Step-by-step explanation:
an equation is a function, if it delivers for every possible input value x exactly one result value y.
b(x) = y = x² + 3
y - 3 = x²
x = sqrt(y -3)
our formally correct
y = sqrt(x - 3)
that is actually NOT a function, as a square root delivers for most x values 2 y values : a positive and a negative value.
d(x) = -9
that means for every possible value of x the result is -9.
reversing this means that the input value of -9 has infinitely many possible results
that is NOT a function.
m(x) = y = -7x
x = -y/7
or formally correct
y = -x/7
that is a normal function. every possible value of x leads to exactly one value of y.
p(x) = y = 1x¹ = x
y = x is its own inverse function.
and this is, of course, a function. every possible value of x leads to exactly one value of y.
Isabel pays a total of $50.00 for every 18 shirts she has dry-cleaned. Which 1 point
graph models a relationship with the same unit rate where x shirts are dry
cleaned for a total of y dollars. *
I need help ASAP!!!!!!!
Answer:
left side 7 right side 9
Step-by-step explanation:
it wont just let me tell you the answer
What is the domain of the function in this table?
A. {3, 4, 5, 6)
B. {2,4,5)
C. (3,4)
D. (3, 4), (4,4), (5,2), (6,5)
Answer:
3, 4 , 5 , 6 is your answer.
I HOPE IT WILL HELP YOU.
Thank you.
TEDDYLOVER....
A women buys a coat through the mail for $250 plus 9% sale tax. If another 10% is added onto this total for shipping and handling, what is the total cost of the coat ?
Answer:
Find 9% of 250 by turning 9% into a decimal.
.09 x 250 gives you 22.50
add 22.50 to 250
now you have 272.50
now find 10% of 272.50 by converting 10% into a decimal.
.10 x 272.50 gives you 27.25
Add that to 272.50 and you total cost is
$299.75
what is the
answer would love to now
Answer:
D
Step-by-step explanation:
It's between C and D.
3x^2 - 7x^2 = - 4x^2
- 4x^2 + 5x - 28 is the answer so it is D.
HELP ME SOMEONE IS CHASING ME HELP>>>>>
Answer:
Suppose NOL -> QRM is a reflection across the x-axis. If O(-3, 8) what is the y coordinate of R?
Step-by-step explanation:
Answer:
How do I help? This scenario makes no sense
Review the table showing the population of a city.
What are the values of a, b, and c for a logistic
regression model y =c/1+ae^-bx
that represents this population?
a = 27.47, b = 3.26, and c = 0.30
a = 3.26, b=0.30, and c = 27.47
a = -0.09, b = 4.53, and c = 2.81
a= -0.09, b = 2.81, and c = 4.53
Answer:
a = 3.26, b = 0.30, and c = 27.47
Step-by-step explanation:
It's B on Edge. 2021
Answer:
B: a = 3.26, b = 0.30, and c = 27.47
Step-by-step explanation:
Took the review
what is 54% of 114?
Answer:
54% of 114 is 61.56
Step-by-step explanation:
Answer:
that would be 1404/25 or 56.16
Step-by-step explanation:
I solved it on paper
What is the distance of Line S T?
7 km
StartFraction 128 Over 11 EndFraction km
22 km
49.5 km
The length of side ST of the triangle SRT using concept of similar triangles is; ST = 22 km
How to find Length of Similar Triangles?We are given a Triangle PQR.
In Triangle PQR, Side PQ = 16 kilometers and side PR = 24 kilometers.
In Triangle SRT, Side RT = 33 kilometers.
Using concept of ratio of similar triangles, we can say that;
ST/RT = PQ/PR
Thus;
ST = RT * (PQ/PR)
ST = 33 * (16/24)
ST = 22 Km
Read more about similar Triangles at; https://brainly.com/question/14285697
#SPJ2
Find the slope of the tangent line to the given polar curve at the point specified by the value of θ
r = 9 + 8 cos(θ), θ = π/3
The given curve has equation
r(θ) = 9 + 8 cos(θ)
and its derivative is
dr/dθ = -8 sin(θ)
When θ = π/3, we have r (π/3) = 13, and dr/dθ (π/3) = -4√3.
Differentiate these with respect to θ :
dy/dθ = dr/dθ sin(θ) + r(θ) cos(θ)
dx/dθ = dr/dθ cos(θ) - r(θ) sin(θ)
In polar coordinates, we have
y(θ) = r(θ) sin(θ)
x(θ) = r(θ) cos(θ)
and when θ = π/3, we have y (π/3) = 13√3/2 and x (π/3) = 13/2.
The slope of the tangent line to the curve is dy/dx. By the chain rule,
dy/dx = dy/dθ • dθ/dx = (dy/dθ) / (dx/dθ)
dy/dx = (dr/dθ sin(θ) + r(θ) cos(θ)) / (dr/dθ cos(θ) - r(θ) sin(θ))
When θ = π/3, the slope is
dy/dx = (-4√3 sin(π/3) + 13 cos(π/3)) / (-4√3 cos(π/3) - 13 sin(π/3))
dy/dx = (-4√3 (√3/2) + 13 (1/2)) / (-4√3 (1/2) - 13 (√3/2))
dy/dx = - 1/(17√3)
So, the tangent line has slope -1/(17√3) and passes through (13/2, 13√3/2). Using the point-slope formula, its equation is
y - 13√3/2 = -1/(17√3) (x - 13/2)
y = -(x - 338)/(17√3)
What is the sum of 3/7 + 1/3
Answer:
16/21
Step-by-step explanation:
1) Find the least common denominator (LCD) of 3/7,1/3. In other words, find the Least Common Multiple (LCM) of 7,3.
LCD=21
2) Make the denominators the same as the LCD
[tex]\frac{3*3}{7*3} +\frac{1*7}{3*7}[/tex]
3) Simplify. Denominators are now the same.
[tex]\frac{9}{21} +\frac{7}{21} \\[/tex]
4) Join the denominators
[tex]\frac{9+7}{21}[/tex]
5) Simplify
[tex]\frac{16}{21}[/tex]
Answer:
[tex]{ \tt{ \frac{3}{7} + \frac{1}{3} }} \\ \\ = { \tt{ \frac{(3 \times 3) + (7 \times 1)}{21} }} \\ \\ = { \tt{ \frac{9 + 7}{21} }} \\ \\ = \: \dashrightarrow \: { \tt{ \frac{16}{21} }}[/tex]
show work and ill mark brainliest :)
Answer:
parallel
Step-by-step explanation:
AB
m= 19-(-9)/8-(-6)
m=28/14
m=2
CD
m=0-(-4)/2-0
m=4/2
m=2
parallel:m1=m2
perpendicular:m1m2= -1
therefore its parallelWhat is the value of t?
Answer:
32°
Step-by-step explanation:
1) the sum of the angles is 180°. According to this rule the sum can be written:
t+(t+1)+[180-(t+33)]=180;
2) if to solve this equation, then
t=32°
Enter the equation in standard form. y = 6/5x- 8/5
The sum of two numbers is 45. The difference of the 2 numbers is 3. What is the product?
Answer:
21 and 24
Step-by-step explanation:
21+24=45
Step-by-step explanation:
please mark me as brainlest
Hello everyone i need ur help to factor out this in a easy way.
9514 1404 393
Answer:
(x -1/4)(x -1)(x +1)
Step-by-step explanation:
Pairs of coefficients have the same ratio, so it is likely that you can factor this by grouping pairs of terms.
x³ -x -1/4x² +1/4 = (x³ -x) -(1/4x² -1/4) . . . . . . note the signs
= x(x² -1) -1/4(x² -1)
= (x -1/4)(x² -1)
The difference of squares (x² -1) is a special form that has factors (x -1)(x +1)
Your factoring is ...
(x -1/4)(x -1)(x +1)
_____
Additional comment
The difference of squares factors like this:
a² -b² = (a -b)(a +b)
For a corporation that has 2,500,000 shares of stock, how may shares would be needed to be a majority stock holder ? *
Step-by-step explanation:
a majority starts at half of the total mass + 1.
so,
2,500,000 / 2 = 1,250,000
and + 1 means then the majority would be
1,250,001 shares.
Does the graph represent a function that has an inverse function
9514 1404 393
Answer:
No
Step-by-step explanation:
A horizontal line can be drawn that intersects the graph in more than one place. That means the graph fails the "horizontal line test" and does not have an inverse function.
(The horizontal line shown intersects in 3 places.)
PLS HURRY WILL GIVE BRAINLIEST!
Answer:
Y=-3/1x+7
Step-by-step explanation:
-3/1 is the slope, which is negative, and 7 is the y intercept ( the value that is marked at the middle of the y-axis).
A car travels at an average speed of 45 mph for 40 minutes.
The next part of the car's journey takes 25 minutes at an average speed of 60 mph.
Show that the average speed of the entire journey is just over 50 mph.
9514 1404 393
Answer:
the average speed is 50 10/13 mph
Step-by-step explanation:
The relationship between time, speed, and distance is ...
distance = speed × time
The distance traveled in the first part of the car's journey is ...
(45 mi/h)(2/3 h) = 30 mi
The distance traveled in the second part of the car's journey is ...
(60 mi/h)(25/60 h) = 25 mi
Then the total distance is 30 mi +25 mi = 55 mi.
The total time is ...
40 min +25 min = 65 min = 65/60 h = 13/12 h
The average speed for the trip is ...
speed = distance/time = (55 mi)/(13/12 h) = 660/13 mi/h = 50 10/13 mi/h
The average speed of the journey is 50 10/13 mi/h, just over 50 mi/h.
Steven has $50 yend on drinks for his coworkers. The
cholces are fresh orange juice, which costs $2 75 per
cup, and coffee, which costs $2.50 per cup. I Steven
spends $31 and purchases twice as many cups of coffee
as cups of orange juice, how many ops of orange julce
does he buy?
A-1
B-2
C-6
D-8
E-16
Answer:
I'm pretty positive it's C but I may be wrong, sorry if I am.
Step-by-step explanation:
What is the total price of a $45.79 item when a 7% sales taxe is added
Answer:
The total price after tax is $48.99
Step-by-step explanation:
Answer:
you have to put the 45.79/ 7% That's the taxes and you have to check your work first if you get something else different than a higher number you divide it again in long division and then if that doesn't work try to multiply in decimals
Graph the lines: y= 4x, y = – 4, and x = - 2.
Select all the statements that are true for the graph shown submarine's descent
An amount increased by 10% to 517.
What was the original amount?
Answer:
470
Step-by-step explanation:
x is the amount that represents 100 %
517 amount that represents 100%+10% increase = 110%
x = (517 *100) / 110 = 470 is the original amount
or
Joey bought 3 packs of white T-shirts and 5 packs of blue T-shirts for his basketball team. The white T-shirts come in packs of 9, and the blue T-shirts come in packs of 7. How many T-shirts did Joey buy in all?
What is an inequality to compare the temperatures of Mercury and Mars.
Answer:
Mercury > Mars
Step-by-step explanation:
Mercury orbits closer to the sun than Mars, so it has a higher surface temperature.
Place the following numbers in order from least to greatest -4.5, -3 5/6, square root of 16, -8/3, -2 pie
-2pi, -4.5, -3 5/6 , -8/3 , square root of 16
negative numbers are weird and go down greast to least and the square root of 16 is simply 4
Select the best answer for the question.
What's the correct letter name for <1 below?
A.
B.
C.
D.
Please help i really need it, i will give brainliest to the right answers
What is the value of 2^4 + 1/4||9x + 2|| when x = –2?
Answer:
-292 1/2
Step-by-step explanation:
PEMDAS
Perenthesis
2 To the power of 4 = 16 + 1/4 = 16/1 + 1/4 X -18