Answer:
Es creciente en los siguientes intervalos: [tex][-\infty,-1] U [1,\infty][/tex]
Es concavo hacia abajo en el intervalo: [tex][-\infty,0)[/tex]
Es concavo hacia arriba en el intervalo: [tex](0,\infty][/tex]
Step-by-step explanation:
Sea la función:
[tex]f(x)=x^{3}-3x-1[/tex]
Para determinar el intervalo de crecimeinto debes determinar la primer derivada de la función (f'(x)). El intervalo donde f'(x) > 0 es creciente.
La derivada de f(x) es:
[tex]f'(x)=3x^{2}-3[/tex]
Entonces es creciente en los siguientes intervalos:
[tex][-\infty,-1] U [1,\infty][/tex]
Ahora para determinar la concavidad debemos determinar la segunda derivada de la función (f''(x)). Si f''(x) > 0 la función es concava hacia arriba, si f''(x) < 0 la funcion es concava hacia abajo.
La segunda derivada de f(x) es:
[tex]f''(x)=6x[/tex]
Por lo tanto:
Es concavo hacia abajo en el intervalo: [tex][-\infty,0)[/tex]
Es concavo hacia arriba en el intervalo: [tex](0,\infty][/tex]
Espero te haya ayudado!
HELP ME PLEASE ASAP!!!!!!!!!!!!!!
Find the value of x in the isosceles triangle shown below.
please help owo
Answer:
10
Step-by-step explanation:
We will first take a right triangle and we will apply the pythagorean theorem to it. First, the base of the right triangle will be 12/2 which is 6; then, we will just use the theorem.
a^2+b^2 = c^2 (pythagorean theorem)
8^2+6^2 = c^2
100 = c^2
c = 10 because the square root of 100 is 10
Mr. Benitez sells houses. He gets a 6% commission on all sales.
How much commission would Mr. Benitez earn on a house that
sells for $400,000?
Answer:
$24,000
Step-by-step explanation:
$400,000 x 6%= $24,000
I WILL MARK BRAINLIEST TO MORE THAN ONE PERSON WHO HELPS
5)Suppose that the equation N(t)=500(0.02)^(0.7t) represents the number of employees working t years after a company begins operations. a) how many employees are there when the company opens (at t=0). b)how long until there are at least 100 employees working? c) according to this model as t gets larger(and heads towards+infinite) what value does N approach? That is in the long term, how many employees will be working at this company, according to this model?
Step-by-step explanation:
Given
No. of employees [tex]N(t)=500(0.02)^{0.7^{t}}[/tex]
(a)When the company opens i.e. at t=0
[tex]N(0)=500(0.02)^{1}=10[/tex]
There are 10 employees at the beginning
(b)when N=100
[tex]100=500(0.02)^{0.7^{t}}\\0.2=0.02^{0.7^{t}}[/tex]
Taking log both sides
[tex]\ln (0.2)=0.7^t \cdot \ln (0.02)[/tex]
[tex]0.7^t=\frac{\ln (0.2)}{\ln (0.02)}=0.4114[/tex]
again taking log
[tex]t\times \ln (0.7)=\ln (0.4114)[/tex]
[tex]t=\dfrac{\ln (0.4114)}{\ln (0.7)}=2.49[/tex]
(c)when t tends to [tex]\infty[/tex], [tex](0.7)^t\rightarrow 0[/tex]
So, [tex]N(\infty)=500\cdot(0.02)^0=500\times1=500[/tex]
i.e. there can be 500 employees at max
What is the value of (-1/2)^4?
-16
-1/16
1/16
16
Answer:
The answer for (-1/2)^4 is 1/16
U2+17u+72. Answer please
Answer:
I believe it's 19u+72
Step-by-step explanation:
Hope this helps! ^^
Answer:
(u + 8)(u + 9)
Step-by-step explanation:
Assuming you require to factorise the expression
u² + 17u + 72
Consider the factors of the constant term (+ 72) which sum to give the coefficient of the u- term (+ 17)
The factors are + 8 and + 9, since
8 × 9 = 72 and 8 + 9 = 17, then
u² + 17u + 72 = (u + 8)(u + 9) ← in factored form
Write the equation that passes through the point (-2,4) and has a slope of 7
Answer: See explanation
Step-by-step explanation:
Point slope formula = y - y₁ = m (x - x₁)
y - 4 = 7 (x + 2)
y - 4 = 7x + 14
Add 4 to both sides
y = 7x + 18
↑This is also the slope intercept form (y = mx + b)
Hope this helped!
PLEASE ANSWER PLEASE! ASAP Which speed is the fastest?
180 miles/18 hours
240 miles/6 hours
90 miles/2 hours
30 miles/1 hour
Answer:
It would be 90 miles/2, it's rate is 45 miles per hour
Answer:
90 miles/2 hours
Step-by-step explanation:
180/8 = 22.2mph
240/6 = 40mph
90/2 = 45 mph
30/1 = 30 mph
45 mph is faster than every other unit rate, therefore 90 miles/2 hours is the fastest.
Carole has $53.95 and washes cars for $8 each. Carole wants to attend a musical that costs $145.75.
a. Write and solve an inequality to determine the minimum number of cars Carole must wash to be able to buy the ticket to the musical.
Answer:
try adding them togeher
Step-by-step explanation:
Answer:
Carole has $53.95 and washes cars for $8 each. Carole wants to attend a musical that costs $145.75.
a. Write and solve an inequality to determine the minimum number of cars Carole must wash to be able to buy the ticket to the musical.
b. Is the answer to the question that same as the solution to the inequality? Explain.
2
SEE ANSWERS
Step-by-step explanation:
Which expressions are equivalent choose all that apply
PLEASE HELPP!!
The expressions that are equivalent to each other will be 7⁴, 7 · 7 · 7 · 7, and 7 to the fourth power. Then the correct options are A, B, and E.
What is an equivalent expression?The equivalent is the expression that is in different forms but is equal to the same value.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ 7 to the fourth power
This can be mathematically expressed as,
⇒ 7⁴
⇒ 7 · 7 · 7 · 7
⇒ 2,401
The expressions that are equivalent to each other will be 7⁴, 7 · 7 · 7 · 7, and 7 to the fourth power. Then the correct options are A, B, and E.
More about the equivalent link is given below.
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You want a loan for an awesome mansion in Houston, TX. The bank
agrees to give you a loan of $900,000 with a 5% interest rate for 8
years. How much will you pay in interest?
Answer:
360000
Step-by-step explanation:
Answer: You will pay 360,000,000
Step-by-step explanation:
900,000 • 0.05 • 8 = 360,000
change 5 to a decimal
Nikki dove into a pool and swam underwater the table shows how her depth changed during a 4 second time period which equation shows the relationship in the table between the time t,and depth d
Answer:
I think the answer is d = 1.5t
Step-by-step explanation:
If a number and it's inverse (ex. 8 and -8) are both x-values, is the relation still considered a function?
Answer:
well just cout
Step-by-step explanation:
los 1=-1 2=-2see easy
F(8) =11x + 3 what is the answer to this ?
Answer:
91
Step-by-step explanation:
11*8=88 +3=91
Answer: The answer would be 91
Step-by-step explanation: since it's originally f(x)=11x+3 and x=8
then you plug in for X.
f(8)=11(8)+3=91
BRAINLIEST PLS
PLEASE HURRY
Write 14% as a decimal.
7.14
7.14
0.14
0.14
1.4
1.4
750
Answer:
0.14
Step-by-step explanation:
To get this, you need to divide the number by a 100.
14/100 = 0.14
Therefore 14% is 0.14 as a decimal.
Hope that helped! :)
Think About the Process Use the algebra tiles to help you solve the equation 3x - 6 = 21. What is
the first step in solving the equation using algebra tiles? What is the solution to the equation?
What is the first step in solving the equation using algebra tiles?
O A. Divide each side of the model by 3.
OB. Add six - 1 tiles to each side of the model.
OC. Multiply each side of the model by 3.
Write an equation of the line with a slope of 2 and a y-intercept of 9.
Ali bought a music system for rs 6375.00 and spent rs 75.00 on transportation . He sold it for 6400.00 . Find his profit or loss percent
Answer: Loss percent = 0.775%
Step-by-step explanation:
Here,
Total cost = Purchasing price + transportation
⇒ Total cost = 6375 + 75
⇒ Total cost = $ 6450
Selling price = $ 6400
Total cost > Selling price, hence it is a loss.
Loss percent formula :
[tex]Loss\% =\dfrac{\text{Loss}}{Total\ cost}\times100\\\\=\dfrac{Total\ cost - Selling price}{Total \ cost}\times100\\\\=\dfrac{6450-6400}{6450}\times100\\\\=\dfrac{50}{6450}\times100=0.775\%[/tex]
Hence, Loss percent = 0.775%
What is the solution of the proportion 5/8=b/12
Answer:
15/2 I think
Step-by-step explanation:
Find the slope of the line that passes through (5,9) and (3,9)
Answer:
Since the Y coordinate is constantly 9, it is a horizontal line.
Step-by-step explanation:
Answer:
slope = 0
Step-by-step explanation:
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (5, 9) and (x₂, y₂ ) = (3, 9)
m = [tex]\frac{9-9}{3-5}[/tex] = [tex]\frac{0}{-2}[/tex] = 0
What statement best describes the function?
Answer:
d
Step-by-step explanation:
Plz i need help with this. It would really help if you help me with this (._.)
What is the area of this shape?
Seven times the sum of a number and 3 is 9.
what’s the answer for this question?
Answer: 4-2.1x
Step-by-step explanation:
The ratio of chairs to tables in a classroom is 5:1 Which statement must be true? A There are 5 chairs and 1 table. B There are 5 chairs for every 1 table. C There are 5 more chairs than tables. D There are 5 more tables than chairs.
Answer:
B
Step-by-step explanation
5:1 means for every 1 table their is 5 chairs.
And for every 5 chairs there is 1 table.
A right triangle has a leg of length 9 and a hypotenuse of length 17
yards. Find the length of the other leg (nearest tenth).
A rectangular park is 26 m long and 25m broad.Find it's area and cost of paving it with blocks costing Rs. 38 per m square.
Answer:
Area of park = 650m ²
Cost of setting blocks = Rs.24,700
Step-by-step explanation:
Given:
Length of park L = 26 m
Width of park B = 25 m
Find:
Area
Cost of Paving = 38 per m square
Computation:
Area of park = L x B
Area of park = 25 x 26
Area of park = 650m ²
Cost of setting blocks = Area of park x 38
Cost of setting blocks = 650 x 38
Cost of setting blocks = Rs.24,700
Can someone please help?? QUESTION: Write the phrase as an expression 13 subtracted from a number x An expression is.
Answer: x-13
Step-by-step explanation:
so 13 subtracted from x is x minus 13
Answer:
x - 13.
Explanation: An expression is a sentence with a minimum of two numbers and at least one math operation. This math operation can be addition, subtraction, multiplication, and division. Hope this helps ^-^.
A school is selling tickets to their Spring theater production Student tickets cost $6 each and non-student tickets cost $9 each There are a total of 250 seats available in the auditorium where the production will be held, and there are two different show times that people can choose to attend. The school is hoping to sell enough tickets to raise at least $2,700 for the theater department Let s represent the number of student tickets sold and let n represent the number of non-student tickets sold. Which points on the graph would lie within the solution region for the system of inequalities modeled by this situation?
Answer:
4x+3150-6x=2876
-2x=-274
x=137
y=525-137
y=388
Hence, about 137 childern tickets were sold and 388 gernal admission tickets were sold.
Paul.
The solution of the given situation is that about 137 childern tickets were sold and 388 admission tickets were sold.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
We are given that school is selling tickets to their Spring theater production Student tickets cost $6 each and non-student tickets cost $9 each There are a total of 250 seats available in the auditorium.
Let s represent the number of student tickets sold and let n represent the number of non-student tickets sold then the equation is;
4x+3150-6x=2876
-2x=-274
x=137
Now,
y=525-137
y=388
Hence, about 137 childern tickets were sold and 388 admission tickets were sold.
Learn more about equations here;
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