How do functions work? Could someone explain how to know which questions are functions or not

Answers

Answer 1

Answer:

A function is an equation that has only one answer for y for every x. A function assigns exactly one output to each input of a speceified type. It is common to name a function either f(x) or g(x) instead of y. f(2) means that we should find the value of our function when x  equals 2.

Step-by-step explanation:

here is a step by step equation:

f(x) = x + 7

if:

x=2

then:

f(2) = 2 + 7 = 9

A function is linear if it can be defined by

f(x) = mx + b

Makes sense? Hope I helped

plus I'm in middle school learning this also.


Related Questions

help me plz with algebra!!!

Answers

Answer:

Y= -12

Step-by-step explanation:

Find the exact length of the third side.
10
6
PLEASE HELP GUH

Answers

Answer:

8

Step-by-step explanation:

I'm using this equation: a^2+b^2=c^2

x^2+6^2=10^2

x^2+36+100

x^2= 64

x=sqrt64

x=8

el número de llegadas al servicio de urgencias de un hospital es de 2 cada 15 min. Si se supone que
el numero de llegadas se distribuye en un modelo de Poisson, se pretende calcular la probabilidad
de que en los próximos 15 min se produzcan 4 llegadas.
Ayuda por favor, es urgente. ​

Answers

Answer:

Uh I don’t speak u language

Step-by-step explanation: Sorry :/

Need help will mark brainliest

Answers

Answer:

64

Step-by-step explanation:

180-52/2=128/2=64

The angle would be 64 degrees because it’s an isosceles triangle

Can u help my 9-12 real quick

Answers

Answer:

9. B

10. C

11. A (probably)

12. D

Answer:

9) a

10) c

11) a

12) d

( I don't know if 11 and 12 are correct)

Tiffany buys a basket of watermelons on sale for \$9$9dollar sign, 9 before tax. The sales tax is 9\%9%9, percent.
What is the total price Tiffany pays for the basket of watermelons?
\$\$ dollar sign, space

Answers

Answer:

Tiffany pays a total price of $9.81 for the basket of watermelons

Step-by-step explanation:

Percentages

To increase a certain amount by a given percentage, we can first calculate the increasing amount and then add it to the original amount.

If the price of the basket of watermelons was $9 before tax, and the sales tax is 9%, we first calculate the tax amount to pay:

$9 * 9 / 100 = $0.81

Now we add it to $9 to get the total price paid by Tiffany:

Total price = $9 + $0.81 = $9.81

Tiffany pays a total price of $9.81 for the basket of watermelons

Answer:

9.81 it was confirmed :)

The width of a rectangle is 2 cm less than its length. The perimeter of the rectangle is 16 cm. What are the dimensions of the rectangle?

Answers

Answer:

Width=3 cm

Length=5 cm

Width is 3cm
Length is 5cm

Based on the work shown to the left, which of
these values are possible solutions of the
equation? Check all of the boxes that apply.

Answers

Answer:

sorry i cant answer without the picture it wont make sense.

Answer:

A, D

Step-by-step explanation:

edge 2021

Anita is surveying students in her classroom about their favourite foods. Her survey results so far are shown below. Use fractions to answer the question.

What fraction of the students prefers either ice cream or pizza?

Type of Food: Fraction of Students Who Prefer the Food:

Fruit 1/12
Ice cream 1/3
Pizza 1/4
Other ?

Answers

Answer:7/12

Step-by-step explanation:fruit = 1/12 ice cream= 4/12 pizza=3/12 other must equal the remaining 4/12 btw and pizza plus ice cream is 4/12+3/12 = 7/12

A baseball player got 61 hits one season. He got h of the hits in one game. What expression represents the number of hits he got in the rest of the​ games? The player had nothing hits in the rest of the games.

Answers

Answer:

[tex](61-h)[/tex]

Step-by-step explanation:

Total number of hits by baseball player in one season = 61

Number of hits in one game = [tex]h[/tex]

To find:

The expression to represent the number of hits that the player got in the rest of the games = ?

Solution:

Number of hits that the player got in one game = [tex]h[/tex]

Let the number of hits that the player got in rest of the games = [tex]x[/tex]

As per the given question statement,

The sum of [tex]h[/tex] and [tex]x[/tex] will be equal to 61.

[tex]h+x=61\\\Rightarrow \bold{x =61-h}[/tex]

Therefore, the player had [tex](61-h)[/tex] hits in the rest of the games.

Arjun sells handmade ceramic mugs he Mark's them up by 60% to make a profit they cost $8 in materials how much do this mugs cost after the markup

Answers

Answer:

$12.80

Step-by-step explanation:

Before markup: $8

After markup: $8 x 160% = $12.80

This is a topic on percentage. If you wish to explore more into this topic you can give me a follow on Instagram (learntionary). I've uploaded this topic's notes and will continue to upload more with tips as well!

n/56 divided by 3/24

Answers

Answer:

n/56 divided by 3/24 would be 1/7n

Step-by-step explanation:

what he/she said :’)

Carlos biked StartFraction 139 over 8 EndFraction miles on Saturday and StartFraction 135 over 7 EndFraction miles on Sunday. On which day did he ride further and by how much? Carlos rode further on Saturday by 1 and StartFraction 51 over 56 EndFraction miles. Carlos rode further on Saturday by 3 and StartFraction 5 over 56 EndFraction miles. Carlos rode further on Sunday by 3 and StartFraction 51 over 56 EndFraction miles. Carlos rode further on Sunday by 1 and StartFraction 51 over 56 EndFraction miles. Mark this and return

Answers

Answer:

Carlos rode further than on Saturday by 107/56 miles.

Step-by-step explanation:

i did the quiz lol

Answer:

Its D

Step-by-step explanation:

I took the test and got it right.

A jewelry store is having a 50% off salefor all necklaces. During the sales, what is the sale priceof a necklace,that regularlycost$49?

answer asap i will make brainliset !

Answers

The answer is $24.50

3/4 (4x+8)=-12. Distributive property

Answers

Answer:

x = -6

Step-by-step explanation:

I'm assuming you're solving for x

3/4 (4x + 8) = -12

you distribute the 3/4 to 4x and 8 so

3/4 times 4x = 3x

3/4 times 8 = 6

now looks like

3x + 6 = -12

3x = -12 - 6

3x = -18

x = -6

Proportional relationships; Yes or no

Answers

Answer:

Yes I believe

Step-by-step explanation:

The leg of an isosceles triangle has a length 2x+4 and the base has length 3x. The
perimeter is 141, What is the length of the base?

Answers

Answer:

[tex]Base = 57[/tex]

Step-by-step explanation:

Given

[tex]Length = 2x + 4[/tex]

[tex]Base = 3x[/tex]

[tex]Perimeter = 141[/tex]

Required

Determine the length of the base

The perimeter of an isosceles triangle is:

[tex]Perimeter = 2*Length + Base[/tex]

[tex]141 = 2 (2x + 4) + 3x[/tex]

[tex]141 = 4x + 8 + 3x[/tex]

Collect Like Terms

[tex]4x + 3x = 141 - 8[/tex]

[tex]7x = 133[/tex]

Divide both sides by 7

[tex]x = 19[/tex]

To get the base, we substitute 19 for x in [tex]Base = 3x[/tex]

[tex]Base = 3 * 19[/tex]

[tex]Base = 57[/tex]

Due to unexpected circumstances, you take out a loan for $5,000 to pay for a lawyer. You agree to pay it back over the next 5 years at a rate of 22.5% (because your credit score is really really low). At the end of the 5 years, how much did this "unexpected circumstance" end up costing you in all?

Answers

P=$5000
R=22.5
T=5yrs
I=PxRxT= 5000x22.5x5=50x22.5=1125x5=5625
———= ———————
100 =. 100
The answer is $5625

if you want brainiest than come here

go to remind.com then log in as student then put the class code: c26kda4

Answers

What will happen once we enter that class code?

Describe the process for
graphing the equation
y =-1/2x- 1

Answers

the formula is y=mx+b

m is the slope

b is the y-intercept form

so the -1 is the y-intercept form. so you need to start at that point on the y axis. then the slope which is -1/2 comes into play. in my school we use rise/run. so from the point you marked at -1 you will go down 1 and to the right 2 points then where you stop is your next point (mark it) keep doing that. also go up the other way from the -1 point. go up 1 and to the left 2. then connect all of your points with a line. I hope this helped.

please chose this answer as brainliest

you can walk 1 1/2 miles in 1/2 hour. what is your average speed?

Answers

Answer:

3mph

Step-by-step explanation:

Depending how far you're traveling and how fast you traveled. When doing speed you typically do it by hours and the unit will be miles per hour (mph).

1. 1.5 mi=0.5 hr

2. Multiple 0.5 by 2 to get one hour, and do the same to the other side

2(1.5)=2(0.5)

3. 3mi=1hr

4. The answer is 3mph

At a birthday party pizzas and sodas were purchased for the kids. The number of sodas bought was two more than three times the number of pizzas. Pizzas cost $9.50 each and sodas cost $1.25 each. (c) A total of $68.75 was spent on pizza and sodas at the party. Let n be the number of pizzas purchased. Set up an equation involving n that models the scenario. Solve it and state both the number of pizzas and the number of sodas that were bought.

Answers

Answer:

5 pizzas and 17 sodas were bought

Step-by-step explanation:

Here, we want to get the number of pizza and sodas bought

Let n be the number of pizzas bought

we are told that the number of sodas bought was 2 more than 3 times the number of pizzas

So the number of sodas will be;

3n + 2

So let’s have the equations based on the prices;

pizzas cost $9.50, soda cost $1.25

Thus;

9.5n + 1.25(3n + 2) = 68.75

9.5n + 3.75n + 2.5 = 68.75

13.25n = 68.75 - 2.5

13.25n = 66.25

n = 66.25/13.25

n = 5

Number of pizzas bought is 5

number of soda is 3n + 2 = 3(5) + 2 = 15 + 2 = 17

Which expression does the number line represent?

NA

0

1

4

2

4

3

4

9

5

4

6

4

7

4

4

8

4

ده

9

Save and Exit

Next

Sun

Answers

Answer: D) 9 Over 4 divided by three-fourths

Step-by-step explanation:

The number line shown below is divided into 3 equal parts. To do so the highest number would have to be divided by a number that would give 3 as an answer.

Say that number is x;

x = (9/4) / 3

= 0.75

= 3/4

Number line shows 9 Over 4 divided by three-fourths .

what are the steps to solve -8(p+2)+p=4(p+3)+5

Answers

Answer:

p = -3

Step-by-step explanation:

What is the slope-intercept equation of the line below?

Answers

My answer would be A. Because if your line is going down, it is a negative slope. And the y-intercept is at negative 1.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

the y intercept is -1 becuase thats where the point is located on the y axis and the slope is -2x because rise over run go up 2 over one

ill give you'll brain list

Answers

Answer:

I can’t see. Pic is not readable

Step-by-step explanation:

I can’t answer number 2 but number 1 is

H:2,5
i:4,8
J:8,7
K:8,3
L:4,2

I need help on this problem ​

Answers

Answer:

y² - 2y - 4x + 9 = 0 (*)

a = 1    b = -2    c = -4x + 9

Δ = b² - 4ac = 4 - 4(9 - 4x) = 4 - 36 + 16x = 16x - 32

if (*) have the solutions => Δ ≥ 0

⇔ 16x - 32 ≥ 0 ⇔ x ≥ 2

with x ≥ 2 => y = [tex]\frac{2+\sqrt{16x-32} }{2}=\frac{2+4\sqrt{x-2} }{2}=1+2\sqrt{x-2}[/tex]

or y = [tex]1-2\sqrt{x-2}[/tex]

Step-by-step explanation:

If IN=2x+10 and AT=26, find x.

A.) 12
B.) 10
C.) 6
D.) 8

Answers

The answer would be D.) 8 because...
2(8)+10
16+10=26
Hope this helps!! :)

Asha borrowed Rs.24000 from a moneylender at a rate of 4% per annum compounded semi annually ,what payment will she have to make after 1year and 6 months to the moneylender to clear her debt ?

Answers

Answer:

Rs. 25,468.8

Step-by-step explanation:

A = p(1 + r/n)^nt

Where,

P = principal = RS. 24,000

r = interest rate = 4%= 0.04

n = number of periods = 2

t = years = 1 year and 6 months = 1.5 years

A = p(1 + r/n)^nt

= 24,000(1 + 0.04/2)^2*1.5

= 24,000(1 + 0.02)^3

= 24,000(1.02)^3

= 24,000( 1.0612)

= 25,468.8

A = Rs. 25,468.8

find the root of 5x-2=0
x=?​

Answers

Answer: 4

Step-by-step explanation:

If you multiply 5x-2 you will get -10

Do all the steps and you get 4

Therefore your answer is 4.

The answer is X=4

Add 20 to both sides cancelling out the left side then you divide 5 leaving the X on one side and 20 over 5 which is 4
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