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zlopas [31]
3 years ago
15

Solve n/3+ (-4) = -2. Plz im in an exam

Mathematics
1 answer:
nadya68 [22]3 years ago
7 0
N=6

N/3-4=-2
N-12=-6
N-6+12
N=6

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Combine like terms to simplify the expression: -5.55-8.55c+4.35c
Lera25 [3.4K]

Answer:

-5.55 - 4.2c

Step-by-step explanation:

-5.55 - 8.55c + 4.35c

'-8.55c' and '4.35c' are like terms because of them containing the same variable of 'c'.

Combine:

-5.55 - 8.55c + 4.35c

  • -8.55 + 4.35 = -4.2

-5.55 - 4.2c

Hope this helps.

4 0
4 years ago
200 kg of brass is melted down and cast into ornamental frogs, each weight 3/20kg. How many frogs are made?
Savatey [412]

Answer:

1,333 frogs

Step-by-step explanation:

okay so we know that mass remains conserved no matter where you are.

same here ^^

if the total mass of brass is 200 kg

the total mass of the new frogs formed from it when put together will be the same :)

and if there were n such frogs formed

we have,

total mass = n × mass of each frog

200 = n × 3/ 20

n = 4000/ 3

so it becomes something like 1,333.33

that is nearly 1,333 frogs can be made out of 200 kg of brass each weighing 3/ 20kg (the last ones a bit less to make upto 200kg)

5 0
3 years ago
The sum of a number times 3 and 18 is at most -15.
Gala2k [10]

Answer:

x=<-11

Step-by-step explanation:

3x+18=<-15

3x=<-33

x=<-11

8 0
3 years ago
Read 2 more answers
20 POINTS IF YOU HELP ME!!!!!!!!! <br> Solve for EF in trapezoid ABCD<br> 5x - 4<br> 4x<br> 6x - 2
Rus_ich [418]
So hmm check the picture below

\bf 4x=\cfrac{(6x-2)+(5x-4)}{2}\implies 8x=6x-2+5x-4&#10;\\\\\\&#10;8x-6x-5x=-2-4\implies -3x=-6\implies x=\cfrac{-6}{-3}\implies \boxed{x=2}

5 0
3 years ago
10. 14. A new DVD player has a purchase price of $430. With the extended warranty, the total cost is
sergejj [24]
Subtract 430 and 512 and turn into a percent
82%
Than 430+512is942
Divide by 82%is11.487804
Skip a few times until u reach 11.48
Add 4+8 and then dvd:1 dvd to buy
So 4+8is12 plus 11 is 23 and one dvd it’s 24
So the answe is 24%
5 0
3 years ago
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