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kifflom [539]
3 years ago
5

Help me plz, thanks.

Mathematics
1 answer:
adell [148]3 years ago
6 0
It is going to be 3/10 because you simplify 6 blue/ 20 total marbles
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Please anybody help please
wel

Answer:

x= -3 and y = 6

Step-by-step explanation:

so basically what you are trying to do is reduce into finding x and y

what you do is you want to find a number to multiply one of the equations in order to get the same x or y value does not matter which

so,...

we can do

either 20x or 15y

we will go with the smallest 15y

so for both equations multiply the whole thing by 5 for the first equation and by 3 for the second

5 x 5x+3y=3 --> 1

3 x 4x+5y=18 --> 2

we then get

25x+15y = 15 -->1

12x + 15y = 54 -->2

then now that you have the same Y values you can subtract ! which cancels out both the 15y

25x+15y = 15 -->1

- 12x + 15y = 54 -->2

13x =-39

so now x=-3 and all you have to do with x = -3 is sub this into either one of the equations that you started with  !

x = -3

5(-3) +3y =3

-15 + 3y = 3

3y = 3+15

3y=18

y = 6!

5 0
2 years ago
A produce store sold 45 red apples. If the ratio of red apples to green apples sold was 5 : 2, what is the combined amount of re
lisabon 2012 [21]

The ratio of Red Apples to Green Apples is 5:2. The proportion of red apple is 5/7.

The store sold 45 red apples.

So the combined amount of red and green apples sold = No of red apples sold divided by the proportion of red apples = 45/ (5/7) = 63

The combined amount of red and green apples sold is 63 apples.

6 0
3 years ago
What are the multiples of 9 that are less than 80?
motikmotik
9,18,27,36,45,54,63,72
6 0
3 years ago
Read 2 more answers
Lainey bought a set of 202020 markers for \$6$6dollar sign, 6.<br> What is the cost of 1 marker?
Galina-37 [17]

Answer:

$0.30

Step-by-step explanation:

6 / 20

0.3

Best of Luck!

4 0
3 years ago
Johnny has 14 apples. He eats 7 and throws away 3, How many does he have left
Liono4ka [1.6K]

Answer:

4 apples left

Step-by-step explanation:

Johnny has 4 apples left because 14 minus how many apples he ate minus how many apples he throws away. 14-7-3=4

4 0
3 years ago
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