Mathematics Middle School

Which is function? I got them wrong except for 1. I’ll give brainlist :)

Answers

Answer 1

Answer:

2 is a function and 3 isn't a function

Step-by-step explanation:

Answer 2

Answer:

The second graph is a function; third one is not

Step-by-step explanation:

Well, you can do the vertical line test. Basically draw a vertical line and see if there are 2 lines intersecting that one vertical line. If it is, it is not a function.

Hope this helps :)

-jp524

Related Questions

1/2(2x - 1) = -1/5 -3/5 find x

Answers

Answer:

x = -3/10

Step-by-step explanation:

1/2(2x - 1) = -1/5 -3/5

Combine like terms

1/2(2x - 1) = -4/5

Multiply each side by 2

2* 1/2(2x - 1) = -4/5*2

2x-1 = -8/5

Add 1 to each side

2x-1+1 = -8/5 +1

2x = -8/5+5/5

2x = -3/5

Divide by 2

2x/2 = -3/5 * 1/2

x = -3/10

y-intercept:
(
0
,
−
1
)
(
0
,
-
1
)
x
y
0
−
1
2
0

Need help plz. No links.

Answers

Answer:

C is the total number of money spent. n represents the cost per car, there were 2 cars bought, so, c = 2n

there

Step-by-step explanation:

Jim needs to purchase 120 ice cream cones for his school’s ice cream social. If the ice cream cones come in packs of 20, how many packs does he need to buy?

EXPLAIN WITH STPES (FIRST,THEN,NEXT,LAST)

ThanksQ

Answers

6 packs bro. It’s not even that hard.

So you're trying to identify how many packs of ice cream cones Jim needs to buy if he needs 120 in total. To find this, first you have to find what number times 20 would get you 120. Then, you muitiply 6 by 20 to make sure it's 120. Once you do, you have your final answer.

Therefore, Jim needs to buy 6 packs to have a total of 120 ice cream cones.

I hope this information was of any use to you.

Meg scored 45, 48, and 56 on three tests. How many points should she get on the fourth test to get an average score of 60?

A: 49.67 points
B: 52.25 points
C: 91 points
D: 93 points

Answers

Answer: C 91 Points

Step-by-step explanation:

Please give brainliest and a heart.

The answer is c 91 + 45 + 48 + 56 /4 =60

Pls help if you only know the correct answer! Thanks! :)

Answers

Answer:

A=1.5

B=-1/3

C=-4/3

Hope can help you.

Answer:

C is -1/3

B is -4/3

A is 1.5

Step-by-step explanation:

B is -4/3 because when you turn 4/3 into a decimal it's -0.333.

1.5 is the only positive.

when i got on this question, i was transforming it and then all of a sudden it would be the opposite way its trippyyyyyyy

Answers

Answer:

surface are is 256 in.

The answer is 252in

9 x 7 = 63

63 x 4 = 252

PLEASE HELP ASAP!! The mean temperature amongst several major cities on the east coast on a particular day was 68 degrees with a standard deviation of 7.5. If New York City's z-score was -0.8, what was the temperature that day?

Answers

Answer:

Step-by-step explanation:

69 is the answer.....

BRAINLIEST IF YOUR RIGHT!!!

Answers

Answer:

Step-by-step explanation:

(4-2)^3-3*4

=2^3-12

=8-12

=-4

Answer:

the answer should be -4

Step-by-step explanation:

simplify 4-2 into 2

so 2³-3×4

simplify 2³ to 8

so 8-3×4

simplify 3×4 into 12

so 8-12

which then leads to be -4

A store is giving every customer who enters the store a scratch-off card labeled with numbers from 1 to 10.It is equally likely that any of the numbers from 1 to 10 will be labeled on a given card. If the card is an even number, the customer gets a 15 o/o discount on a purchase. If the card is an odd number greater than 6, the customer gets a 30 o/o discount. i will mark brainlest

Answers

Even number 15% off: 5/10 or 1/2 odds
odd number greater than 6 -30% off odds: 2/10 or 1/5
Otherwise 20% off: 3/10 chance/odds

We have 10 numbers. If a customer gets an even number, they will get a 15 percent discount. We know that there are 5 odd and 5 even numbers, therefore there is a 5/10 (50 percent) probability a customer gets a 15 percent discount. We need to find out how many odd numbers are greater than 6. 7 and 9. There are two odd numbers greater than 6, so there is a 2/10 (20 percent) probability a customer gets a 30 percent discount. We also need to find the probability if a customer doesn’t meet any of that criteria. If we add 5/10 + 2/10, we will get 7/10. 10/10 - 7/10 = 3/10 (30 percent).

PLEASE HELP
simplify each polynomial.
2x2 + 8 – 4x + 3x – 6x2 + 7
A. –8x2 – 7x + 15
B. –4x2 – x + 15
C. 4x2 + x + 15
D. 8x2 + 7x + 15

Answers

Answer :

Choice B because it is the only one that makes sense

B I just did the math and that does seem the best answer

Plz help due today

How can you model
"2 squared"?

What do you know about square roots?

How can you model the square root of 16?

How can you model the square root of 36?

Answers

2 squared is equal to 4

Square roots are the opposite of squaring a number

The square root of 16 is 4

The square root of 36 is 6

i'm not sure if this is what you were looking for, but I hope this helps.

It’s squared 2 roots

Simplify the following radical expression.
(7 + √13)(7 − √13)

Answers

Answer:

Step-by-step explanation:

(7+[tex]\sqrt{13[/tex] )(7-[tex]\sqrt{13[/tex] )

this is in the form of a^2-b^2 formula

a^2-d^2=(a-b)(a+b).so write,

(7)^2-([tex]\sqrt{13[/tex] )^2

=49-13

=36

[tex] \huge \mathrm{ \underline{Answer : }}[/tex]

The given expression can be written as :

[tex]( 7 + \sqrt{13} )(7 - \sqrt{13} )[/tex]

[tex](7) {}^{2} - ( \sqrt{13} ) {}^{2} [/tex]

[ by applying identity, (a+b) × (a-b) = a²-b² ]

[tex]49 - 13[/tex]

[tex]36[/tex]

Therefore, we will get 36 as our simplified answer.

__________________________________

[tex] \mathrm{✌TeeNForeveR✌}[/tex]

Bessy can make 4 batches of Rice Krispy treats in 100 minutes. At the same rate, how many would it take to make 7 batches?

Answers

140 bc 100 divided by 4 is 20 and times that by 7

Answer:

175 minutes

Step-by-step explanation:

Find the MODE for the data set: 47, 45, 42, 40, 42, 39, 40,38, 25, 38, 36, 39, 40, 42,
47, 40

Answers

40 hope that helped !!!!!

Answer:

the mode would be 40.

Step-by-step explanation:

the mode is the most common number. being that 40 is listed 4 times and is shown more than any other number, it would be the mode.

John rides his motorcycle with a constant speed of 76 km/h. How far can he travel in 1 1/2 hours?

Answers

Answer: the answer would be 114 KM in 1 and a half hour

Step-by-step explanation: since there is no answer choice, this is only my assumption, and by assumtion i mean math calculation like 76 + 38 equals 114. 1/2 an hour john travels 38 KM's, so add it with how far john travels in 1 hour (78 KM's) and you get 114 KM's in 1 and a half hours.

114 km in 1 1/2 hours

Describe the mistake that Kwame made in his work.

Answers

Answer:

Step-by-step explanation:

He forgot to subtract thr 2x + 10 from 4, the equation would be 14 - 2x

Answer:

Kwame first needed to distribute the -2 instead of adding 4 and -2

Step-by-step explanation:

It should be like this instead:

4-2x-10

-2x-6

The answer suppose to be:

-2x-6

PLEASE HELP

1. How many people said it takes them an hour or more to commute in to work?

2. How many people did Lincoln Elementary survey?

3. Did more people say it takes them less than a half hour or more than a half hour to get to work? What is the difference between the two?

4. Write a statement that is true about the data shown in the dot plot above.

Answers

Answer:

1. 14

2.42

3.both the same

4.on both sides the numbers are all the same.

Step-by-step explanation:

1. 14
2. 42
3. less than a half hour
4. most people take an hour or half an hour to commute to work

Which shows 2 divided by 3 written as a fraction?

Answer choices:
A. 2/3
B. 3 1/2
C. 3/2
D. 2 1/3

NO LINKS PLEASE!!!

Answers

The answer is A……………..

The answer is A because the line in the middle of a fraction means divide so it 2 divide by 3 which is again A

Please help!
Marie made a model (shown below) of the square pyramid she plans to build when she grows up.

Find the surface area of the model please!

Answers

8 x 5 = 40 but since it is a triangle, you have to divide by two which is 20
20 x 4(because there are 4 triangles)
= 80
the surface area of the square pyramid is 80

Base: 8x8=64
Sides: 8x5=40 40 divide by 2= 20
20x4=80
80+64=144m^2

PLZZ HELP!!!!!!!!!!!!

Answers

5.5
8
30
31
42
24
8
Hope this helps:)

Answer:

7. 5.5

9. 8

11. 30

13. 31

15. 42

17. 24

19. 8

Step-by-step explanation:

To find the median, arrange the data in ascending order. The median will be the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

Please give brainliest if I helped!

Nigel went to a sandwich shop for lunch. The menu to the above shows the types of cheeses and meats available. If Nigel chooses one cheese and one meat, how many different sandwiches are possible?

Answers

Answer:

Step-by-step explanation:

There are 2 cheeses, american and cheddar, and 4 meats, ham, bologna, turkey, and chicken. For every cheese, there are 4 options of meat. So then there are 2*4=8 sandwiches. If you are familliar with this concept, just multiply 2 and 4.

Answer is 8 hope it helps

On Monday, the low temperature in a city was -5.4°F. On Tuesday, the low temperature was 1.2°F colder than on Monday. On Wednesday, the low temperature was 3.7°F warmer than on Tuesday. What was the low temperature in the city on Wednesday?

Answers

Answer:

-2.9°F

Step-by-step explanation:

-5.4°F - 1.2°F = -6.6°F

-6.6°F + 3.7°F = -2.9°F

The low temperature in the city on Wednesday was -2.9°F

Hope this is helpful

Answer:

-2.9°F

Step-by-step explanation:

First subtract the temperature from Tuesday to Monday because it is getting colder, and you get 6.6 (-5.4 - 1.2 = -6.6)

Then add 3.7 because it is getting warmer and you get

-6.6 + 3.7 = -2.9

Jade wants to verify that the expression 5(3x – 6) is equivalent to 15x – 30. She substitutes 2 into each expression and evaluates each one. How will she know if 5(3x – 6) is equivalent to 15x – 30?

1. They are equivalent if the two values are the same.
2. They are equivalent if the value for 5(3x + 6) is greater.
3. They are equivalent if the value for 15x + 30 is greater.
4. They are equivalent if one value is negative and the other value is positive.

Answers

Answer:

the answer is 1. They are equivalent if the two values are the same.

hope this helps

have a good day :)

Step-by-step explanation:

5(3x-6)=15x-30

The answer is number 1

help me with some questions please?!!

Answers

0,6- 0,6 -0,-6 -6,0 6,-0

Which graph shows a line with a slope and y-intercept that are the same value?

Answers

Answer:

Top left

Step-by-step explanation:

Top left:

slope = -2

y-intercept = -2

Top right:

slope = -2

y-intercept = -1/2

Bottom left:

slope = -2/6 = -1/3

y-intercept = 3

Bottom right:

slope = -6/2 = -3

y-intercept = 3

Answer:

Top left

Step-by-step explanation:

5) Given: f(x) = 3x-9, find f(0), f(2), f(4), f(10)

Answers

f(0)=-9
f(2)=-3
f(10)=21

f(0)=-9
f(2)=-3
f(4)=3
f(10)=21

Evaluate: 2(x2+6)−3 y√ 2 ( x 2 + 6 ) - 3 y when x = 3 and y = 64.

Answers

Answer:

−4234.93506

Step-by-step explanation:

2(3^2+6)−(3)(64)√2(3^2+6)−(3)(64)

=−4234.93506

Not sure if this is right, but hope this helps.

Answer:

it's 6

Step-by-step explanation:

Which clipboard (A, B, or C) represents a 270 degree counter- clockwise rotation?

Answers

Answer: C

Step-by-step explanation:

Because if you look at the star then it will show you how it rotated.

Answer: C

Step-by-step explanation: im not 100% sure but i think thats it

a bicyclist traveling at an average speed of 18 km/h takes 3 hours and 30 minutes to complete his journey. How many hours less will he take if he bicycles at a speed which is 3 km/h faster

Answers

Answer:

It will take him 0.5 (30 minutes) less hours if he bicycles at a speed that is 3km/h faster.

Step-by-step explanation:

18 km/h x 210 minutes = 3,780

3,780/21km = 180 minutes = 3 hours

If we multiply the speed by the time we can find the distance, using that we can find the time it takes to travel the same distance with more speed (21km/s this time).

Therefore, it will take 30 minutes less if he travels 2 km/s faster or 0.5 less hours

I hope this helps!

It will take him 1/2 an hour or 30mins

Please give me the correct answer.

Answers

Answer: Here is the order: 1= 22 2=8 3=56 4=32

Step-by-step explanation:

22,8,56,32 here is the answer

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