What’s the inverse f(x) = 2x-5
Answer:
25
Step-by-step explanation:
it's so easy to get to know
Step-by-step explanation:
Given
f(x) = 2x - 5
f^-1(x) = ?
we know
Let
y = f(x)
Or y = 2x - 5
Now Interchanging the role of x and y we get
x = 2y - 5
or 2y = x + 5
therefore y = (x+5) / 2
Therefore, f^-1(x) = ( x + 5 ) / 2
Hope it will help :)❤
I suck at math anybody willing to help me thru it all ? And please answer this it’s due now
Answer:
1
Step-by-step explanation:
they are the exact same, so y=x, or y=1x.
Can anyone help me with this ?
Answer:
D
Step-by-step explanation:
The 1220 feet is positive because the plane is above her.
The 14 feet is negative because the tree is below her.
Because you're comparing distances, you need the absolute value of both distances.
The absolute value of 1220 is 1220 and the absolute value of -14 is 14, so the absolute value of 1220 is greater than the absolute value of -14. The answer is D.
Two stores offer customers bulk DVD rates. Best Buy sells 6 CDs for $63 and Target sells 8 CDs for $96. Write the unit price for each store and then determine which store offers the better buy. Explain your reasoning.
Answer:
96÷8=12 so it wold be $12 per CD AND 63÷6=10.5 there for making the CD $10.5 making Best Buy your answe
A Pyramid is placed inside a prism as shown in the pyramid has the same base area B as a prison but half the height H of the prism which expression gives the volume of the pyramid
Answer:
D) V= 1/6 bh
Step-by-step explanation:
The expression that provides the volume of the pyramid is as follows;
As mentioned in the question
It is given that the pyramid put inside a prism
Also the pyramid contains the similar base area but the height is half of the prism
so the base area of the pyramid is b
And, the Height of the pyramid = h ÷ 2
Now as we know that
The volume of the pyramid is
V = 1 ÷3 × base ares × height
= 1 ÷ 3 × b × h ÷ 2
V = 1 ÷ 6 bh
So, the volume is 1 ÷6 bh cube unit.
Answer:
V = 1/6 BH
Step-by-step explanation:
the volume of a pyramid is 1/3 BH , since the pyramid is only half the height of the prism you'll have to multiply 1/3 x 2 = 1/6
*WILLL GIVE BRAINIEST TO COORECT RESPONCE*
how do i do this?
what is the answer?
Answer:
line mo
Step-by-step explanation:
Because the triangle are congrument
RST and MNO are the triangle
RT is a line in the RST triqangle
it is equal to the MO line in MNO
A family spends $520 every month on food if the family's income is 3 200 each month what percent of the inco.E is spent on food
Answer:
16.25% was spent on food
Step-by-step explanation:
Step one
given data
A family spends $520 every month on food
The family's income is $3200 Monthly
Required
We want to find the percentage of the income spent on food only
Step two
percentage spent on food= amount spent on food/income*100
percentage spent on food= 520/3200*100
percentage spent on food= 0.1625*100
percentage spent on food= 16.25%
=16.25%
OMG HELP OMG HELP OMG HELP
Answer:
a
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
3 bouquets of 3$ is 3*3 = 3^2
4 bouquets of 2$ = 2 * 4
Find the missing side lengths . Leave your answers as radicals in simplest form.
Does anybody knows how to do it cause I don’t so can y’all plz help me
Step-by-step explanation:
Question 9:
Hypotenuse = 7
Leg = Hypotenuse / √2 = 7/√2 = 7√2 / 2.
Therefore x = y = 7√2 / 2.
Question 10:
Leg = 10
Since x is also a Leg, x = 10.
Hypotenuse = Leg * √2 = 10√2. => y = 10√2.
Question 11:
Leg = 7
Since x is also a Leg, x = 7.
Hypotenuse = Leg * √2 = 7√2, => y = 7√2.
Select all the systems of equations that have exactly one solution.
y = 3x + 1
y = 3x + 7
y = 3x + 1
y = x+1
y=3x+1
y = 3x + 7
x+y=10
2x+2y=20
x+y=10
x+y=12
Answer:
b) y = 3x + 1
y = x+1
Step-by-step explanation:
Select all the systems of equations that have exactly one solution.
a)
y = 3x + 1
y = 3x + 7
y - 3x = 1.... Equation 1
y - 3x = 7...... Equation 2
We solve using Elimination
We Subtract Equation 2 from 1
(y - y ) - (3x - 3x) = 7 - 1
0 = 6
b) y = 3x + 1...... Equation 1
y = x +1...... Equation 2
x = y - 1
We substitute y - 1 for x in Equation 1
y= 3(y - 1) + 1
y = 3y - 3 + 1
y - 3y = -3 + 1
-2y = -2
y = -2/-2
y = 1
Solving for x
x = y - 1
x = 1 - 1
x = 0
x = 0, y = 1,
The Equations in b) have only one solution
c) x+y=10
x = 10 - y
2x+2y=20
We substitute
2(10 - y) + 2y = 20
20 - 2y + 2y= 20
-2y + 2y = 20 - 20
0 = 0
It has no solution
d) x+y=10.... Equation 1
x+y=12..... Equation 2
We solve using Elimination
We Subtract Equation 2 from 1
x - x + y - y = 12 - 10
0 = 2
Quinten paid 4.16 for a pound of taffy. If his sister purchases 3 ounces of the same candy, how much will she pay?
A quadratic equation x²+2(3x+p)=0 where p is a constant, has roots a and 2a, where a≠0
(a) find the value of a and of p
(b) hence, from a quadratic equation whose roots are a+1 and a-5
HELP ME PLISS
Answer:
a = -2 and p = 4.
Step-by-step explanation:
x²+2(3x+p)=0
x^2 + 6x + 2p = 0
For the general equation ax^2 + bx + c = 0, the sum of roots = -b/a and their product = c / a.
So here we have:
Sum of the roots:
a + 2a = -6/1 = -6
Product of the roots = 2a^2 = 2p/1 = 2p..
So 3a = -6 and
a = -2.
and
2(-2)^2 = 2p
8 = 2p
p = (-2)^2 = 4.
Answer:
see explanation
Step-by-step explanation:
Since x = a and x = 2a are roots, then substitute these values into the equation.
x = a
a² + 2(3a + p) = 0, that is
a² + 6a + 2p = 0 → (1)
x = 2a
(2a)² + 2(3(2a) + p) = 0
4a² + 12a + 2p = 0 → (2)
Solving simultaneously
Subtract (1) from (2) term by term to eliminate p
3a² + 6a = 0 ← in standard form
3a(a + 2) = 0 ← in factored form
Equate each factor to zero and solve for a
3a = 0 ⇒ a = 0
a + 2 = 0 ⇒ a = - 2
Since a ≠ 0 then a = - 2
Substitute a = - 2 into either of the 2 equations and solve for p
substituting into (1)
(- 2)² + 6(- 2) + 2p = 0
4 - 12 + 2p = 0
- 8 + 2p = 0 ( add 8 to both sides )
2p = 8 ( divide both sides by 2 )
p = 4
Thus a = - 2 and p = 4
--------------------------------------------
a + 1 = - 2 + 1 = - 1
a - 5 = - 2 - 5 = - 7
If x = - 1 and x = - 7 are roots then the corresponding factors are
(x + 1) and (x + 7) and the quadratic equation is the product of the factors, that is
(x + 1)(x + 7) = 0 ← expand left side using FOIL
x² + 8x + 7 = 0
Helpppp !!! Thank you have a great day :)
Answer:
4550$
Step-by-step explanation:
350$ times 13 would give you 4550
mark brainless please <3
Answer:
$4550
Step-by-step explanation:
$350 x 13 = $4550
Have a good day/night
just tell me which one.
Which table does NOT show a proportional relationship?
1 point
A
B
C
D
please help me please will give brainliest
do only 23 ,25,
by factoring
9514 1404 393
Answer:
23) x = ±3i, ±√2
26) x = 4/3, (-2/3)(1 ± i√3)
Step-by-step explanation:
23) Put in standard form to make factoring easier.
x^4 +7x^2 -18 = 0
(x^2 +9)(x^2 -2) = 0 . . . . factors in integers
Using the factoring of the difference of squares, you can continue to get linear factors in complex and irrational numbers:
(x -3i)(x +3i)(x -√2)(x +√2) = 0
x = ±3i, ±√2
___
26) This will be the difference of cubes after you remove the common factor.
81x^3 -192 = 0
3(27x^3 -64) = 0
(3x -4)(9x^2 +12x +16) = 0 . . . . . factor the difference of cubes
The complex roots of the quadratic can be found using the quadratic formula.
x = (-12 ±√(12^2 -4(9)(16)))/(2(9)) = (-12 ±√-432)/18 = -2/3 ± √(-4/3)
Then the three solutions to the equation are ...
x = 4/3, (-2/3)(1 ± i√3)
I need help with this. I do not understand it.
A model rocket is launched in the air. The quadratic function is modeled by the equation y = - 16x ^ 2 + 32x where is measuring time and y is the height of the model rocket. What is the max height the rocket reaches?
Answer:
The maximum height the rocket reaches is 16.
Step-by-step explanation:
You know that a model rocket is launched in the air and the quadratic function is modeled by the equation y = -16*x² + 32*x where x is measuring time and y is the height of the model rocket.
A quadratic function or function of the second degree is a polynomial function defined by:
y= a*x² + b*x + c
A quadratic function has a maximum or a minimum and the vertex formula is used to get the highest or lowest value of the function. When a> 0, the vertex of the parabola is at the bottom of it, being a minimum (that is, the parabola opens "upward"), and when a <0 the vertex is at the top , being a maximum (that is, the parable opens "downward").
The value of the vertex on the x-axis can be calculated with the expression [tex]x=\frac{-b}{2*a}[/tex]
The value of the vertex on the y axis must be obtained by substituting the value of the vertex on the x axis in the function y= a*x² + b*x + c
In this case, a= -16, b=32 and c=0. Since a<0 the vertex will indicate the maximum of the function.
The value of the vertex on the x-axis is [tex]x=\frac{-32}{2*(-16)}=1[/tex]
The value of the vertex on the y axis is:
y = -16*1² + 32*1
Solving:
y= -16*1 +32
y= -16 +32
y=16
The maximum height the rocket reaches is 16.
The midpoint of UV is point W. What are the
coordinates of point V?
so I've had a bad migraine all day and my homework is due tonight can somebody do it for me, please because I've just been putting it off and if it doesn't get done I'll get in trouble and get a zero for it I will give you 150 points whoever does my homework
A $260 suit is marked down by 30%. Find the sale price.
Answer: $78
Step-by-step explanation:
We start by doing 260 x 30.
260 x 30 = 7800.
Then we divide the product of 260 and 30 by the original percent, which is 100.
7800 divided by 100 = 78.
So the answer is 78
If you sleep 8 hours out of 24 hours, what percentage of the time do you sleep?
Answer:
33.33%
Step-by-step explanation:
8 out of 24 hours is equivalent to 1/3 which equals to 33.33%
Answer:
8/24 converted to a percentage = 33.333333333333%
An apple juice factory produced 830.87 gallons of apple juice in 4 days. How much apple
juice, on average, did the factory produce each day?
Answer:
207.7175
Step-by-step explanation:
take the 830.87 and divide it by 4 to see how much is made in 1 day. thats the average.
1. Evaluate x + 6 when x=7
Thank you!
Answer: 13
Step-by-step explanation: x =7 so u plug 7 in as x .and u do 7 plus 6 which gives u 13.
HOPE it helps ;)
Please please help please
Answer:
AB = BC = 4[tex]\sqrt{2}[/tex]
Step-by-step explanation:
This is a 45-45-90 triangle (right isosceles). This means that the side ratio is
1:1:[tex]\sqrt{2}[/tex], where AC is sqrt 2, and AB and BC are 1. Now, we need to plug this into our ratio. If sqrt 2 is 8, then 1 is x.
8/[tex]\sqrt{2}[/tex] = x/1 = x
x = 8/[tex]\sqrt{2}[/tex] = 4[tex]\sqrt{2}[/tex] (rationalized)
AB and BC are both 4 * sqrt 2
The answer is AB = BC = 4√2
how many points did this give you?
f.ck yo 50 points like dafawkkkk
Which exponential function has an x-intercept?
OA.
Rx) = 100X-5 - 1
OB.
Rx) = 38-4 + 2
OC.
R(x) = 7*-1 + 1
OD.
Rx) = -8X+1 - 3
Answer:
I would have to say D
Step-by-step explanation:
because it is a complete function
The function [tex]f(x)=100^{x-5}-1[/tex] has a x-intercept
How to determine the exponential functionFor an exponential function to have a x-intercept, the function must cross the x-axis
To determine the function, we simply plot them on a graph.
From the graph (see attachment), we can see that the graph of the function [tex]f(x)=100^{x-5}-1[/tex] crosses the x-axis.
This means that the function [tex]f(x)=100^{x-5}-1[/tex] has a x-intercept
Read more about exponential functions at:
https://brainly.com/question/11464095
Three friends are sharing the cost of a bucket of popcorn the total cost of the popcorn is 5.70. Which equation could be used to find them amount a in dollars that each friend should pay
Answer:
individual pay (a) = cost of popcorn / number of friends
Step-by-step explanation:
Assuming the cost of the popcorn is to be split evenly among the three friends, where all three friends are to split 5.70, the pay per friend is;
individual pay (a) = 5.70 (cost of popcorn) / 3 (number of friends)
ILL GIVE BRAINLIEST!!!!!
For questions 3 – 5, use the FOIL method to find the product of the binomials.
3. (2x + 3)(x + 1) 4. (x – 5)(3x + 2) 5. (x2 + 2)(5x + 1)
Answer:
The answer to question 3 is : 2x^2 + 5x + 3
Step-by-step explanation:
The FOIL method is multiplying the first variables, the outside variables, the inside variables and the last variables.
(2x + 3)(x + 1)
F = 2x times x = 2x^2
O = 2x times 1 = 2x
I = 3 times x = 3x
L = 3 times 1 = 3
2x^2 + 5x + 3
I'll leave the rest to you. You got this!
Answer:
1. 2x^2+5x+3 2.3x^2-13x-10 3.10^2+12x+2
Step-by-step explanation:
trust
and plz mark brainliest
What is the y-intercept of y = -3x
Answer:
0
Step-by-step explanation:
The y-intercept of y = -3x is zero.
Answer:
0
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
y = -3x
Step 2: Break Function
Identify Parts
Slope m = -3
y-intercept b = 0
*We assume that if the variable isn't there, it is 0 or being multiplied by 0.