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2 years ago

How many gallons of a 12% salt solution should a biologist add to 5 gallons of a 15% salt solution to get a 14% solution?

Mathematics

1 answer:

Zarrin [17]2 years ago

4 0

The volume of the 12% salt solution to be added is; 2.5 gallons.

<h3>Ratio and Proportion of Volume</h3>

Let the volume of 12% required be x and the new volume of the mixture be (x+5).

On this note, it follows that;

12x + 15(5) = 14(5+x)

12x + 75 = 70 + 14x.

Hence, -2x = -5

Divide both side by -2;

x = -5/-2

x = 2.5 gallons.

Read more on ratios and Proportions;

brainly.com/question/13513438

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Find the median and mean of the data set below:<br> 47,15, 6, 49, 45, 30

Georgia [21]

Answer:

The median of the data set:

6, 15, 30, 45, 47, 49

The middle numbers are 30 and 45 so

You have to do 30 + 45

= 75

Then do 75 ÷ 2

= 37.5

The mean of the data set:

47, 15, 6, 49, 45, 30 (add them all)

= 192

Then divide 192 by 6 (because there are 6 numbers)

192 ÷ 6

= 32

So the median is 37.5 and the mean is 32.

Step-by-step explanation:

Hope this helps!

From your neighborhood softie :)

5 0

2 years ago

John filled his car gas tank with 21 gallons of gas. He paid $54.39. What was the price of 1 gallon

Bond [772]

Answer:

2.59

Step-by-step explanation:

Divide $54.39 by 21.

3 0

2 years ago

Read 2 more answers

F(v)=6+v^2 how do I solve

Nostrana [21]

Step-by-step explanation:

Well, this is a function. In order to solve this, you need a v value. Once you get a v value, you can plug into into 6+v^2 and wala- you get your answer.

Example, lets say

v is 3

then

F(3) = 6 + 3^2

f(3) = 6 + 9

f(3) =15

Hope this helped

6 0

3 years ago

Two types of memberships are available for a theme park:

sergiy2304 [10]

The equation 2v-41=0 can be used to find the number of visits that would make two memberships cost the same amount.

Step-by-step explanation:

Given,

Per month charges of type 1 = $86

Per visit charge = $3

Let,

v be the number of visits.

T(v) = 3v+86

Per month charges of type 2 = $45

Per visit charge = $5

P(v) = 5v+45

For same amount to be charged;

T(v) = P(v)

$3v+86=5v+45\\86-45=5v-3v\\41=2v\\2v-41=0$

The equation 2v-41=0 can be used to find the number of visits that would make two memberships cost the same amount.

8 0

2 years ago

Will give brainliest if answer correct// if p(x)= 3x^6 - 5x^5 - x + 7 , then p(2) equals: ??

djverab [1.8K]

$\\ \tt\hookrightarrow p(2)=3(2)^6-5(2)^5-2+7$

$\\ \tt\hookrightarrow p(2)=3(64)-5(32)+5$

$\\ \tt\hookrightarrow p(2)=192-160+5$

$\\ \tt\hookrightarrow p(2)=32+5$

$\\ \tt\hookrightarrow p(2)=37$

Option B is correct

4 0

2 years ago

Read 2 more answers