Answer:
i don't know the right answer plse
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
a
Step-by-step explanation:
the answer is a
A map has a scale of 1/2 inches=16 miles the distance between two parks on the map is 2 3/4 inches how many miles apart are the parks
Answer:
88
Step-by-step explanation:
HELP PLEASE FAST 15 and 16 how to solve PLEASE
Answer:
15. 6
16. 40
Step-by-step explanation:
Use the formula for pythagorus: c^2 = a^2 + b^2
15. 10^2 = 8^2 + b^2
100 = 64 + b^2
*minus 64 on both sides
36 = b^2
*square root both sides
b = √36 = 6
16. c^2 = 24^2 + 32^2
c^2 = 576 + 1024
c^2 = 1600
*square root both sides
c = √1600 = 40
Hope this helps :)
1) 164
2) 1600
because a^2 + b^2 = c^2 <3
evaluate the expression 8 ÷ t when t= 4
The graph of an exponential function passes through (1, 10) and (4, 80). Find the function that describes the graph.
Answer:
y = 5*2ˣStep-by-step explanation:
Exponential function:
y = abˣOrdered pairs given:
(1, 10) and (4, 80)Substitute x and y values to get below system:
10 = ab80 = ab⁴Divide the second equation by the first one and solve for b:
80/10 = b³b³ = 8b = ∛8b = 2Use the first equation and find the value of a:
10 = a*2a = 5The function is:
y = 5*2ˣAnswer:
[tex]y=5 \cdot 2^x[/tex]
Step-by-step explanation:
An exponential function is written in the form:
[tex]y=ab^x[/tex]We can use the given points that the exponential function passes through to solve for a and b.
Create a system of equations by substituting (1, 10) and (4, 80) into the exponential form of a function.
[tex]\text{I}:\ 10=ab^1[/tex] [tex]\text{II}: \ 8 0=ab^4[/tex]Divide Equation I by Equation II in order to cancel out variable a.
[tex]\displaystyle \frac{80=ab^4}{10=ab}[/tex][tex]8=b^3[/tex][tex]b=2[/tex]Now we can solve for a by substituting b back into either equation from the system of equations.
[tex]10=ab[/tex] [tex]10=a(2)[/tex] [tex]a=5[/tex]Substitute 5 for a and 2 for b into the form of an exponential function to find the exponential function that passes through (1, 10) and (4, 80).
[tex]y=5 \cdot 2^x[/tex]y = 5 · 2ˣ is the exponential function that describes the graph.
Which is the value of the rational expression 6-x/x+5 when x=2
Answer:
4/7
Step-by-step explanation:
6-x/x+5 let us take x=2
6-2/2+5=4/7
Please Help! :)
y = x times what
Answer:
Step-by-step explanation:
-8/32 = -1/4
The equation is : y = -1/4 x
Now they say, x = 28 so substitute x as 28 and solve
for when y = -5, substitute -5 as y and solve
Do this for all
What is the slope of the line below? Be sure to scroll down first to see all
answer options.
(-4, 10)
(4,-2)
A)-3
B -2/3
C) 2/3
D) -3/2
E)2
F ) -2
Answer:
D) [tex]\frac{-3}{2}[/tex]
The slope of the line m = [tex]\frac{-3}{2}[/tex]
Step-by-step explanation:
Step(i):-
Given that the points are (-4,10) and (4,-2)
we have to find that the slope of the line
Step(ii):-
Solution:-
[tex]m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
[tex]m = \frac{-2-10}{4-(-4) }[/tex]
[tex]m = \frac{-12}{8} = \frac{-3}{2}[/tex]
Final answer:-
The slope of the line m = [tex]\frac{-3}{2}[/tex]
The random variable X has the following probability density function: fX(x) = ( xe−x , if x > 0 0, otherwise. (a) Find the moment generating function of X. (b) Using the moment generating function of X, find E[Xn] for all positive integers n. Your final answer should be an expression that depends only on n.
Answer:
Follows are the solution to the given points:
Step-by-step explanation:
Given value:
[tex]\to f_X (x) \ \ xe^{-x} \ , \ x>0[/tex]
For point a:
Moment generating function of X=?
Using formula:
[tex]\to M(t) =E(e^{tx})= \int^{\infty}_{-\infty} \ e^{tx} f(x) \ dx[/tex]
[tex]M(t) = \int^{\infty}_{-\infty} \ e^{tx}xe^{-x} \ dx = \int^{\infty}_{0} \ xe^{(t-1)x} \ dx[/tex]
integrating the values by parts:
[tex]u = x \\\\dv = e^{(t-1)x}\\\\dx =dx \\\\v= \frac{e^{(t-1)x}}{t-1}\\\\M(t) =[\frac{e^{(t-1)x}}{t-1}]^{-\infty}_{0} -\int^{\infty}_{0} \frac{e^{(t-1)x}}{t-1} \ dx\\\\[/tex]
[tex]= \frac{1}{t-1} (0) - [\frac{e^{(t-1)x}}{(t-1)^2}]^{\infty}_{0}\\\\=\frac{1}{(t-1)^2}(0-1)\\\\=\frac{1}{(t-1)^2}\\\\[/tex]
Therefore, the moment value generating by the function is [tex]=\frac{1}{(t-1)^2}[/tex]
In point b:
[tex]E(X^n)=?[/tex]
Using formula: [tex]E(X^n)= M^{n}_{X}(0)[/tex]
form point (a):
[tex]\to M_{X}(t)=\frac{1}{(t-1)^2}[/tex]
Differentiating the value with respect of t
[tex]M'_{X}(t)=\frac{-2}{(t-1)^3}[/tex]
when [tex]t=0[/tex]
[tex]M'_{X}(0)=\frac{-2}{(0-1)^3}= \frac{-2}{(-1)^3}= \frac{-2}{-1}=2\\\\M''_{X}(t)=\frac{(-2)(-3)}{(t-1)^4}\\\\M''_{X}(0)=\frac{(-2)(-3)}{(0-1)^4}= \frac{6}{(-1)^4}= \frac{6}{1}=6\\\\M''_{X}(t)=\frac{(-2)(-3)}{(t-1)^4}\\\\M''_{X}(0)=\frac{(-2)(-3)}{(0-1)^4}= \frac{6}{(-1)^4}= \frac{6}{1}=6\\\\M'''_{X}(t)=\frac{(-2)(-3)(-4)}{(t-1)^5}\\\\M''_{X}(0)=\frac{(-2)(-3)(-4)}{(0-1)^5}= \frac{24}{(-1)^5}= \frac{24}{-1}=-24\\\\\therefore \\\\M^{K}_{X} (t)=\frac{(-2)(-3)(-4).....(k+1)}{(t-1)^{k+2}}\\\\[/tex]
[tex]M^{K}_{X} (0)=\frac{(-2)(-3)(-4).....(k+1)}{(-1)^{k+2}}\\\\\therefore\\\\E(X^n) = \frac{(-2)(-3)(-4).....(n+1)}{(-1)^{n+2}}\\\\[/tex]
Someone please help!! Please explain will mark brainliest
1) Trés empresas devem ser contratadas para realizar quatro trabalhos distintos em um condominio. Cada
trabalho será atribuido a uma única empresa e todas elas devem ser contratadas. De quantas maneiras distintas
podem ser distribuidos os trabalhos?
b) 18
C) 36
d) 72
a) 12
e) 108
Eu faço a mínima ideia fico
Answer:
la respuesta es la letra B amigo mio
ASIGNATURA: Matemáticos
Tema: Una respuesta inesperada
Instrucciones: Lena los espacios escribiendo el número que resulta de multiplicar el número
de la columna de la izquierda por cada uno de los números de la fila superior.
3
5
4
6
2
10
8
4
3
27
21
18
5
15
45
40
7
63
49
14
16
8
72
24
18
72
36
54
45
9
8
12
28
36
a) Los múltiplos de 3 son:
b) Todos los números pares son múltiplos de:
c) Los múltiplos de 5 son:
dos en negrita
Answer:
a) Los múltiplos de 3 son: 3,6,9,12,15,18,21,24,27
b) Todos los numeros pares son multiplos de: 2
c) Los múltiplos de 5 son: 5,10,15
Use the commutative property to write an expression equivalent to -5d + 1/2.
Answer:
1/2 + -5d
Step-by-step explanation:
The area of a cross section through the center of a sphere is 46 square inches. Find the surface area of the sphere.
Answer:
184 in.^2
Step-by-step explanation:
The cross section through the center of a sphere is a circle whose radius is equal to the radius of the sphere.
area of circle
[tex]A_{circle} = \pi r^2[/tex]
[tex] \pi r^2 = 46 [/tex]
[tex] r^2 = \dfrac{46}{\pi} [/tex]
[tex] r = \sqrt{\dfrac{46}{\pi}} [/tex]
[tex] r = 3.83 ~in.[/tex]
surface area of sphere
[tex] SA = 4 \pi r^2 [/tex]
[tex] SA = 4 \times \pi \times (3.83)^2 [/tex]
[tex] SA = 184~in.^2 [/tex]
evaluate -L{te-1 sin at}
Answer:
???????????????
hmmmmm
......,...
is the slope of a line that passes through the points (-3, 2) and (-6,5)?
Answer:
slope is -1
Step-by-step explanation:
In ΔKLM, the measure of ∠M=90°, the measure of ∠K=68°, and MK = 42 feet. Find the length of LM to the nearest tenth of a foot.
Answer:
x=103.9536≈104 feet
Step-by-step explanation:
Describe ways you can determine something is either linear or exponential. Be specific PLZ
also plz hurry i need help quick
Mrs. Melanie Lazo pays Php 15.75 for each hair clip to its supplier. She decided to adds markup of Php 3.15. What is the markup rate?
Answer:
the answer to the problem is 20.8%
help, please This is due in 5min's
Answer:
51
Step-by-step explanation:
The answer is 51 because since it is a 90 degree angle,you have to subtract 24+7 from 90 and that's your answer.
If someone can help me with this question i’ll thank them forever!!
Answer:
[tex]-\frac{3}{2}[/tex] < x or x > 4
Step-by-step explanation:
Convert the inequality to an equation.
2x² - 5x = 12
2x² - 5x - 12 = 0
Factor by grouping.
(2x + 3)(x - 4) = 0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
2x + 3 = 0
x - 4 = 0
Solve for x.
x = -3/2
x = 4
Use each root to create test intervals.
The solution consists of all of the true intervals.
[tex]-\frac{3}{2}[/tex] < x or x > 4
good luck, i hope this helps :)
Question 16
If n = 6, what is the value of 9n – 4?
Α.
11
B.
50
С
52
D
54
Answer is Option B) 50
9(6)-4
54-4
50
I need help! It’s angles !
Answer:
Angle 1= 106° and Angle 2=74°
Step-by-step explanation:
Angle 2 is 74° because lines a and b are parallel, and since there is a transversal, the 74° angle and angle 2 are corresponding angles.
Angles 1 and angle 2 are supplementary, so you would just do 180° - 74° and you get 106°
What is (-2) ÷ 9
A. - 2/9
B. 18
C. -18
D. 2/9
QUICK PLS PLS IM RUNNING OUT OF TIME
Answer:
A. -2/9
Step-by-step explanation:
the actual answer is -0.22222222222, but it is not listed so the next best answer is A
Answer:
The answer is -0.22222222222
Step-by-step explanation:
Im sorry but there is no other answer :(
Use the graph to solve the equation x2 - 2x - 8 = 0.
Answer:
Graph.
y = x^ 2 − 2 x − 8
y = 0
Help solve for X. I will give brainliest to the best answer!!! PLEASEEEE
Answer:
8
Step-by-step explanation:
So first do 104+76+104=284
Now form the equation 10x-4+284=360
It is 360 because this is a quadrilateral.
Now combine like terms.
10x+280=360
10x=80
x=8
Check 80-4=76
The other angle is 76 so you know your answer is correct
( 8 x 10^4) - ( 4 x 10^2) give the answer in standard form
Answer:
7.96x10^4
Step-by-step explanation:
You will get 796000 and you just move the decimal point infront to get 7.96x10^4
This relationship is a function.
2
4
5
6
5
6
8
13
True
O False
what is the slope of the line?
Answer:
In technical terms, the slope of the line is the change in y over the change in x. But I just like to think of it as rise over run. To find the slope of the line, pick two points on the line.
Step-by-step explanation:
pls solve this i cannot do it find x y z in the above
Answer:
x = 115
z= 40
y = 140
Step-by-step explanation:
x = 180 - (40 +25) = 115
z = 180 - (115+25) = 40
y = 180 - (40) = 140
Answer:
This is your answer!!!
Step-by-step explanation:
I attached a pic.
Hope it helps!!!