Answers
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
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
https://imgur.com/a/GMyk3iX
Answers
Answer:What’s the link about ?
153 = 17x
That means x = 9
Evaluate a + 4 when a =87
Answers
Answer:
81
Step-by-step explanation:
a+4
Let a = 87
87+4
81
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)
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 formTo 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
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
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˚
What value of g makes the equation true?
Answers
Answer:
3
Step-by-step explanation:
g = 7-4 = 3
=> x²+3x -28
__
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.
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
x^(2)+x-20
splitting the middle term
Answers
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)
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:
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.
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%
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.
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
Write the names of all the months that have 31 days
Answers
Answer:
January, March, May, July, August, October, and December
can someone help please, giving brainlist to anyone who answers <3
Answers
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
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]
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
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]
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
What is the greatest common factor of 4 - 6а?
Answers
Answer:
GCF (4 ,6) = 2
Greatest common factor (GCF)
Step-by-step explanation:
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
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]
(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]
Which lists all the lines that are parallel to line s?
Answers
What is 1 5/7 - 1 2/5
Answers
Answer:
the answer to the question is = -9/35
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°