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MaRussiya [10]
3 years ago
11

Help pls ?? anyone ?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
6 0

Answer:

Theyre both going to be 27.

Step-by-step explanation:

2n+21=4n+15

-2n       -2n

21=2n+15

-15      -15

\frac{6}{2}=\frac{2n}{2}

3=n

2n+21

2(3)+21=27

4n+15

4(3)+15=27

:)

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You spend $40 on 5 pounds of concrete. How much would it cost for 7 pounds of concrete
garri49 [273]

Answer:$8

Step-by-step explanation:

Eeeh I looked it up but I’m pretty sure u supposed to divide 40 and 5

8 0
2 years ago
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Doss [256]

Answer:

First point: (1,0)

Second Point: (2,1)

Third Point:  (3,2)

Fourth Point: (8,7)

Step-by-step explanation:

For the first two points, you have to plot the two pairs of coordinates that are given.  After this, you have to plug the x values into the equation to get the missing y values.

For example: The third point

X= 3

Y= X - 1

Y= 3 - 1

Y=2

So this means that the third coordinate is (3,2)


3 0
3 years ago
Permutations and combination question ^^
mario62 [17]

Answer:  22) A

<u>Step-by-step explanation:</u>

First, order doesn't matter so it is a Combination.

<em>In other words, it doesn't matter which person was chosen 1st, 2nd, 3rd, or 4th to bring food because they are all bringing "food".</em>

Next, If you are going to choose  person to 4 people to bring food out of a total of 4 + 3 + 1 = 8 people, you get → ₈C₄

And you are going to choose 3 people to bring decorations out the remaining 8 - 4 = 4 people, you get → ₄C₃

And you are going to choose 1 person to be the host out of the remaining 4 - 3 = 1 person, you get → ₁C₁

"And" means multiplication so altogether you get ⇒  ₈C₄ × ₄C₃ × ₁C₁

3 0
3 years ago
I need some help, please
Masteriza [31]
C. Is correct , Which is the current answer you have selected the median is the middle and since the graph is correct as of leading up to the median is correct
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Drag each tile to the correct box.
Zielflug [23.3K]

The amount of heat depends on three factors:-

#Mass of the material used in bowls.

#Specific heat capacity of the material used in bowls.

#Temperature change.

So, (change in energy) = (mass) x (specific heat capacity) x (temperature change)

Temperature Change = (Change in energy) / (mass x specific heat capacity)

It says "The bowls start at the same temperature, and then the same amount of heat is added to each bowl". It means temperature change varies inversely with product of mass and specific heat capacity.

Higher the product of mass and specific heat capacity, Lower the temperature change, Cooler the bowl will be.

Water’s specific heat capacity is 4.186 joules/gram degree Celsius. Mercury’s specific heat capacity is 0.140 joules/gram degree Celsius.

Water and mercury are put into three identical bowls:

#Bowl A contains 20 grams of water.

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#Bowl C contains 20 grams of mercury.

So, we have (40g x 4.186 J/g) > (20g x 4.186 J/g) > (20g x 0.140 J/g)

It means temperature change in <u>Bowl B < Bowl A < Bowl C.</u>

<u>Hence, Order of the bowls from coolest to warmest, based on their final temperatures would be</u><u> Bowl B < Bowl A < Bowl C.</u>

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