Answer:
x = - 1, x = 8
Step-by-step explanation:
Given
8 + 7x - x² = 0 ( multiply through by - 1 and arrange into standard form )
x² - 7x - 8 = 0 ← in standard form
(x - 8)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 1 = 0 ⇒ x = - 1
x - 8 = 0 ⇒ x = 8
Given f(x) = 2x 2 +4x -3, find f(2a+3)
Answer:
f(2a + 3) = 8a² + 20a + 27
Step-by-step explanation:
f(x) = 2x² + 4x - 3
f(2a + 3) = 2(2a + 3)² + 4(2a + 3) - 3
f(2a + 3) = 8a² + 12a + 18 + 8a + 12 - 3
f(2a + 3) = 8a² + 20a + 27
The value of f(2a+3) for the given function f(x) = 2x² + 4x - 3 will be 8a² + 20a + 27.
What is a function?A certain kind of relationship called a function binds inputs to essentially one output.
In other words, the function is a relationship between variables, and the nature of the relationship defines the function for example y = sinx and y = x +6 like that.
Given the function f(x) = 2x² + 4x - 3
⇒ f(2a + 3) = 2(2a + 3)² + 4(2a + 3) - 3
⇒ f(2a + 3) = 2(4a² + 9 + 6a) + 8a + 12 - 3
⇒ f(2a + 3) = 8a² + 18 + 12a + 8a + 12 - 3
⇒ f(2a + 3) = 8a² + 20a + 27.
Hence "The value of f(2a+3) for the given function f(x) = 2x² + 4x - 3 will be 8a² + 20a + 27".
For more about the function,
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A car was bought for $20 000 in January 2017. If the car depreciates by 10% every year, what was it worth in January 2020?
A) $2 000
B) $1 800
C) $18 000
D) $14 580
Answer:
D
Step-by-step explanation:
20,000-10%-10%-10%
is
20000-2000-1800-180
which is 20000-5980
which is 14580
which is D
Hope this helps ;D
Answer:
The answer is D) $14,580
Step-by-step explanation:
If its losing 10% each year that means the first drop would be to $18000, then the next to 16200, then the last is 14580.
Jaycee bought 6 pounds of steak. The steak cost $4.95 per pound. How much
did Jaycee pay for the steak?
Answer:
Jaycee paid $29.70 for 6 pounds of steak.
Step-by-step explanation:
You multiply the number of pounds times the cost per pound.
$4.95 * 6 = 29.70
factorise fully 2x^2 -6x??????????
Answer:
2x(x - 3)
Step-by-step explanation:
Given
2x² - 6x ← factor out 2x from each term
= 2x(x - 3)
Select the table representing a linear function. (Graph them if necessary.)
Answer:
The answer is A
Step-by-step explanation:
Solve -36 = j + 13 for j.
j =
Answer:
The answer is -49.
Hope this helps and if you could mark this as brainliest. Thanks!
How do I solve this equation?
A ticket for the spring musical is $4.50. Which table show the relationship between the number of tickets purchased and the total price paid?
Answer:
mwe.n pa konen men tenyen ooooo
please help asap! xoxo
Answer:
A. x = 6
Step-by-step explanation:
a^2 + b^2 = c^2
8^2 + b^2 = 10^2
64 + b^2 = 100
b^2 = 100 - 64
b^2 = 36
√b^2 = √36
b = 6
5) 6x + 5y =-15
Need help it’s writing linear equations!!
Answer:
the Slope is -6/5 and y is (0,-3)
Step-by-step explanation:
we need to put this equation in y = mx + b
6x - 5y = -15 u will subtract 6x from both sides
5y = -6x -15...divide both sides by 5
and then simplify
y = -6/5x - 3
and when u graph its will be (0,-3)
ur slope(m) = -6/5 and ur y int (b) = -3
Some countries can not efficiently produce goods because they have old, outdated, machinery. Based on this information, what would MOST improve the county's economy?
A increased barriers to trade
B investment in capital goods
C investment in human capital
D increased government regulation
Answer:
B
Step-by-step explanation:
Which two points should the line of best fit go through to best represent the data in the scatter plot?
A. (1,3) and (2,7)
B. (1,3) and (6,13)
C. (3,8) and (5,12)
D. (5,12) and (6,13)
Answer: the answer is c I think
Step-by-step explanation:
Does anybody know advanced trig???
jk this is for kaitlynn have a good one u guys :)
Answer:
yeno
Step-by-step explanation:
Advance trigonometry covers the inverse trigonometric functions, solving equations involving trig concepts, and additional identities, including those of double and half angles Topics include: The Inverse Sine Function.
Answer:
Well even if it was a joke, I don't know it but I can tell you a few things about it
Step-by-step explanation:
1. It covers the inverse trigonometric functions
2. It's solving equations involving trig concepts
3. 3 identities for trig are sine, cosine, and tangent
select the construction taht guarantees A is a reflection of point A across line BC
is there a picture or anything?
Write a polynomial function that has the given zeros.
1/2, 1 , 5
Answer:
1
Step-by-step explanation:
x²-1²...it can be written as (x+1),(x-1)...surely you will get -1 and 1 as your zero
Rewrite this percent as a decimal:
80%
Answer:
.80
or
0.80
Step-by-step explanation:
80 is out of 100, which is other words is .80 or 0.80
PLEASEEE HELPPP I NEED THIS TODAY!!
Answer:
you can look up these online it will give u the diagram and u can put it in on calculators I used to do that
A ≈ 452.39
Hope you get a good grade
James used the airport people-mover to get between terminals. He moved 6600 feet in 2 minutes. After 3 minutes, he had moved 9900 feet. The unit rate is measured in feet per minute. What is the constant of proportionality? O A. 1100 O B. 6600 O C. 3300 O D. 2200 HINT SUBMIT
Answer: C. 3,300 feet per minute
Step-by-step explanation:
Answer/Step-by-step explanation:
Rate of change = y/x
9,900 - 6,600 = 3,300
3 - 2 = 1
So, the unit rate of change is 3,300.
Considerando que cada semana se van acumulando los amigos de la semana anterior. ¿Cuántos amigos se fueron uniendo por semana ? Suponiendo que cada semana fueran nuevos amigos cuántos tendría en total? En este mismo supuesto ¿En qué semana alcanzara más de la mitad de Seguidores que acumulo en las doce semanas?
Answer:
1. Amigos nuevos cada semana: 7, 8, 4, 4, 5, 4, 3, 5, 8, 2, 7, 7
2. 418 amigos en total.
3. En la Semana 9 se alcanzan 247 amigos.
Step-by-step explanation:
He agregado una imagen adjunta con la tabla de datos necesarios para esta pregunta. En la misma se indican la cantidad de amigos o seguidores para cada semana, de un perfil de una red social hipotética.
1. Considerando que cada semana se van acumulando los amigos de la semana anterior. ¿Cuántos amigos se fueron uniendo por semana.
En este caso indica que los amigos se van acumulando cada semana, por lo que la tabla indica los amigos totales del perfil. Para saber cuantos se han agregado cada semana, debemos restar el valor de una semana dada con el valor de la semana anterior. Por ejemplo para la semana 1 indica 7 amigos y para la semana 2 indica 15 amigos, la cantidad de amigos nuevos en la semana 2 es:
semana2 - semana1 = 15 - 7 = 8 nuevos amigos
Los resultados para las semanas 1 a la 12 son:
7, 8, 4, 4, 5, 4, 3, 5, 8, 2, 7, 7
En el archivo excel adjunto (resultados.xlsx) se indican todos los resultados para las 12 semanas.
2. Suponiendo que cada semana fueran nuevos amigos ¿Cuántos tendría en total?
En este supuesto, la tabla de datos indica la cantidad de nuevos amigos cada semana, por lo que para calcular cuantos amigos tendrá en total luego de las 12 semanas se deben sumar todos los valores:
semana1 + semana2 + semana3 +...+...+semana12 = 418 amigos en total
3. En este mismo supuesto ¿En qué semana alcanzara más de la mitad de Seguidores que acumulo en las doce semanas?
Con el mismo supuesto anterior, primero debemos calcular la mitad de amigos totales que alcanzará. Ya hemos calculado que tendrá 418 amigos, por lo que la mitad será:
418÷2 = 209 amigos
Ahora debemos ir sumando los amigos semana a semana, hasta alcanzar un valor igual o mayor a la mitad (209). Eso nos indicará en que semana se supera mas de la mitad de seguidores. Haciendo la operación:
semana1+semana2+semana3+...+...
encontramos que en la semana 9 se alcanzan 247 amigos, superando la mitad calculada anteriormente.
Se pueden ver los detalles en el archivo adjunto resultados.xlsx
Helps me solve this problem please
Answer:
(1,1) and (-2,-11) are the correct solutions
Answer:
D. (1, 1) and (-2, -11)
Step-by-step explanation:
A's answers:
Coordinates: (0, -3) and (-1, -1)
Equations when they get solved:
4(0)-3=-3 (correct)
4(-1)-3=-1 (incorrect)
B's answers:
Coordinates: (-2, -5) and (2, 5)
Equations when they get solved:
4(-2)-3=-11 (incorrect)
4(2)-3=5 (correct)
C's answers:
Coordinates: (0, 3) and (3, 9)
Equations when they get solved:
4(0)-3=-3 (incorrect)
4(3)-3=9 (correct)
D's answers:
Coordinates: (1, 1) and (-2, -11)
Equations when they get solved:
4(1)-3=1 (correct)
4(-2)-3=-11 (correct)
Please help no one has answered this I really do appreciate answers!
Answer:
[tex]8x^{9}[/tex]
Step-by-step explanation:
to solve [tex](2x^{3} )^{3}[/tex], you multiply the exponents and do [tex]2^{3}[/tex].
2x+3y=15
x+y=6
work out the value of x and y
Answer: x=3, y-3
Step-by-step explanation:
I would use elimination
Multiply second equation by 2
2x + 2y = 12
2x + 3y = 15
Subtract both
-1y = -3, y = 3
Plug in 3 for y in any equation
x + 3 = 6, x = 3
Final answer: x = 3, y = 3
Enjoy!!
0=6(b+6)-6(b+8) How many solutions giveing brainlest
Answer:
There is no solution
Step-by-step explanation:
-12 does not equal 0
what is (3+7)x 6+4 using pemdas
Answer:
64
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
P.E.M.D.A.S. stands for parentheses, exponents, multiplication, division, addition, and subtraction
so first do the parentheses (3+7) = 10 which leaves 10×6+4 then since their is no exponents do multiplication which is 10×6=60 which leaves 60+4 finally since their is no division do addition 60+4=64
Find the length of AD
5/x = 10/12
10x = 5•12
10x = 60
x = 60/10
x = 6
please help me in this question
Step-by-step explanation:
fifth row=19+4=23
sixth row= 23+4=27
Answer:
d
Step-by-step explanation:
x= previous term +4
7+4=11
11+4=15
15+4=19
19+4=23
23+4=27
hopefully this helps :)
m < JH I= (2x+7) and m
!!!!!!!!!!!!!!!!???????????
Using the function, g(x) = 5x - 2 and the domain below, state the range.
Domain: {-3, -1, 0, 2}
Answer:
{2-,-3,5.5}
Step-by-step explanation:
g(x) = 5x - 2
Domain: {-3, -1, 0, 2}
Range: Subtract the minimum data value from the maximum data value to find the data range. In this case, the data range is 2 − − 3 = 5 . 5
Astrology is pseudoscience. What can you conclude about the claims made by astrology? A. They are based on logical reasoning B. They are based on unscientific methods. C. They are based on critical thinking, D. They are based on repeated evaluation.
Answer:
B
Step-by-step explanation:
No correlation has ever been found. Scientific disciplines based on hypothesis but with no consistent body of supporting evidence are called pseudoscience. Astrology is one of them. Effects of astrology do not exist in the Universe.
Select ALL the options that have the same value as 3 1/2% of 20.
Answer:
A, D, E
Step-by-step explanation:
They all equal 0.7.
Answer: 1st, 3rd, and 5th.