12 + 3y = 21
Expression or Equation:

Answers

Answer 1
It is an equation because it has an equal sign. Whereas an expression does not have an equal sign.
Answer 2

Answer:

equation

Step-by-step explanation:

12 + 3y = 21

-12. -12

__________

3y = 9

y = 3


Related Questions

CAN YALL HELP ME WITH THIS ITS HARD PLZ HELP I GIVE BRAINLEST

Answers

Answer:

sure whats the problem

Step-by-step explanation:

Maggie’s bank has assigned her a temporary 3-digit PIN to use with her ATM card. Each digit is a number from 1 to 5, inclusive, and no digit can be used more than once in the PIN. Which multiplication problem can be used to determine the probability that the PIN she was assigned was 123? (One-fifth) (one-fifth) (one-fifth) (One-fifth) (one-fourth) (one-third) (Four-fifths) (three-fourths) (two-thirds) (Four-fifths) (four-fifths) (four-fifths)

Answers

Answer:

Step-by-step explanation:

1/5* 1/4 * 1/3

I think it is the second one

one fifth

one fourth

one third

Answer:

b

Step-by-step explanation:

1/5 1/4 1/3 mark me me brainliest

Please help if you know the answer

Answers

Answer:

5/12, 6/12 OR 1/2, 4/12 OR 1/3, 9/12 OR 3/4

Step-by-step explanation:

Find the value of x.

Answers

Answer:

18 or 16

Step-by-step explanation:

It's of a reflective of the other side I think.

David has 5 yellow, 3 green, and 2 red gumballs in a bag. He takes out two at random and does replace them. A) What is the probability, , that the first gumball is green and the second is red? .

Answers

The probability will be






1/5

A bookshop has 5/8 books on literature and 3/8 on fiction.If there are 12,480 books in all, Find the number of books of each kind.​

Answers

the number of literature books is 7,800. the number of fiction books is 4,680. pls make my answer brainliest

Hey Help plz!!!!!!!!!!!!!!!!!!1

Answers

answer is 50.27

explanation: A= πr^2= π4^2=50.265
then it rounds to 50.27

HELPPP ASAP 10 POINTS

Answers

99 i think cuz 11 times 9

Please help me ASAP
NO LINKS or files

Answers

Answer:

1 (-9, -4)

2 (-6, 2)

Step-by-step explanation:

1- when you reflect along the x axis keep the x the same and change the y.

2- when you reflect along the y axis keep the y the same and change the x.

is it yes or no please!

Answers

Answer:

Yes

Step-by-step explanation:

the sign is a less then or equal to sign therefore, p is less then or equal to seven so anything seven and below is possible.

The sphere's radius is half the radius of the hemisphere. How does the volume of this hemisphere compare with the volume of the sphere?

Answers

Answer:

Radius of the sphere = r

Volume of sphere:

V₁ = 4/3×πr³

Radius of the hemisphere = 2r

Volume of the hemisphere:

V₂ = 1/2×4/3×π(2r)³ = 1/2×8×4/3πr³ = 4V₁

The volume of the hemisphere is 4 times greater than the volume of the sphere

Find and interpret the mean absolute deviation of the data. Round your answer to the nearest tenth, if necessary. The mean absolute deviation is . Question 2 response - correct

Answers

Required data:

_______________

| 60 | 105 | 80 | 125 |

| 140 | 95 | 65 | 170 |

----------------------------

Answer:

Mean absolute deviation = 30

Variability of the data about the mean value is 30

Step-by-step explanation:

Mean = Σx / n

n = sample size = 8

Mean = (60 + 105 + 80 + 125 + 140 + 95 + 65 + 170) = 840 / 8 = 105

Mean absolute deviation = Σ|x - mean| ÷ n

( |60-105| + |105-105| + |80-105| + |125 - 105| + |140-105| + |95-105| + |65-105| + |170-105|) / 8

(45 + 0 + 25 + 20 + 35 + 10 + 40 + 65) / 8

240 / 8

= 30

The variability of data about the central point or mean value is 30.

Can someone help with these two questions?

Answers

124.1 inches because area of base x height is the volume , or lxwxh

What is the mean,median,and mode of 80, 70, 60, 50, 90, 70, 65, 65, 65, 85.

Answers

Mean: 70
Median: 67.5
Mode: 65

Martha bought a 0.35​-kilogram bottle of spice. She uses 70 grams a week. Is one bottle of spice enough for 6 ​weeks? Explain.

Answers

Answer: No

Step-by-step explanation:

She needs more than the bottle provides

Write 73.654 correct to 1 decimal place

Answers

Answer: 73.7

5 rounds up so you add 1 to the 6

can someone help me with this??????

Answers

Answer:

anong grade po yan

Step-by-step explanation:

idont know

There are 85 mini chocolates in a bowl. The ration of kit kats to hersheys bars is 8:7. About how many kit kats were there?

Answers

Answer:

45

Step-by-step explanation:

Total mini chocolates in a bowl= 85

ration of kit kats to hersheys bars = 8:7

ration of kit = 8

Total ratio= 15

Number of kit kats= ratio of kit Kat/ total ratio × total number of mini chocolates

Number of kit Kat = 8/15 × 85= 45

Hence, there are 45 kit kats present there.

Answer:

There were about 45 kit kats.

Step-by-step explanation:

With the information provided, you know that the the ratio of kit kats to hersheys bars is 8:7 and that there are 85 mini chocolates in a bowl, so to be  able to find the number of kit kats there first you can say that you have 15 units because if you add the numbers on the ratio 8+7=15. Then, you divide the total amount of mini chocolates by the units to find the number of chocolates in each unit:

85/15=5.66

Now, you can multiply the ratio of hersheys bars which is 7 for the number of chocolates per unit to find the amount of hersheys bars:

7*5.66=40

Finally, you can multiply the ratio of kit kats which is 8 for the number of chocolates per unit to find the amount of kit kats:

8*5.66=45

According to this, the answer is that there were about 45 kit kats.

PLEASE SOLVE THIS ITS URGENT ​

Answers

I am pretty sure that it should be D
the answer is D. 17 miles !!!!

Can someone help me with this geometry volume question ty

Answers

I’m pretty sure it would be B

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

Answer:

mean only

Step-by-step explanation:

the expensive house does not affect mode or median :)

Answer:

A

Step-by-step explanation:

Solve for x:
3x^5= 81

Answers

Answer:

The answer is x = 5 square root of 27

Step-by-step explanation:

3x^5 = 81

3x^5 / 3 = 81 / 3

x^5 = 27

So the answer is x = 5 square root of 27

The polynomial x3 + 8 is equal to

(x + 2)(x2 – 2x + 4).
(x – 2)(x2 + 2x + 4).
(x + 2)(x2 – 2x + 8).
(x – 2)(x2 + 2x + 8).

Answers

Answer:

(x+2)(x2-2x+4).

Step-by-step explanation:

Answer:

A) (x + 2)(x2 – 2x + 4).

Step-by-step explanation:

on edge

Pls HELPPPP HURRYYY PLSS

Answers

Answer:

A. 1 unit

Step-by-step explanation:

A cube has the same dimensions on each side, and the unit is 1 unit cube, none of the other options match.

You can easily rule out, B & D. That leaves you with A & C, and A makes the most sense, since 1 cubic unit would be the volume, and this question is only asking for the side length.

Good luck, hopefully, this helped!

3. (a) Find the student's total displacement for the entire trip.

(b) What was his total time for the entire trip?

(c) What was his average velocity for the entire trip?

4. (a) What was the student's total distance (the length of his path) for the entire trip?

Plz help ​

Answers

Answers:

1, It took him 21 minutes to reach the end.

2, He biked 8 kph/mph

3, He went 2.9 km/ 1.8 mi.

ur welcome

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What is the Mean, Median, Mode, and Range for number 4

Please help

Answers

Answer:

Mean: 63. Median: 69. Mode: 41. Range: 51.

Step-by-step explanation:

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order from smallest to largest, so you may have to rewrite your list before you can find the median. The "mode" is the value that occurs most often. If no number in the list is repeated, then there is no mode for the list. The "range" of a list a numbers is just the difference between the largest and smallest values.

Hope this helps!

A robot vacuum advertises that it can clean a 120-square-foot room in 1/2 an hour. How many square feet could the robot vacuum clean in 1 hour?​

Answers

Answer: 240 square foot room

Step-by-step explanation: They ask for how many square feet in 1 hour which is double the 1/2 hour. So, just do 120x2=240 to get your answer! (Don’t forget to label ,square-feet,)

Lisa got a $50 gift card to an online music store. She uses the gift card to buy an album for $10. She also wants to use the gift card to buy some individual songs. Each song costs $1.50.

Which of these inequalities describes the situation for the total amount that Lisa can spend, where n is the number of songs Lisa wants to buy?

Group of answer choices

10 - 1.50n ≤ 50

10 + 1.50n ≥ 50

10 - 1.50n ≥ 50

10 + 1.50n ≤ 50

Answers

Answer:

The fourth answer choice: 10 + 1.50n < 50

I would appreciate Brainliest but no worries.

Please answer quickly!!!!! Will give the brainiest There is a pic attached.

Answers

Answer:

A. 2/3

Step-by-step explanation:

There are 12 tiles in total, and 8 tiles with numbers that are greater than 4.

Express this as a fraction:

8/12

Simplify:

2/3  

Hope this helps

HELP DUE IN 10 MINS!

m∠WXZ =??

Answers

Ur answer is 64°

180-(90+26)= 64
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