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3 years ago

How much water must be added to 5 qt of a saline solution that is 20% salt in order to reduce it to 15% salt?

Mathematics

1 answer:

jeka943 years ago

7 0

Answer:

your answer is 40

Step-by-step explanation:

5+20+15=

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I Need Number 4 &' 6

adoni [48]

4 is again c because you should put the 2 here 2a'2-1 so this is 2a'1 and this is 20 so
A2 is 20
Than you should again do this and find a3 ...

4 0

3 years ago

for some real number A, the graph of the line Y=(A+1)x+8 in the standard (x,y) coordinate plane passes through (2,6). What is th

kondaur [170]

Answer:

-1

Step-by-step explanation:

The given equation has a y-intercept of 8, so goes through the point (0, 8).

If the line also goes through the point (2, 6) it has a slope of ...

(y2 -y1)/(x2 -x1) = (6 -8)/(2 -0) = -2/2 = -1

The slope of the line is -1.

_____

The value of A is -2.

8 0

3 years ago

Roxanne has $80 in a savings account. The interest rate is 10%, compounded annually. To the nearest cent, how much will she have

finlep [7]

104 because 10% of 80 is 8 years meaning 8+8+8=24 add 24 to 80 and ur answer is 104

3 0

3 years ago

Can someone help me with my math homework?

zhenek [66]

See explanations

Step-by-step explanation:

6. The fraction can be written as;

$\frac{x^2}{2y} /\frac{y^2}{4} \\\\\frac{x^2}{2y} *\frac{4}{y^2} \\\\$

Divide 4 by 2

= $\frac{2x^2}{y^3}$

The fraction can be written as;

$\frac{b^2}{6} /\frac{b}{a}$

introduce product sign as

$\frac{b^2}{6} *\frac{a}{b} \\\\=b*a/6\\=\frac{ab}{6}$

The fraction can be written as;

$\frac{x}{y} /\frac{yx}{2}$

Introduce product sign

$\frac{x}{y} *\frac{2}{yx} \\\\=\frac{2}{y^2}$

The fraction can be written as;

$\frac{x}{y^2} /\frac{x}{y} \\\\\\=\frac{x}{y^2} *\frac{y}{x} \\\\\\=\frac{1}{y}$

10.

The fraction is simplified to;

$\frac{x}{3y} /\frac{9}{x} \\\\\\\frac{x}{3y} *\frac{x}{9} =\frac{x^2}{27y}$

Learn More

Simplifying complex fractions:brainly.com/question/12214941

Keywords: simplifying, complex, fractions

#LearnwithBrainly

6 0

2 years ago

A customer borrowed 2000 and then further 1000 both repayable in 12 months .What would he have saved if he had taken out one loa

creativ13 [48]

Answer:

No savings

Step-by-step explanation:

Let the interest rate be same for all the loans and consider it to be R.

<u>First case</u>

Principal 1 = 2000

Time = 12 moths = $\frac{12}{12}$ = 1 year

Rate = R %

So, interest 1 = Principal * Time * Rate

= 2000 * 1 * R

= 2000R

Now,

Principal 2 = 1000

Time = 12 moths = $\frac{12}{12}$ = 1 year

Rate = R %

So, interest 2 = Principal * Time * Rate

= 1000 * 1 * R

= 1000R

Total interest to be paid = 2000R + 1000R

= 3000R

<u>Second case</u>

Principal = 3000

Time = 12 moths = $\frac{12}{12}$ = 1 year

Rate = R %

Interest = Principal * Time * Rate

= 3000 * 1 * R

= 3000R

We conclude that there would be no savings because the interest to be paid in both the cases are same.

5 0

3 years ago

Read 2 more answers