Answer:
Speed of car (M) = 65 Unit/hour
Step-by-step explanation:
Given:
Speed equation;
455 = Mx
Time taken (x) = 7 hours
Find:
Speed of car (M)
Computation:
455 = Mx
455 = M(7)
Speed of car (M) = 65 Unit/hour
F(x)=3x-2 find f^-1(x) than find f^-1(13)
Answer:
see explanation
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 3x - 2 ( add 2 to both sides )
y + 2 = 3x ( divide both sides by 3 )
[tex]\frac{y+2}{3}[/tex] = x
change y back into terms of x with x = [tex]f^{-1}[/tex] (x)
[tex]f^{-1}[/tex] (x) = [tex]\frac{x+2}{3}[/tex]
To evaluate [tex]f^{-1}[/tex] (13) substitute x = 13 into [tex]f^{-1}[/tex] (x) , that is
[tex]f^{-1}[/tex] (13) = [tex]\frac{13+2}{3}[/tex] = [tex]\frac{15}{3}[/tex] = 5
Maggie goes to two different stores to shop for t-shirts. Both stores are having a sale.
At Store A, t-shirts are regularly priced at $22 but are on sale for 25% off.
At Store B, t-shirts are regularly priced at $30 but are on sale for 45% off.
Which of the following is true about the sale price of a t-shirt at the two stores?
A. Store B has the better price because 45% is greater than 25%.
B. Store A has the better price because $22 is less than $30.
C. The sale price is the same for both stores.
D. The sale price cannot be determined.
Answer:
store B
Step-by-step explanation:
find the value of x
PLZ
Answer:
x=21
Step-by-step explanation:
wow this waz ez
The table shows the different prices at a diner.
Sandwich $5
Drink $2
Dessert $3
What is the total cost for both customers?
a $10
b. $20
c. $25
d. $35
Which symbol should go in the blank
8x 5/4 __8
Answer:
it should be x
Step-by-step explanation:
hope this helps
need help ty I’ll give brainliest
Answer:
120
Step-by-step explanation:
all angles of a triangle add up to 180. 180-15-45= 120.
:D
brainliest pls
Given :
Measure of an angle = 15°
Measure of the second angle = 45°
Let the measure of the third angle be x.
We know that :
▪︎Sum of all angles of a triangle = 180°[angle sum property]
Which means :
[tex] =\tt 15 + 45 + x = 180[/tex]
[tex] =\tt 60 + x = 180[/tex]
[tex] =\tt x = 180 - 60[/tex]
[tex]\hookrightarrow\color{plum}\tt \: x = 120°[/tex]
Thus, the measure of the third angle = 120°
Since the sum of all these angles is equivalent to 180°[15+45+120=180] we can conclude that we have found out the correct measure of the third angle.
Therefore, the correct option is (C) 120
erold’s weekly pay rate is $865. He receives a 25% pay raise. How can Jerold calculate his new weekly pay rate? Select all that apply.
A divide $865 by 0.25
B divide $865 by 1.25
C multiply $865 by 0.25
D multiply $865 by 1.25
E Solve for x: x···8655 125···100
F Solve for x: 865···x5 25···100
Answer:
D
Step-by-step explanation:
865 increase 25% =
865 × (1 + 25%) = 865 × (1 + 0.25) = 1081.25
If tn=18√t, what value of n makes this equation true?
Answer:
1/18
Step-by-step explanation:
What is the y-intercept of the graph? *
Answer:
it's 5 cause it meet the y axis
CAN SO ONE PLS HELP ME whats (2-3x4)9+22
Answer:
The answer is = 112
Step-by-step explanation:
3x4 = 12
12 - 2 = 10
10 x 9 = 90 .,. when there is a ) next to a number you multiply
90 + 22 = 112
Which expression is equivalent to 12 x + 3 ( x − 2 )
Answer:
15x - 6
Step-by-step explanation:
To solve this, Given the expression 12 x + 3 ( x − 2 )
To simplify, expand
12 x + 3 * x −3 * 2
Knowing that
- * + = -
then the expression becomes
= 12 x + 3x - 6
= 15x - 6
The expression given is equivalent to 15x - 6
X²-8x+16=(x-?)(x-?) Can u help me
Answer:
Step-by-step explanation:
(x-4)(x-4) or (x-4)^2
How do you add fractions and whole numbers together? For example 1/4+2
Answer:
2.25 or 2 1/4
Step-by-step explanation:
Easy. you add them like regular numbers. 1/4 + 2 = 0.25 + 2 =2.25 and/or 2 1/4
ill
Simplify each expression:
1. 2x + 4x-5 - +10
2. 4( 5x - 11) - (2x + 11)
3. 5.6y + 9.2x -3.3y +11 - 2x -13
Llam
Is this a right triangle?
Use the Pythagorean Theorem to find out!
20 cm
21 cm
29 cm
Yes
No
Answer:
Yes
Step-by-step explanation:
29×29=841
21×21=441
20×20=400
29^2-21^2=20^2
841-441=400
400=400
Yes it is a right angle triangle
Y = 4( x + 2)^2 - 8
Convert the equation from vertex form to standard form.
Answer:
hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
After learning how to fly, Wendy reduced her daily commute time by
75
%
75%75, percent. Previously, her commute took
m
mm minutes.
Answer:
3/4m
Step-by-step explanation:
The function y=-2(x-2)^(2)+6 shows the daily profit (in hundreds of dollars) of a hot dog stand, where x is the price of a hot dog (in dollars). Find and interpret the zeros of this function.
Select two answers: one for the zeros and one for the interpretation.
The answers are:
Answer:
C. Zeros at x = 2 ± √3, and D. The zeros are the hot dog prices that give $0.00 profit (no profit).
What is 2.35 rounded to the nearest hundredth.
2.35 is already rounded to the nearest hundredth.
value? Hint: Rationalize the denominator and
4/4 - sqr6x
Answer:
The Answer is A
Step-by-step explanation:
I'm 100% right.
Gavin wants to buy a jacket that sells for $38.95. An advertisement says that next week that jacket will be on sale for $22.50. How much will Gavin save if he waits until next week to buy the jacket?
Answer: Gavin will save $16.45 if he waits until next week to buy the jacket.
Step-by-step explanation:
Given: Current Market price of jacket = $38.95
Sales price next week = $22.50
Amount he can save = (Current Market price of jacket)- (Sales price next week )
i.e. Amount he can save = $ (38.95-22.50)
i.e. Amount he can save = $ 16.45
Hence, Gavin will save $16.45 if he waits until next week to buy the jacket.
NEED HELP ASAP
ILL MARK BRAINLIEST
please help (if you can)
what s the vertex y=3x^2-18x +30
Answer:
(3,3)
Step-by-step explanation:
Rewrite in vertex form and use this form to find the vertex ( h , k ) .
Work out the size of angle x
Which value of x is a solution to this equation? 5 x 2 - 36 x + 36 = 0
Explain how to write a quadratic equation given the vertex and another point on the graph, in the form of ()=(−ℎ)2+, vertex form.
Vertex: (−4,6)and point (−3,3)
Negative five times a number is less than the sum of negative six times the number and 12
Answer:
-5 x X < -6x + 12
Step-by-step explanation:
I THINK im not really used to this but yes this is my expression i would present.
HELP!!
If we changed the -3 to a 3 in the equation, what would happen to the graph?
Answer:
It would change the y-intercept, so if it turned into a 3, the slope would just go higher at the beginning.
Step-by-step explanation:
Hope it helps!
The graph of the new equation y = 2ˣ⁻⁴ + 3 will have the same shape as the original graph, but it will be shifted 4 units to the right and 3 units up.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
The equation y = 2ˣ⁻⁴ - 3 is an exponential function that has been shifted 4 units to the right and 3 units down from the basic exponential function y = 2ˣ.
If we change the -3 to a 3, we get the new equation:
y = 2ˣ⁻⁴ + 3
This new equation represents the original exponential function shifted 4 units to the right and 3 units up.
Therefore, the graph of the new equation y = 2ˣ⁻⁴ + 3 will have the same shape as the original graph, but it will be shifted 4 units to the right and 3 units up.
To learn more on Graph click:
https://brainly.com/question/17267403
#SPJ2
What is the equation for five times a number is 45?
Answer:
5 × Y = 45 y stands for "a number"
Step-by-step explanation:
not sure what your asking so ill solve it too
45/5=9
when the equation is multiplication you use division also vice versa for division
5×9=45
y=9