Use f(x) = 1/2 and f^-1(x) = 2x to solve the problems.
f(2)=
f^-1(1) =
f^-1(X2)) =
Answer:
Solution:
When X=2
f(2)=1/2
= 1/2
When X= 1
f^-1(1)= 2*1
=2
When X=2
f^-1(2)=2*2
= 4
Step-by-step explanation:
I don't know if these are correct and if that last question is f^-1(2) or not.
Molly wants to buy a dress that costs $20. She has a coupon for 40% off, and there is a 10% sales tax. How much will she pay altogether? Answer the questions to find out. 1. What is 40% of $20?
Answer:
Molly will pay $13.20 for the dress
40% of $20 is the discount, $8.00
Step-by-step explanation:
multiply dress cost by % you will pay, then add 10%
$20 x .60 then add 10%
$12 is dress with coupon, and 10% of that is $1.20
$12 + $1.20 is $13.20
Multiply 1 over 2 multiplied by negative 1 over 4 . Which of the following is correct?
a
negative 1 over 8
b
negative 1 over 9
c
negative 1 over 10
d
negative 1 over 16
Answer:
im pretty sure its A
Step-by-step explanation
Which is an algebraic expression for 5 more than z?
5z
z + 5
5z + 5
5 - z
Answer:
it's B
Step-by-step explanation:
your taking z but it's saying it's five more
Sixth grade > H.5 Divide decimals by whole numbers: word problems TWZ
You
A chocolate factory made 708.89 pounds of milk chocolate in 5 days. How much milk
chocolate, on average, did the factory make per day?
Answer:
Step-by-step explanation:
708.89 / 5
= 141.788 pounds.
Which expressions are equivalent to 4(-5z+2)+(-6)
please help
Answer:
None of the above please
State the domain and range and state if it is a function or not
Step-by-step explanation:
the domain and range as stated in the pic.
it's a function
[tex]y = {x}^{2} - 1[/tex]
What is 4 ten thousands 3 tens divided by 10
Answer:
The answer is : 4003.
because 40 030 : 10 = 4003
Thank You!
help asap please 7 grade math
Answer:
The friend is incorrect
Explanation:
|x| is the absolute value, and absolute values cannot be negative therefore |-10| = 10.
need help solving this equation: -4x + 33 = 2x + 81
[tex]\\ \sf\longmapsto -4x+33=2x+81[/tex]
[tex]\\ \sf\longmapsto -4x-2x=81-33[/tex]
[tex]\\ \sf\longmapsto -6x=48[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{48}{-6}[/tex]
[tex]\\ \sf\longmapsto x=-8[/tex]
Answer:
x = -8
Step-by-step explanation:
Collect the like terms
-4x - 2x = 81 - 33
-6x = 48
x = 48 / - 6
x = - 8
A contractor needs to buy nails to build a house. The nails come in small boxes and large boxes. Each small box has 50 nails and each large box has 350 nails. The contractor bought 5 more large boxes than small boxes, which altogether had 2550 nails. Determine the number of small boxes purchased and the number of large boxes purchased.
Answer:
7 large boxes an 2 small boxes
Step-by-step explaination
its obligatory to be 5 large boxes so i first did 350 * 5 =1750
then i just added a small box with a large until it gave the result
x to the power 2 + 7x +10
Resolve into factors
Answer:
The answer is (x+2)(x+5) . Determine two numbers that when added equal 7 , and when multiplied equal 10 . The numbers 2 and 5 fit these criteria.
PLEASE MARK ME BRAINLIEST.a number w multiplied by 42
Answer:
42 = 1 x 42, 2 x 21, 3 x 14, or 6 x 7.
Jason cooks 2 ⅛ cups of rice. Which statement correctly describes the number of cups of rice Jason cooks?
Answer:
2.13
Step-by-step explanation:
The number of cups of rice is a rational number because it can be written as 2.13
What is the slope of the line in the graph below?
(look at picture)
hey can you guys give me a list of what times 3 equal 25
Answer:
Nothing
Step-by-step explanation:
Nothing times 3 will equal 25
If x is 6, then 7x = ?
Answer:
42
Step-by-step explanation:
x=6
7x=?
7x= x*7
7x=6*7
7x=42
So the answer is 42,
Hope this helps!
 One of these 80 students is chosen at random. what is the probability that the student went to the signs museum? (Is this correct?)
Answer:
PROBABILITY=42/80
=7/20
evaluate the expression when a= 6 and c= -6. -a+9c
Answer:
=-a +9c
=-6+9×-6
=-6+(-54)
=-6-54
=-60
hope it helps you!!!
stay safe healthy and happy!!!!
In HER COLLEGE ENGLISH CLASS MARTA WROTE A TOTAL OF. 15,000 WORDS IN ESSAYS THREE OF MARTA’S ESSAYS WERE 1,000 WORDS LONG AND THE REST ARE 2,000 WORDS LONG HOW MANY 2,000 WORD ESSAYS DID SHE WRITE
Answer: 6 essays
Step-by-step explanation:
With the given question, we can write out an equation.
Equation: 3(1000)+2000x=15000
We have 3(1000) because 3 of Marta's essays have 1000 words. We have 2000x because there are 2000 words, but we don't know how many essays. Lastly, we have 15000 because that is the total number of words. All we have to do is solve for x.
3(1000)+2000x=15000 [multiply]
3000+2000x=15000 [subtract both sides by 3000]
2000x=12000 [divide both sides by 2000]
x=6
Now, we know there are 6 essays.
Pls help! URGENT ONLY DO QUESTION 21 PLS
Answer:
y = x - 8
Step-by-step explanation:
There's no magic method to doing these, and problem 21 makes it harder to see a pattern by using inputs that are not consecutive integers (like problem 20 does)!
Looking at inputs 20 and 21, the outputs are 8 less than the inputs. Check the other inputs and notice that the same pattern holds up.
What is the domain and range of the function y = xn if n is an odd whole number? if n is an even whole number?
A. If n is odd, domain is (−∞,∞) and range is [0, ∞); if n is even, domain and range are both (−∞,∞).
B. If n is odd, domain and range are both (−∞, ∞); if n is even, domain is (−∞, ∞) and range is [0, ∞).
C. In both cases, domain is (−∞, ∞) and range is [0, ∞).
D. Domain and range in both cases is (−∞ , ∞ ).
Domain and range are the possible x and y values, a function can take.
For the given functions:
If n is odd, domain and range are both (−∞, ∞)If n is even, domain is (−∞, ∞) and range is [0, ∞)Given that:
[tex]y = x^n[/tex]
When n is even.
Assume that [tex]n=2[/tex]
The equation becomes:
[tex]y =x^2[/tex]
See attachment for the graph of [tex]y =x^2[/tex].
From the graph, we can see that values of x extend to both sides of the x-axis.
So, the domain is: [tex](-\infty, \infty)[/tex]
However, the value of y starts from 0 and the curve opens upward. This means that y only take positive values.
So, the range is: [tex][0, \infty)[/tex]
When n is odd.
Assume that [tex]n =3[/tex]
The equation becomes: [tex]y = x^3[/tex]
See attachment for the graph of [tex]y = x^3[/tex].
From the graph, we can see that values of x and y extend to both sides of the x-axis and y-axis, respectively.
So, the domain is: [tex](-\infty, \infty)[/tex]
The range is: [tex](-\infty, \infty)[/tex]
Hence, option (B) is correct.
Read more about domain and range at:
https://brainly.com/question/1632425
Is 5.083 (the 3 is repeating) a rational number?
Answer:
yes it should be. any repeting decimal not equal to zero is rational
Help! I don’t get this ine
[tex]3|2x+4|-1=11 \ \ /+1\\\\3|2x+4|=12 \ \ /:3\\\\|2x+4|=4\\\\2x+4=4 \ \ \text{or} \ \ 2x+4=-4\\\\2x=0 \ \ \text{or} \ \ 2x=-8\\\\\boxed{x=0} \ \ \text{or} \ \ \boxed{x=-4}[/tex]
There is a slide in a park. One of its side walls has been painted in some colour with a message "KEEP THE PARK GREEN AND CLEAN” (see Fig. 12.10 ). If the sides of the wall are 15 m, 11 m and 6 m, find the area painted in colour.
Answer:
I don't know yujvhkjghjghhhgg
solve by using cramers rule : 3x +2y = 1 , x-y = 2
Answer:
its 3hdnndndjsjshnanajzh z
Do I divide or multiply not sure
Answer:
x=40
Step-by-step explanation:
x= 360-(273+47)
the difference of two numbers is 18. The larger number is five times the smaller number plus six. what are the numbers?
Answer:
3
Step-by-step explanation:
5x+6-x=18
5x-x=18-6
4x=12
4x/4=12/4
x=3
Can someone help me please
A clown earned $654 making balloon animals at a carnival. If the clown charged $6 for each balloon animal, how many balloon animals did the clown make
Answer:
The clown made 109 animal balloons.
Step-by-step explanation:
You'll divide 6 from 654.
654 ÷ 6 = 109
Do long division.
6 goes into 6, 1 time.
6 cannot go into 5 so you'll put 0.
6 can go into 54, 9 times.
109 is your answer.
