Pls pls help it would mean so much!!! The function is f(x)=x^2+4x-1
Tyyyyy

Pls Pls Help It Would Mean So Much!!! The Function Is F(x)=x^2+4x-1 Tyyyyy

Answers

Answer 1

Answer:

the function is decreasing on the interval (-∞,-2) and increasing on the interval (-2,∞)

B

Step-by-step explanation:

first we take the first derivative

x²+4x-1 = 2x+4

set this equal to 0 and solve

2x+4= 0

2x= -4

x= -2

we then have two intervals

(-∞,-2) u (-2,∞)

to find out whether something is decreasing on increasing on these intervals just plug in any number in the interval

if the result is positive it's increasing

if it's negative it's decreasing

Let's plug in x= -4 for the interval (-∞, -2)

2(-4)+4= -4

it's negative so it's decreasing on this interval

let's then plug in x=0 for the interval (-2,∞)

2(0)+4= 4

this is positive so it's increasing on this interval

So the function is decreasing on the interval (-∞,-2) and increasing on the interval (-2,∞)

which is equal to to B


Related Questions

A delivery service tells you it will deliver your package to a customer for a flat fee of $7.50,
plus $0.28 per mile from your business to the customer's location. The customer is located
53 miles from your business. What will it cost you to use the delivery service?

Answers

0.28*53+7.50=22.34 dollars

Guys I need help with this

Answers

Answer:

77

Step-by-step explanation:

10*2+9+3*4^2

10*2+9+3*16

20+9+48

20+57

77

Answer:

Solution is 769/25

Alternate form: 30.76

Step-by-step explanation:

convert decimal into fractions and than solve accordingly.

https://imgur.com/a/GMyk3iX

Answers

Answer:What’s the link about ?

180 = 5x + 12x + 27
153 = 17x
That means x = 9

Pls help I’ll give u some of those brain things

Answers

Answer:

THE ANSWER IS NOT C / 3

THE ANSWER IS "A"

Step-by-step explanation:

all the "hard" work is done (the numbers)...

lets start with the "units" at the end of the problem you have to have mm/day... so just start crossing out "top to bottom" when you see the same unit on the top and bottom... if you se day in the numerator and day in the denominator cross them out...

Do that and the one that has mm on the top and day on the bottom is the answer...

Step #2 ... two of the answers have that ... so now look for "silly fractions"

something like 1 year/ 999 days... your problem does not have totally silly things like that , but the WRONG answer has  1mm/ 10 cm (or something like that ) there is 10 mm in 1 cm, you choices has that opposit in one answer.

The histogram shows the number of laps completed by swimmers on a team during practice.
A. which interval contains the most values?
B. How many swimmers are on the team?
C. What percent of the swimmers swam more than 14 laps? Round o the nearest tenth of a percent.
Explain.

Answers

Answer:

A) 10-14

B) 45

C) 6.7%

Step-by-step explanation:

A) The interval that contain the most values can be gotten by looking at the histogram and selecting the interval with the highest frequency. Hence the interval 10-14 contains the most values because it has a frequency of 20.

B)The total number of swimmers is gotten by summing all the frequency of each individual lap. Hence:

Total swimmers on team = 10 + 12 + 20 + 0 + 3 = 45 swimmers

C) The percentage of swimmers who swam more than 14 laps = (number of swimmers that swam more than 14 laps/total swimmers) * 100%

The percentage of swimmers who swam more than 14 laps = [(0 + 3)/45] * 100% = (3/45) * 100% = 6.7%

if m 7=99 degrees and m 1=32 degrees then what is m 4 + m 5

Answers

Answer:

229°

Step-by-step explanation:

(180- 32) + (180 - 99)

148 +81

= 229°

can someone help please, giving brainlist to anyone who answers <3

Answers

the function is the second one :)
(2) is correct based on the equation that it shows

CAN SOMEONE HELP ME WITH THIS

Answers

Answer:

8 [tex]\frac{2}{3}[/tex]

Step-by-step explanation:

Find the LCD of the two fractions, which is six

3[tex]\frac{1}{2}[/tex] = 3 [tex]\frac{3}{6}[/tex]

---------------------------------------------------------------------------------------------------------------

5[tex]\frac{1}{6}[/tex] + 3 [tex]\frac{3}{6}[/tex] = 8[tex]\frac{4}{6}[/tex]

The next step is to reduce:

8[tex]\frac{4}{6}[/tex] = 8[tex]\frac{2}{3}[/tex]

---------------------------------------------------------------------------------------------------------------

Have a great summer :)

Answer:

Step-by-step explanation:

[tex]5\frac{1}{6} +3\frac{1}{2} =\frac{31}{6} +\frac{7}{2} \\=\frac{31+21}{6}\\=\frac{52}{6} \\=\frac{26}{3} \\=8\frac{2}{3}[/tex]

Omar's gas tank is 1/3 full. after he buys 9 gallons of gas, it is 5/6 full. How many gallons can Omar's tank hold?

Answers

Answer:

18 gallons

Step-by-step explanation:

First get a common denominator (6). So 3/6 are added to the tank when Omar buys 9 gallons of gas. That means for every 1/6, three gallons are added to the tank.

(x^2-5)(x+3)+(x+4)(x-x^2)

Answers

Answer:

-x-15

Step-by-step explanation:

Expand using the FOIL Method.

add me on Discord for step by step pls

[tex]\implies {\blue {\boxed {\boxed {\purple {\sf {-(x+15)}}}}}}[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}[/tex]

➺[tex]\:( {x}^{2} - 5)(x + 3) + (x + 4)(x - {x}^{2} )[/tex]

➺[tex] \: {x}^{2} (x + 3) - 5(x + 3) + x(x - {x}^{2} ) + 4(x - {x}^{2} )[/tex]

➺[tex] \: {x}^{3} + 3 {x}^{2} - 5x - 15 + {x}^{2} - {x}^{3} + 4x - 4 {x}^{2} [/tex]

Combining like terms, we have

➺[tex] \: {x}^{3} - {x}^{3} + 3 {x}^{2} + {x}^{2} - 4 {x}^{2} - 5x + 4x - 15[/tex]

➺[tex] \: - x - 15[/tex]

➺[tex]\: - (x + 15)[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}[/tex]

What is 1 5/7 - 1 2/5

Answers

Answer:

the answer to the question is = -9/35

Write the names of all the months that have 31 days​

Answers

Answer:

January, March, May, July, August, October, and December

Children who have lost some baby teeth have better arithmetic skills than children who have not lost any baby teeth. In fact, the more baby teeth a child has lost, the better his/her arithmetic skills tend to be.
Which of the following statements is most likely true?

1. There is no correlation between arithmetic skills and losing baby teeth.

2. There is a correlation here, and losing baby teeth causes arithmetic skills to improve.

3. There is a correlation here, and improving arithmetic skills causes the loss of baby teeth.

4. There is a correlation here, but there is not a direct causal relationship between losing baby teeth and arithmetic skills.

Answers

There is no coordination on a baby losing his teeth it just happens

What value of g makes the equation true?

Answers

Answer:

3

Step-by-step explanation:

g = 7-4 = 3

=> x²+3x -28

__


EXERCISE 22.2A
1 A heater uses 3 units of electricity in 40 minutes.
How many units does it use in 2 hours?
2 A machine prints 1500 newspapers in 45 minutes.
How many does it print in 12 hours?
3 A bricklayer lays 1200 bricks in an average 8-hour day.
How many bricks does he lay in a 40-hour week?
4 A combine harvester produces 9 tonnes of grain in 6 hours.
How many tonnes does it produce in 54 hours?
5 A machine puts tar on a road at the rate of 4 metres in 5 minutes.
a) How long does it take to cover 1 km of road?
b) How many metres of road does it cover in 8 hours?
181

Answers

Answer:

1. 6 units

2. 24,000 newspapers

3. 6,000 bricks

4. 81 tons

5. a) 1,250 minutes or 20 hours and 50 minutes

    b) 384 meters

Step-by-step explanation:

ill include a picture of my work if u need it. sorry if its messy, it's how my brain works

I been in this question for many hr pls help me ​

Answers

Answer:

D

Step-by-step explanation:

-3x^2+9x-6

because if it's roots are 1 and 2 since if you plug them in you get zeros and if you plug in 3 you get the point -6 corresponding to the point (3,-6)

Answer:

d

Step-by-step explanation:

the straight line y=5x-1 does not intersect the curve y=2x²+x+p.Find the range of values p.​

Answers

Step-by-step explanation:

yes friend and your answe is wring

How can you solve for X in the proportion of7/8 equals X/24

Answers

Answer and Step-by-step explanation:

The last answer choice is correct.

Set the product of 7 and 24 equal to the product of 8 and x, and then solve for x

The process being used in the last answer choice is called Cross multiplication, and is used to find the unknown value in fractions.

[tex]\frac{7}{8}[/tex] × [tex]\frac{x}{24}[/tex]

7 × 24 = 8x

168 = 8x

21 = x

#teamtrees #PAW (Plant And Water)

Number 36 pleaseee if you can

Answers

Answer:

option 2

Step-by-step explanation:

[tex]ax^2 + bx + c = 0\\Discriminant = b^2 - 4ac[/tex]

36. a = 3 , b = 5, c = 1

[tex]Discriminant = 25 - ( 4 \times 3 \times 1) = 25 - 12 = 13[/tex]

The answer should be : 13

Anotherrr Math questionn

Answers

Answer:

x=8

Step-by-step explanation:

4(x+11)=76

4x + 4(11) = 76

4x + 44 = 76

4x = 76-44

4x = 32

x = 32/4

x = 8

First divide 76 by 4 to cancel it out on both sides, your answer would be 19 subtract 11 from 19 and you have 8, 8 should be your answer

x^(2)+x-20
splitting the middle term

Answers

Are you trying to factorise this?

Here is a way you may not have been taught....
(x + a)(x + b) = x^2 + (a + b)x + ab

So you need to find two factors of -20 that add up to +1
-4 x 5 = -20 and -4 + 5 = 1. Perfect

x^2 + x - 20 = (x - 4)(x + 5)

what is the range of the function graphed below?

i honestly have no idea please help

Answers

Answer:

C

Step-by-step explanation:

The range of a graph is how far the graph goes up and down. The lower boundary is easy, as we can see that the left side of the line goes down forever, so it is negative infinity. Looking at the top of the graph, we can see that the graph never goes past y=2. So the answer is:

-∞<y<2

it is definitely is c

Question 1 (1 point)

Find the probability of the pointer landing on a new house.

New Car

New House

60 120

$10,000

New Boat

Оа

1

6

Ob

1

3

Ос

60

Od

1

Ā

Answers

Answer:

[tex]P(New\ House) = \frac{1}{6}[/tex]

Step-by-step explanation:

Given

See attachment

Required

[tex]P(New\ House)[/tex]

This is calculated as:

[tex]P(New\ House) = \frac{New\ House}{Total}[/tex]

From the attachment, we have:

[tex]New\ House = 60^o[/tex]

[tex]{Total}= 360^o[/tex] --- total angle in a pie chart

Note that the measurements must be converted to degrees (if not already in degrees).

So, we have:

[tex]P(New\ House) = \frac{60}{360}[/tex]

Simplify

[tex]P(New\ House) = \frac{1}{6}[/tex]

Help
Help
Help
Help
Help
Help

Answers

Answer:

105˚, 75˚

Step-by-step explanation:

<2 is 75˚ by same side angles of a transversal.

<1 is supplementary to <2 so 180-75 = 105˚

factorise completely 15p^2 + 24pt​

Answers

Answer:

3p(5p + 8t)

Step-by-step explanation:

15p^2 + 24pt

3(5p^2 + 8pt)

3p(5p + 8t)

The completely factored form of 15p^2 + 24pt is 3p(5p + 8t).

How to determine the factored form

To factorize the expression 15p^2 + 24pt using superscripts, we can follow the same steps as before.

First, let's find the GCF of the coefficients 15 and 24, which is 3:

GCF(15, 24) = 3

Next, we'll look for the GCF of the variables p^2 and pt, which is p:

GCF(p^2, pt) = p

Now, we can factor out the GCF from each term:

15p^2 + 24pt = 3p(5p + 8t)

Therefore, the completely factored form of 15p^2 + 24pt is 3p(5p + 8t).

Learn more about factorization at

https://brainly.com/question/25829061

#SPJ2

Evaluate a + 4 when a =87​

Answers

Answer:

81

Step-by-step explanation:

a+4

Let a = 87

87+4

81

Which lists all the lines that are parallel to line s?

Answers

only lines t,u and v

I’m the parallelogram above, what is the value of x+y

Help please

Answers

Answer:

x + y = 248

Step-by-step explanation:

Using the property : Sum of co- interior angles = 180

[tex]\angle y + 56 = 180\\\\\angle y = 180 - 56 = 124\\\\\angle x + 56 = 180\\\\\anle x = 180 - 56 = 124\\\\\angle x + \angle y = 124 + 124 = 248^\circ[/tex]

The value of 'x' and 'y' are 124° and 124°, respectively. Thus, the value of the expression x + y will be 248°.

What is a parallelogram?

It is a polygon with four sides. The total interior angle is 360 degrees. A parallelogram's opposite sides and angles are parallel and equal.

According to the definition, the value of 'x' and 'y' will be equal.

And the sum of adjacent angles will be 180 degrees. Then the equation is given as,

x + 56° = 180°

x = 124°

The sum of 'x' and 'y' is given as,

x + y = 124° + 124°

x + y = 248°

More about the parallelogram link is given below.

https://brainly.com/question/1563728

#SPJ2

What is the greatest common factor of 4 - 6а?

Answers

Answer:

GCF (4 ,6) = 2

Greatest common factor (GCF)

Step-by-step explanation:

Can someone explain this to me. am i supposed to input the x=4 into each X spot or what???

Answers

Answer:

I think so

Step-by-step explanation:

Im kinda cunfused too

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