Answers
Answer:
Please see below.
Step-by-step explanation:
f^-1 (x) essentially means the reverse.
We can substitute y for x in the equation and solve for y:
x = 4y -1
x+1 = 4y
y = (x+1)/4
so that is our answer for the first one:
f^-1(x) = (x+1)/4
We do the same trick for the second question:
x = 2y +1
x-1 = 2y
y = (x-1)/2
so the answer is f^-1(x) = (x+1)/2
The last question is slightly more complex, we can write is as:
x = 2y/(y-1)
x(y-1) = 2y
yx -x = 2y
yx = 2y + x
yx - 2y = x
y(x-2) = x
y = x/(x-2)
so the answer is x/(x-2)
You can check out my fiverr account for more help; providing detailed explanations to math questions for only $1per question :)
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Related Questions
Number 19 please and thank you.
Answers
Answer: Sir/Ma´am/Person, it doesnt show.
Step-by-step explanation: Im on an computer and it wont show, ive tried putting it in different tabs..nothing seems to be functional. Maybe its my computer? If it isnt, heres a heads up: it could be a unrecognized file if thats what it told you somehow before you did that? But thats all i wanted to type. Enjoy your day.
will brainly come in clutch???
Answers
Answer:
32
Step-by-step explanation:
to form a linear pair means when the two angles are added, they equal 180 degrees
3x + 20 + x + 32 = 180
4x + 52 = 180
4x = 128
x = 32
Help!! Please!!!! Please show your work!
Answers
Answer:
N/A
Step-by-step explanation:
We should first simplify the right side, and doing so will get x/3+6=x/3+10. WE then subtract x/3 on both sides to get 6=10. Since this cannot be true, there are no solutions.
Answer:
no solution
Step-by-step explanation:
[tex]\frac{x}{3}[/tex] + 6 = 2([tex]\frac{x}{6}[/tex] + 5) ← distribute parenthesis by 2
[tex]\frac{x}{3}[/tex] + 6 = [tex]\frac{x}{3}[/tex] + 10 ( subtract 6 from both sides )
[tex]\frac{x}{3}[/tex] = [tex]\frac{x}{3}[/tex] + 4 ( subtract [tex]\frac{x}{3}[/tex] from both sides )
0 = 4 ← False statement
This indicates the equation has no solution
Last
year at a certain high school, there were 60 boys on the honor roll and 130 girls
on the honor roll. This year, the number of boys on the honor roll increased by 5%
and the number of girls on the honor roll increased by 20%. By what percentage did
the total number of students on the honor roll increase? Round your answer to the
nearest tenth (if necessary).
Answers
Answer:
15.3%
Step-by-step explanation:
60x.05 = 3 boys
130x.20 = 26 girls
3+26 = 29 students
60+130 = 190 total students
(29/190)*100 = 15.3%
help with this question
Answers
Answer:
B Possibly?
Step-by-step explanation:
If a dozen eggs cost $1.35, what does the unit cost?
Answers
Solve for x: -3x + 3 < 6 (1 point)
O x <-3
0x<-1
х
O x>-1
Ox>-3
X >
Answers
Answer:
x > -1
Step-by-step explanation:
-3x + 3 < 6
-3(-1) + 3 < 6
Please let me know if im incorrect
Point V is on the line segment UW. Given VW=5x-4, UV=2x, and UW=5x, determine the numerical length of VW
Answers
Or 2x+5x-4=5x
So 7x-4=5x
This means that x is generally a low amount as x has to be less than 3 (as 3x7, 21-4=17 and 3x5=15.)
I then tried to input 2 and got 14-4=10 which is correct.
So x=2
We then input x=2 into 5x-4 for the answer.
5(2)-4
10-4
6
The final answer is 6
Express the ratio as a fraction in simplest form. 10 yards to 10 feet
Answers
Answer:
30
Step-by-step explanation:
3 feet per yard, therefore 10 yards= 30 feet
when 7 is added to 3 times a number, the sum is multiplied by 2 and 15 is subtracted what is the final answer
Answers
Answer:
2(3x+7) -15
Step-by-step explanation:
Let x = unknown number
7 is added to 3 times a number
3x+7
Multiply the sum by 2
2(3x+7)
Subtract 15
2(3x+7) -15
Answer:
Let the required number be " x "
Now, 7 is added to 3 times a number : (3x + 7)
Next, the sum is multiplied by 2 : 2(3x + 7)
And then, 15 is substracted from it : 2(3x + 7) - 15
2(3x + 7) - 15 is the final answer.help pls!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
7
Step-by-step explanation:
you do it and the answer should be 7
7.
Which expression is equivalent to 2r(2.5s + 10) - 3(r + 4) + s(r - 1)?
A. 6rs + 23r - 13
B
6rs + 17r - 13
С
6rs + 23r + S + 12
D
6rs + 17r - S - 12
Answers
HELP PLSSS THIS IS HARD ANYONE
Answers
i think it is c)
but if it's wrong pls don't report me
and tell me waht is correct answer....
A weather balloon ascends 6 meters every second.
How far will it ascend in 120 seconds?
Enter the your answer in the box.
m
Answers
Answer:
720
Step-by-step explanation:
6x120
The answer is 720 because if the balloon goes up 6 meter per second and it keeps on going for 120 seconds then after 120 seconds it will be 720 meters up in the air.
Answer= 720 meters
Denilys has $186.44 saved in her piggy bank. She
saw a pair of jeans for $49.89 and a pair of
earrings for $24.58 that she couldn't live without.
How much money will she still have in her piggy
bank after she buys her jeans and earrings?
Answers
Answer:
$111.97
Step-by-step explanation:
Hshshjsjsjsjsjsjjsjs
Answers
Answer:
3 ÷ 8
Step-by-step explanation:
1. A fraction has two parts: a numerator and a denominator. The numerator is the dividend (the number that is to be divided by the divisor), and the denominator is the divisor (the number that is divided into the dividend).
2. Given the information above, we know that 3 is the numerator, and 8 is the denominator. This means 3 ÷ 8 = 3/8.
Need help ASAP!!!! 50 points
Answers
I rlly need help im failing in math out report cards are Wednesday on top of that my birthday is October 25 help me please
Answers
Answer:
Number 4 is -5 I believe
What is the perimeter of WXYZ?
Answers
I NEED HELP!!! PLS DUE TODAY!!!
I need to make this word problem a division word problem.
Emma had 2 1/4 of jelly beans. She ate 1/4 of them.
Answers
Answer:
2 1/4 divided by 1/4
or
9/4 divided by 1/4
Step-by-step explanation:
Answer:
2 1/4 / 1/4 = ?
Step-by-step explanation:
ok so
2 1/4 / 1/4
(jelly beans / how much she ate)
Help me someone please i will give brainliest and 5 stars and a thanks :)
Answers
Answer:
a
Step-by-step explanation:
Answer:
b. 81
d. 144
Step-by-step explanation:
A perfect square is an integer whose square root is also an integer.
Round 7412 to the nearest thousand.
Answers
Answer:
7000
Step-by-step explanation:
below 7500 means 7000
Hiiii!!!! Can you solve this please?
Answers
I think the answer is 32 maybe
The area of the shape
= (3×2)+(3×2)+(10×1)
= 6 + 6 +10
= 22
The answer is 22.pls helppp it's due after 30 min
* Find the cast price of the following: a) selling price 55 profit 10% c) selling price $680, loss 15% b) selling price $558, profit 24% d) selling price $11.78, loss 5%
Answers
Step-by-step explanation:
• C. P = Cost Price.. , S. P (Sell Price) , → C.P = 100×S.P/100+Profit (when profit) (a) C.P = 100 × 55/100 + 10 = 5500/110 C.P » $ 50(b) C.P = 100 × 558/100+24 = 55800/124 C.P » $ 450→ C. P = 100 × S.P/100 - loss (when loss) (c) C. P = 100 × 680 / 100 - 15 = 68000/85 C. P » $ 800(d) C. P = 100 × 11.78 / 100 - 5 = 1178/95C. P » $ 12.4
Find values of a, b, and c that make each statement true.
If no values exist, write not possible.
a. a< b and a +<< b + c
b. a< b and a +c>b+c
c. a< b and ac < bc
d. a bc
e. a< b and ac=bc
Answers
Answer:
•Find values of a, b, and c that make each statement true.
Find values of a, b, and c that make each statement true. If no values exist, write not possible.
ANSWER: A
Step-by-step explanation:
hope it's helpful
Find the missing side of each triangle. Leave your answer in simplest radical form.
(Please show ur work)
Answers
___________
[tex] \: [/tex]
[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]
Step by step :x² = 12² + 10²
x² = 144 + 100
x² = 244
x = 15,6m✔
x² = 12² + 10²
x² = (12 × 12) + (10 × 10)
x² = 144 + 100
x² = 244
x = √244
x = 15,6 m
Which of the following are techniques you have learned so far for solving a
quadratic equation?
Check all that apply.
O A. Solve by taking the square root of both sides
B. Solve by factoring
C. Solve by substitution
I D. Solve by forming sums of squares
Answers
The techniques you have learned so far for solving a quadratic equation are solve by factoring and solve by substitution
What are quadratic equations?Quadratic equations are expressions that have a leading degree of 2.
In order to solve factorization, the following streps are crucial
Solve by factoring: This is a way of factoring the GCF in the grouped functions.It can also be solved by substitution: Using the general formula, the coefficients are substituted to determine the zerosLearn more on quadratic function here: https://brainly.com/question/25841119
#SPJ2
Answer:it is solve by factoring and solve by taking the square root of both sides!
Step-by-step explanation:
-0.1b = 3.8, what is b?
Answers
-0.1b = 3.8 ; Get b alone
3.8 / -0.1 = -38 ; Turns negative, and 3.8 / 0.1 = 38
b = -38
PLEASE HELP :)
The value of a polynomial is 0 when x = -8
What expression must be a factor of the polynomial?
Answers
Answer:
Wait, could you explain
Step-by-step explanation:
[tex]\huge\bold\red{{HELP}}[/tex]
Please answer it correctly With solution.
Answers
Step-by-step explanation:
[tex] \frac{ {a} + 4 }{ {a}^{2} + 7a + 10} \times \frac{ {a}^{2} + 6a + 5}{ {a}^{2} + 5a + 4 } \\ = \frac{ {a} + 4 }{ (a + 2)(a + 5)} \times \frac{(a + 5)(a + 1)}{(a + 4)(a + 1)} \\ = \frac{1}{a + 2}\\\\ \frac{9m-4}{8}+\frac{3m+8}{8} \\=\frac{12m+4}{8}\\=\frac{3m-1}{2}\\\\\frac{4{x}^{2}}{2x-7}-\frac{49}{2x-7}\\=\frac{4{x}^{2}-49}{2x-7}\\=\frac{(2x-7)(2x+7)}{2x-7}\\=(2x+7)[/tex]
Please find attached photograph for your answer.
Hope it helps and sorry for delay.