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ohaa [14]
3 years ago
10

When salt and water are combined, they form a salt or saline solution. How much ml of water must be added to 150 mL of an 80% sa

line solution to produce a 30% saline solution?
Mathematics
1 answer:
Karolina [17]3 years ago
3 0
50%. Might be wrong but all I did was reduce 30% from 80%
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A radio disc jockey has 7 songs on this up coming hour's playlist: 2 are rock songs, 2 are reggae songs and 3 are country songs.
SVETLANKA909090 [29]

Answer:

Probability that song selected after first selection is rock = 2/7

Probability that song selected from the remaining after second selection is country rock = 1/2

Step-by-step explanation:

Total number of songs = 7

After first selection, probability that the song selected is rock = 2/7

After second selection, probability that the song selected from the remaining is a country song = 3/6 = 1/2

8 0
3 years ago
What is the equation of a line that is parallel to  −3x+4y=4 and passes through the point (4,0)?
Genrish500 [490]
So you have to first put put the equation in slope-intercept form.
-3x+4y=4
+3x      +3x
_______________
4y=4+3x
then you divide 4 by 4 and then divide 3x by 4 and you should get y=1+3/4x
then you plug in x and only x so that you can find y and then do the same once you find y 
y=1+ (4)3/4
y= 1+3
y=4
then plug in y and solve for x
4= 1+ 3/4x
subtract 1 from both sides
3=3/4x
divide both sides by 3/4
and x=4 
so then you find b and put it all in a equation.

3 0
3 years ago
2 Antonio is a set designer. He is gluing ribbon on 4 square and 2 triangular posters to be used as stage props in an upcoming p
Lana71 [14]

Answer:

89283

Step-by-step explanation:

8 0
2 years ago
What is the simplified from of 4x^2-25 over 2x-5?
stealth61 [152]
We can factor <span>4x^2-25 into (2x +5) * (2x -5) and
dividing by (2x -5)
yields (2x +5)

That neatened up pretty nicely.</span>
3 0
3 years ago
Which expression is equivalent to 2la+26)-2-26?
snow_tiger [21]

Answer:

Dear user,

Answer to your query is provided below

2(al−1) is the expression equivalent for 2la+26−2−26

4 0
3 years ago
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