

Step-by-step explanation:

2 (4x-2) - 5x = -18

8x - 4 - 5x = -18

8x - 5x = -18 + 4

3x = -14

x = -14/3

I'm not sure if this is what you were asking for but, ya..

Translation has no fixed points
True or False

Answers

Answer:

False?

Step-by-step explanation:

False pretty sure.!!!!!

if AB || CD and AC = BD, is ACD = CAB?

Answers

Yes becauseGuess the sides are all equal but not one so 8BACDNequals CAB

5x-6
3x +2
5yº
Only enter the number. What is the value of x?

Answers

Answer:

4

Step-by-step explanation:

the slope of the line represented by 3x-5y=-15

Answers

Answer:

i think its 3/5

sorry if im wrong:(

Step-by-step explanation:

Answer:

Since the equation '3x + 5y = 15' is transformed to slope-intercept form 'y = (-3/5)x + 3' the slope is (-3/5).

Step-by-step explanation:

Since the equation '3x + 5y = 15' is transformed to slope-intercept form 'y = (-3/5)x + 3' the slope is (-3/5).

⚠️⚠️I literally have almost a minute left please heLP I WANNA FINISH⚠️⚠️

Answers

I think it is 6. 2/8

Joey is standing on a diving board that is 5.6 feet above sea level. Joey dives into the water to a depth of -8.6 feet below sea level.

Answers

Answer:

14.2 feet

Step-by-step explanation:

I'm guessing the question is asking how far did Joey travel from the diving board.

Joey is 5.6 feet above 0 so to reach 0 we must subtract 5.6

-5.6 + - 8.6 = - 14.2 feet

Joey traveled 14.2 feet

find one arithmetic means between 2 and 32? step-by-step​

Answers

Answer:

17

Step-by-step explanation:

An arithmetic mean is the average of the 2 given numbers, that is

mean = [tex]\frac{sum}{count}[/tex] = [tex]\frac{2+32}{2}[/tex] = [tex]\frac{34}{2}[/tex] = 17

Fill in the blank to find the y-intercept. Please help me​

Answers

Answer:

the y-intercept is 2 hope this helps

Answer:

y intercepts -1.5

Step-by-step explanation:

X=0 so you need to find it inthe point where the x = 0

A line passes through (3, -3) and has a slope of 3. What is an equation of the line ???

Answers

Answer:

y=3x-3

Step-by-step explanation:

y=mx+b

m=slop

b=y intercept


7x-11>3
Solve and graph for X
Beep help please ASAP

Answers

71/2x-4 and the graph is attached

need help i can maybe help y'all and if yall need points i can give y'all points and if i need some points maybe yall can help give points? enjoy your day and weekend

Answers

Answer:

whats up?

Step-by-step explanation:

Answer:

i have some bio questions that i need answered lol

Step-by-step explanation:

the student scored 18 points out of 25 what percent did he make?

Answers

He made a 72% hehehhehe

Hello good afternoon...God bless here is the answer to your following question

The student scored 18 points out of 25 which mean he got an

72%

The temperature at 6:00 P.M. was 25°C. The temperature dropped 3°C per hour. What was the temperature at 4:00 A.M.? A.23 Degrees
B.-5 Degrees
C.-23 Degrees
D.5 Degrees

Answers

The answer to the question is 23°

Answer:

the temperature dropped to -5 by 4:00 am

Step-by-step explanation:

aliyah had some candy to give her four children. She first took ten pieces for herself and then evenly divided the rest among her children. Each child received two pieces. with how many pieces did she start?

Answers

answer: 18.
if aliyah gave 2 to her 4 children, thats 4x2 which equals 8, plus the 10 she took to get 18.

g (x) = 3x - 8, find g (-3)

Answers

Answer:

-17

Step-by-step explanation:

To find g(-3), we have to substitute the -3 as x.

g(-3) = 3(-3) - 8

g(-3) = -9 - 8 = -17

after giving 8 apples to her friend, John finds notices that two third of the remainder is 12.how many appledid she have all tigether​

Answers

Answer:

26

Step-by-step explanation:

It started with x apples.

8 were given away.

Now there are x - 8 apples.

Two thirds of the remainder is (2/3)(x - 8).

That is equal to 12.

(2/3)(x - 8) = 12

x - 8 = 18

x = 26

There were originally 26 apples.

Answer:

26, if I understood the question correctly.

John has an amount of apples, gave 8 to her friend, and noticed that two thirds of the remainder is a dozen.

Step-by-step explanation:

If 2/3 of the remainder is 12, then we can set this up as an algebraic equation to see what the remainder started with.

x*2/3=12

Now we can see that we need to divide the 2/3 to get the answer for what x is equal to.

[tex]x=12/(\frac{2}{3} )[/tex]

To divide fractions, you multiply by the reciprocal, (or the fraction upside down)

[tex]x=12*(\frac{3}{2})[/tex]

When we multiply 12 by 3/2, we get 36/2, and when we reduce, we get 18.

If the entire remainder is 18, then the original total would be 18 plus the 8 that John gave to her friend.

18+8=26

Kind of a strangely worded question, I hope I understood correctly

Graph y=2x+2 and y=x

Answers

Answer:

2+2 is 4-1 is 3 quick mafs

Step-by-step explanation:

what I just said

What is the solution for x in the equation? -2x + 14 + 10x = 34 A. X=6 B. X=2/5 C. X=1/8 D. X=5/2

Answers

Answer:

Step-by-step explanation:

x =(10-√-800)/2=5-10i√ 2 = 5.0000-14.1421i

x =(10+√-800)/2=5+10i√ 2 = 5.0000+14.1421i

the answer is 5/2

Step-by-step explanation: im just that good enjoy the free answer you cheating loser

The price of a car was decreased by 16% to £2400. What was the price before the decrease?

Answers

Answer:

£2857.14

Step-by-step explanation:

Given parameters:

Cost of car  = £2400

 Discount  = 16%

Unknown:

The original cost  = ?

Solution:

 Original price - ( 16%  x original price) = New price

   Original price(1 -  16% ) = 2400

   Original price(1 - 0.16) = 2400

    Original price x 0.84 = 2400

    Original price  = [tex]\frac{2400}{0.84}[/tex]   = £2857.14

What is
12%expressed
as a fraction?

3/25

1/8

6/25

1/4

Answers

3/25 because it's 12% expressed as a fraction

2x + x +9 = 21
i need help

Answers

X=21/11 that’s how it’s works

8. You draw one card from a standard 52-card deck. In how many ways could the card be an even number or a queen?​

Answers

Answer:

The card could have been 50% an even number and 25% for a queen

Step-by-step explanation:

Please help me!! Thank youu

Answers

Answer:

6.5x and 3.05x were adding incorrectly.

Step-by-step explanation:

The answer to adding those two numbers would be 9.55x

Answer:

error is in step A. 6.5x and 3.05x do not combing to 10x. instead, it should be 9.55x

will give branliest if correct :)

Answers

Answer:

15.71

Step-by-step explanation: I did It on a peice of paper and it's a mess so yeah......

g(x) = 3x + 2
f (x) = x^3 + x^2 - 2x
Find (g + f )(4)

Answers

Answer:

4x^3+4x^2+4x+8

Step-by-step explanation: find (g+f)(4)

g(x)=3x+2

f(x)=x^3+x^2-2x

______________________

(4)*(3x+2+x^3+x^2-2x)

(4)(x^3+x^2+x+2)

4x^3+4x^2+4x+8

Please help need answer now!!

Answers

Answer:

-5

Step-by-step explanation:

count down to the lowest point

Answer:

Answer is -5

Step-by-step explanation:

count down all the way to the lowest point/the end of the line downwards.

aight 20 points for you my man
also what is 13 + 19*23 =

Answers

Answer:

1200

Step-by-step explanation:

450 and thanks man XDDD

what is the answer to this question

Answers

Answer:

Number of protons

Step-by-step explanation:

The atomic number represents the number of protons that are in the nucleus. This says what chemical properties something has and where it is located on the periodic table.

Best of Luck!

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