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allsm [11]
3 years ago
12

A researcher needs 60 L of 50% concentrate solution for a certain experiment, but she has only 30% solution and 70% solution. Ho

w many liters of the 30% and the 70% solutions should she mix to get what she needs? ​
Mathematics
1 answer:
Dahasolnce [82]3 years ago
7 0

Answer:3300

Step-by-step explanation:

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if any one can help me that would be awesome 1. − 8 = 5 b − 3 b 2. k − 8 + 6 k = 20 3. 723. 4. 6 ( 3 + 3 x ) = 72 364. 5 ( m + 4
Morgarella [4.7K]

Answer:

1)b=-4

2)k=4

3)can u explain what #3 and 4 say

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Step-by-step explanation:

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4 years ago
Ben has 4 more than twice as many cd's as jake. if they have a total of 31 cd's, home cd's does jake have ?
Anvisha [2.4K]
These are the equations given:
31=B+J
B=2J+4

So you substitute B=2J+4 into 31=B+J

31=2J+4+J

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8 0
4 years ago
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12/3 divided by 3/5 PLEASE HELPP MEEEE
Ad libitum [116K]

Answer:

If it looks like this then this is the answer but other wise say it more specific. 12/3=4 3/5=0.6....4/0.6=6.67

6 0
3 years ago
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Make x the subject of the formula x/a -b=c
horrorfan [7]

Answer:

x ÷ a - b = c

x a-b both side

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7 0
3 years ago
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What does (x^2 - 3x + 1) + (2x^2 + 5x + 7) equal?
alisha [4.7K]

Answer:

3x^2+2x+8

Step-by-step explanation:

1. x^2+2x^2=3x^2

2. -3x+5x=2x

3.1+7=8

5 0
4 years ago
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