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bixtya [17]
3 years ago
12

Pls help give u a free brainlist

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
3 0

Answer:

correct answer is J

Step-by-step explanation:

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A 40% antifreeze solution is to be mixed with a 70% antifreeze solution to get 240 liters of a 64% solution. How many liters of
Alexxandr [17]

Answer:

We have 40% antifreeze and 70% antifreeze and we need to make 240 liters of 64% antifreeze.

We set up 2 equations where "f" is the 40 % and "s" is the 70%

A) f + s = 240

B) .40f + .70s = (.64 * 240) (or 153.6)

To solve both equations we multiply A) by -.40

A) -.40 f  - .40 s = -96.00   then we add this to B)

B) .40f + .70s = 153.60

.30s = 57.6

s = 192

f = 48

48 liters of 40% = 19.20 liters of antifreeze

192 liters of  70% = 134.40 liters of antifreeze

That equals 153.60 liters of antifreeze in a TOTAL liquid amount of 240 liters.

Double Check

153.60 / 240 = 64% antifreeze.

Step-by-step explanation:

6 0
3 years ago
Is point (2,1) on the the line represented by the equation x+2y=5
Sphinxa [80]
To check if this point lies on the line, plug in a 2 for x and a y for 1 and solve

x+2y=5
2+2(1)=5
4=5

Since this statement isn't true, then the point doesn't lie on the line

Hope this helps

6 0
3 years ago
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I need answers please
lakkis [162]

Answer: the first one

Step-by-step explanation:

It is the only one that is right

8 0
3 years ago
How do U solve this?​
Sonbull [250]
See photo for solution and mark me as brainliest if you think i helped!

4 0
2 years ago
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EASY EXTRA POINTS HELP ASAP
Shkiper50 [21]

Answer:

(1,-1)

Step-by-step explanation:

The intersection of the two lines

5 0
3 years ago
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