Mathematics High School

If f(x) = - 3x3 -- x2 +8
what is f(-2)?

Answers

Answer 1

Answer:

f(-2) = 28

Step-by-step explanation:

Given that,

[tex]f(x) = - 3x^3 -x^2 +8[/tex]

We need to find the value of f(-2). Put x = -2 in the given function. SO,

[tex]f(-2) = - 3(-2)^3 -(-2)^2 +8\\\\=24-4+8\\\\=28[/tex]

So, the value of f(-2) is equal to 28.

Related Questions

Given that 6 > -2, which statements are true? Check all that apply.
(2)(6) > (-2)(2)
-2
2 2
(-2)(6) > (-2)(-2)
-2
-2 --2
(2)(6) < (-2)(2)
-2
2 2
NIO

Answers

Answer:

hello rspl social science sample paper chaye

Answer:

i don't know

Step-by-step explanation:


Angles 1 and 2 are an example of
angles.

Answers

Answer:

veritcal angles

Step-by-step explanation:

Given the function f(x) = 2 x + 61 - 4, for what values of x is f(x) = 6?

O x= -1, x = 11

Ox=-1, x = -11

O x= 14 = -26

O x= 26, x=-14

Answers

Answer:

[tex]x = -1[/tex] or [tex]x = -11[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 2|x+6| - 4[/tex]

Required

Find x when

[tex]f(x) = 6[/tex]

Substitute 6 for f(x)

[tex]6 = 2|x+6| - 4[/tex]

Add 4 to both sides

[tex]4+6 = 2|x+6| - 4+4[/tex]

[tex]10 = 2|x+6|[/tex]

Divide both sides by 2

[tex]5 = |x + 6|[/tex]

Rewrite as:

[tex]|x + 6| = 5[/tex]

This can be split to:

[tex]x + 6 = 5[/tex] or [tex]-(x + 6)=5[/tex]

Solve for x in both cases

[tex]x = 5 - 6[/tex] or [tex]x + 6 = -5[/tex]

[tex]x = -1[/tex] or [tex]x = -6 - 5[/tex]

[tex]x = -1[/tex] or [tex]x = -11[/tex]

Answer:

i think it’s x= -1, x = -11

Step-by-step explanation:

Jax takes a bus from Washington DC to New York City. The trip takes 5 hrs. and 47 minutes. He arrives in New York City at 1:58 pm. what time did the bus leave Washington DC?

Answers

Answer:

8:11 a.m.

Step-by-step explanation:

We need top subtract 5:47 from 1:58 pm.

Since we cannot subtract 5 from 1, we add 12 to the 1:58 hours digit.

1 + 12 = 13

1 pm is 13 hours of the day.

13:58 - 5:47 = 8:11

Answer: 8:11 a.m.

someone please help me ASAP!!!! I really need it

Answers

^ this guy is a scammer don’t click the link

Please help me with the question please ASAP ASAP

Answers

156

Especially since the shape is convex


Answer:

2340

Step-by-step explanation:

Since, the formula for finding sum of interior angles of a polygon is :

(n-2) × 180° [Where 'n' denotes number of sides]

Hence,

Sum of interior angles of a pentadecagon is ,

(15 - 2) × 180°

= 13 × 180°

= 2340°(Ans)

What is the IQR (Inter Quartile Range
0, 21, 45, 3, 1, 5, 25

Answers

Answer:

Interquartile range = 24

Step-by-step explanation:

First we need to put the sequence in order from lowest to highest.

0, 1, 3, 5, 21, 25, 45

5 is the median and then from 5 to 0 we need to find the lowest interquartile in between it which is 1.

Highest interquartile from 5 to 45 finding the middle will be 25.

Interquartile range = highest interquartile - lowest quartile

25-1 = 24


PLEASE HELPPPP I GIVE BRAINLIEST!!!

Answers

The answer is 1860.1

can someone pls help me?? I’m so bad at math

Answers

Answer:

the first one is y=x-1/2 and the second one is y=-3x+1

Step-by-step explanation:

the crystal clear window washing company washed 1/5 of a high-rise building's window on monday, 1/4 on tuesday, and 3/8 on wednesday.
what percentage of the buildings windows were not washed after three days?

Answers

Answer:

the correct answer is 17.5%

Step-by-step explanation:

HELP ASAP. I need this in NOW.

Answers

Answer:

B

Step-by-step explanation:

when x=1 y=3.9 when x=2 y=7.8 and so on

Find the geometric mean between 8 and 18. Write answer as a simplified radical. No Decimals!!!!

Answers

Answer: Therefore, the geometric mean of 8 and 18 is 12. Therefore, the geometric mean of 8 and 18 is 12.

Step-by-step explanation:

Use a table to find (h-8)(h-9).

Answers

Well, I don’t see a table but your answer:

h^2-17x+72

Just use FOIL

Help me??? Pleaseeeeee!?

Answers

Answer:

all u got to dooooo is take two sets of pointssss and find the rate of change using the formula y1-y2 x1/x2

Step-by-step explanation:

What are the domain and range of f(x) = 2|x – 4| + 3 ?

Answers

☁️ Answer ☁️

I think it's the second one.

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

20% of what number is 30? Which equation and solution represents each situation?

Answers

Answer:

150

Step-by-step explanation:

it would be 150. i’ll attach an image of the equation

Please help.
Algebra.

Answers

Answer:

Number 7 is D and number 8 is A

Answer:

D. and D

Step-by-step explanation:

A rocket is the form of a circular cylinder closed at the lower end with a cone of the same radius attached to the top . The cylinder is of radius 2.5m and height 21m and the cone has the slant height 8m . Calculate the total surface area and the volume of the rocket

Answers

Answer:

V=462.076m ^3

Step-by-step explanation:

Determine which of the lines,if any, are parallel or perpendicular. Explain.

Answers

Answer:

B and A are parallel - their slopes are the same.

C is perpendicular to A and B - it's slope is the opposite of the reciprocal of A and B

Step-by-step explanation:

Jay is paid $12.50 per hour. Last week, his paycheck totaled $112.50. How many hours did he work? Write and solve an equation to represent the situation.

Answers

Answer:

9 hours

Step-by-step explanation:

If he earns 12.50 an hour...

112.50 ÷ 12.50 = 9 hours

Answer:

9 hours

Step-by-step explanation:

112.50 ÷ 12.50 = 9 or 9 hours

*WILL GIVE BRAINLIEST*

The sum of the areas of all the faces of a 3D object is called:

A: area
B: surface area
C: volume
D: perimeter

Answers

Answer:

b

Step-by-step explanation:

Answer:

Surface area

Step-by-step explanation:

Area is the space taken up by one surface plane

Volume is the amount of space taken up by the entire object

Perimeter is the length of all the edges of the shape combined

Students were asked how they travel to school. The graph shows the results of the survey. Based on the graph, how many students out of 300 students can be expected to walk or bike to school?

Answers

Answer:

we need the graph in order to find the answer.

Step-by-step explanation:


Help!!!! I WILL GIVE BRAINLIEST !!!!

Answers

I think it’s c sorry if I’m wrong

Round to the nearest hundredth:7.884

Answers

Answer:

7.88

Step-by-step explanation:

Hope this helps :D

When rounding to the nearest hundredth, the number 7.884 becomes 7.88.

To round 7.884 to the nearest hundredth, we look at the digit in the thousandth place, which is 8.

Now, If the digit to the right is less than 5, you simply drop all the digits to the right and keep the desired decimal place unchanged.

If the digit to the right is 5 or greater, you round up the desired decimal place by increasing it by one. Drop all the digits to the right.

Since 8 is greater than or equal to 5, we round up the digit in the hundredth place.

Therefore, when rounding to the nearest hundredth, the number 7.884 becomes 7.88.

Learn more about Rounding off here:

https://brainly.com/question/13391706

#SPJ6

PLEASE HELP ASAP!
Bowler World charges $5.00 to rent shoes and $1.10 per game. Lucky Spares charges $3.00 for shoes and $1.50 per game.
Part A
Drag numbers to complete a system of equations to represent the situation, using g for number of games and c for cost. Numbers may be
used once, more than once, or not at all.

Answers

Answer:

Here hopes this helped..

Step-by-step explanation:

What is the circumference of the circle shown below?

Answers

Answer:

A. 25.12 meters

..........

It is 50.24 you take the radius and multiply by two to get the diameter then you multiply that by pi-3.14 and you get the circumference

Hope this helps

What is the volume of the right triangular prism?
15 ft?
30 ft
150 ft
300 ft

Answers

Here's link to the answer:

tinyurl.com/wpazsebu

A fund-raiser at the school raises $617.50. They sent $580.45 to local charities. What percent of the money went to charities?

Answers

Answer:

94% of the money went to charities.

equation - 2(x-2) + 3 (4x-1)=0​

Answers

Answer:

2(x-2) + 3 (4x-1) = 0​

x = 1/2

Below is the data we gathered from class. Answer the questions based on this data.
Which time is closest to when
Tally
you wake up on a school
morning?
A. Before 5:30am
B. 6 am
C. 7 am
THUS
NAH STAN TH 14
HH HH NH NH HH 11
IS
D. 8 am
E. After 8:30am
1) (2 points) Find the frequency as a percentage of those who picked 8am. Show all steps.
Answer:

Answers

Answer:

its hard hard

Step-by-step explanation:

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