Mathematics Middle School

can anybody teach me about functions domains and range?

Answers

Answer 1
Functions are graphs that do not have repeating x-values. The domain of a function are the x-values and the range are the y-values in a function
Answer 2
To make something a function the x cannot share multiple Ys(the vertical line test) but the y can share as many Xs
For example:
(1,3) (1,-6) would not be a function but...
(1,3) (2,6) would be

The domain is the x value. In a table it will almost always appear on the left side.

The range is the y value. In a table it will almost always appear on the right side.

Related Questions

what number do you multiply by itself to get 6.25???

Answers

Answer:

2.5

Step-by-step explanation:

The square root of 6.25 is 2.5.

Becuase 2.5 x 2.5 = 6.25

Hope this helps!

Answer:

2.5

Step-by-step explanation:

6.25 = 625/100

625/100 = (5×5×5×5)/(2×2×5×5)

{prime factorisation}

Pairing of common numbers =

{(5×5) × (5×5)}/{(2×2) × (5×5)}

{taking a single no. from the pairs}

= {5 × 5}/{2 × 5}

= 25/10

= 2.5

The top of a ladder rests at a height of 15 feet against the side of a house. If the base of the ladder is 6 feet from the house, what is the length of the ladder? Round to the nearest foot.
A. 9 ft
B. 14 ft
C. 16 ft
D. 21 ft

Answers

The answer for this is 21ft
Your answer would be D.21 Ft

one a penny 2 a penny _____________________



compleat the question to get a brainlest!! xD (pls no report)

Answers

Answer:

3 a penny 4 a penny 5 a penny 6 a penny

Step-by-step explanation:

coinssssss

Any help on this page would help me alot!

Answers

For number 8 : the equation can be y=x+21
#3

0 -> 2(0)+6 -> 6
1 -> 2(1)+6 -> 8
2 -> 2(2)+6 -> 10

——

#4

0 -> 3(0)+1 -> 1
1 -> 3(1)+1 -> 4
2 -> 3(2)+1 -> 7

——

#5

2x

——

ill continue if someone else hasn’t answered yet-

Laura's Auto Wash had revenues of $10 from 2 customers. After serving 4 customers, how much revenue will Laura's Auto Wash have? Solve using unit rates.

Answers

Answer:

Laura will have $20 after serving 4 customers.

Step-by-step explanation:

$10/2 = $5/1

$5*4 = $20

Would this be a good story to tell???

Once apron a time there live a scary phantom and she had a physical problem with her had see win she was a human she got in a car wreck with her mom, her mom was fine but she was not, she suffered from censor or so she thought , she whisper to her mom that she will be alright but a few minutes later she becomes a phantom and she can't give her mom a hug what is the phantom's name you mite ask well her name is galaxy and her mom still loves her nonmatter what and cool phantom she is and galaxy is not a scary phantom anymore she is a good and cool phantom but the reason why she was a scary phantom is because she thought her mom was dead but she is able to be with her mom again but as a phantom and they live happily ever after the end.

Answers

Answer:

yes

Step-by-step explanation:

Carlos recorded the weight of several bags of potatoes. He then counted the number of potatoes in each bag. The scatterplot below represents the relationship between the number of potatoes in a bag and the weight of the bag.

A.10 pounds
B.8 pounds
C.55 pounds
D.50 pounds

Answers

Answer:

A

Step-by-step explanation:

Answer: let me know when you repost the question

Step-by-step explanation:

Help I will give brainliest please hurry

Answers

False I learned this a long time ago

Answer:

False

Step-by-step explanation:

Hope this helps :)

If this answer helped you then please mark it as brainliest so I can get to the next rank

the table shows the relationship y=kx. what is the constant proportion, k?

Answers

Answer:

[tex]k \: = 4 [/tex]

Step-by-step explanation:

Thanks alot

4 is the correct answer

help me please !!!!!!!

Answers

Answer:

h=14

Step-by-step explanation:

h-24=-10

h=-10+24

h=14

I had also gotten h=14

HELP ASAP:
Write the ratio of twice a number and 5 as an expresssion.

Answers

I think the answer is 2n/5 but I could be wrong
i think This means: 2 times p (twice a number p; p being a variable for a currently unknown number) plus 5 (5 more).

PLEASE HELP :D
solve each equation by showing your work OR explaining all your steps

1. -4x + 2 = -18

2. x/3 - 6 = -2

Answers

-4x + 2 = -18
-4x -2 = -2
-4x = -20


-4x over -4 and -20 over -4 you divide and then you get positive 5 so x=5 because 2 negatives makes a positive
All I know is that answer 1 is 5

Bridget knit a total of 15 centimeters of scarf over 3 nights. How many nights will Bridget have to spend knitting in order to knit a total of 40 centimeters of scarf? Solve using unit rates.
Please explain

Answers

It will take Bridget 8 nights to knit 40 centimeters. You can get this answer because if Bridget knits 15 centimeters in 3 nights then she knits 5 centimeters every night. From then on all you have to do is divide 40/5 to get the answer.




Have a lovely day and Brainliest would be nice;)

answer super fast for brainliest an 50 points

Answers

Answer: 60% increase followed by a 40% decrease belongs in less than original. A 50% increase followed by a 33 1/3 decrease also belong in less than original. A $20 decrease followed by a $20 increase belongs in same as original. A 75% decrease followed by a 50% increase belongs in less than original. A 100% increase followed by a 33 1/3 decrease belongs in less than original.

Step-by-step explanation:

Hope this helps :)

help me...................................

Answers

Answer:idek school is very hard

   

Step-by-step explanation:

I believe it’s 1.5 : 3.75, 1 : 2.5, 3.5 : 8.75, 2.5 : 6.25. Could I have brainliest if it’s right?

i need some help pls thx

Answers

Answer:

Graph A represents a function

Step-by-step explanation:

in a function every input will have its own specific output.

Please help answer this question thanks

Answers

Answer:

y = 0.005x + 20.

Step-by-step explanation:

First, we need to make the equation. We can use y = mx + b.

b is the y-intercept, and in this case, it is 20. Plug it in: y = mx + 20. Our first point on the graph is (0,20).

The slope is 0.005 (y = 0.005x + 20), which is too small to graph, if you look at the x-axis labels. But that's okay! Plug in a number for x that you know is on the x-axis, such as 2,000.

y = 0.005(2000) + 20 = 30

Remembering (x,y), we have our second point on the graph (2000, 30).

Let's look for one more.

y = 0.005(14000) + 20 = 90

Our third point on the graph is (14000, 90).

Now, lets look for those points on the graph and make our line.

Some one help me please

Answers

Answer:

24

Step-by-step explanation:

24 if you set it up and divide 90 by 36 you get 2.5. then divide 60 by 2.5 and you will get 24. :)))

The anwser is :24 for you

Please help me with this question

Answers

Answer:

oop this hard

Step-by-step explanation:

Write a sentence to compare the two points shown on the number line.

Answers

-2.7 is less than 4.5

＼(º □ º l|l)/ i dont understand

Answers

Answer:

W' -6,2

X' -12, 2

Y' -10, -3

Z' -4, -3

Step-by-step explanation:

If you look into a mirror, you will see your reflection. It's kind of like that ig. Reflecting it over the y-axis means that you're going to be moving the whole shape over the line that says "y" at the top of it. Sorry if my explanation is bad, but this is the most easy way for me to explain it. After you reflect it over the y-axis, you have to find out where the points are now.

So

Point W started at 6,2

Point X started at 12,2

Point Y started at 10,-3

Point Z started at 4,-3

Btw, I just started learning this, so I may be wrong, but I hope this helped!!

Answer:

w' -6,2

x' -12,2

y' -10, -3

z' -4, -3

Step-by-step explanation:

All the domains become negative while the ranges stay the same

plz help. Write an equivalent expression to show the relationship of multiplication and addition. (Use the x for multiplication, if necessary) d + d + d + d + d

Answers

5d I’m pretty sure is correct
i think 5d would right because 5 of the d’s and put them into one

Ernesto jarred 12 liters of jam after 2 days. How much jam did Ernesto jar if he spent 3 days making jam? Solve using unit rates.

Answers

Answer:

18 liters

Step-by-step explanation:

12 liters/2 days = 6 liters/day

6 liters/day x 3 days = 18 liters

He would have 18 liters after 3 days.

Find the range. please help

Answers

All real numbers. Range is what y variable it could be.
Subtract the highest number to the lowest and that’s your range

Tina purchased 3 4/12 lbs. of apples and Joe purchased 1 1/12 lbs. of apples.

Answers

Together they bought 4 5/12 lbs. of apples.

3+1=4
4/12+1/12=5/12

Answer:

to gethrr they purchased 4 1/4 or 4.25 lbs. of apples

Step-by-step explanation:

addition of the lbs of apples

Find the area of the figure and choose the appropriate result.

Answers

Answer:

A: 6*4=24

B:10.5*3.5=36.75

C:2*3*3.6=21.6

add them all together

24+36.75=60.75

60.75+21.6=82.35

82.35mm

Answer:

its 41.7........... ..

A tortoise and hare decide to race 40 feet! The hare, being so generous and kind, gives the tortoise a head start of 28 feet. The tortoise "runs" at a speed of 0.5 feet/sec, and the hare runs at 4.5 feet/sec. How long will it be until the hare catches the tortoise?

Answers

I’m not sure if this is right but the answer could be 3 minutes or 2 minutes
This answer would be 3 minutes hope this helped :)

Find the area of the circle. Diameter = 12 mi

answer choice:
36π mi
144π mi

Answers

Answer:

36π mi

Step-by-step explanation:

Area of a circle = πr²

Diameter = 12 mi. Therefore, radius=12/2 = 6 mi

πr²

π x (6)²

π x 36

Hence, the answer is 36π mi

the answer to this question is 36pi

Find the volume of the figure. Round answers to the nearest hundredth, if necessary. Use 3.14 for pi.

Answers

Answer:

602.88

Step-by-step explanation:

V=π[tex]r^{2}[/tex]h

Answer: 602.88

Step-by-step explanation: 3.14 x r^2 x h = 3.14 x 16 x 12

plz help I understand

Answers

Answer:Its "B" as far as I know since I cant see A

Step-by-step explanation:

It’s definitely B. The answer is B
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