7. A hospital supply room only has a 70% hydrogen peroxide solution and a 90% hydro-
gen peroxide solution. How many liters of each should be mixed to obtain 50 liters
of a 85% solution? You must set up an equation and solve to receive credit.

Answers

Answer 1

Answer: 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.

Step-by-step explanation:

Let x = Quantity of 70% hydrogen peroxide solution.

y = Quantity of 90% hydrogen peroxide solution.

To obtain: 50 liters of a 85% solution.

x+y =50   (i)   (Total quantity of solution)

0.70x+0.50y=0.85(50)   (Total quantity of  hydrogen peroxide)

⇒ 0.70x+0.50y= 42.5 (ii)

Multiply 0.70 to (i) , we get

[tex]0.70x+0.70y=0.70(50)\\\\\Rightarrow\ 0.70x+0.70y=35\ \ \ \ (iii)[/tex]

Subtract (iii) from (ii), we get

[tex]0.20y=7.5\\\\\Rightarrow\ y=\dfrac{7.5}{0.20}\\\\\Rightarrow\ y=37.5[/tex]

Put value of y in (i) , we get

[tex]x+37.5=50\\\\\Rightarrow\ x=50-37.5\\\\\Rightarrow\ x= 12.5[/tex]

Hence, 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.


Related Questions

Ok please somebody help me “For every 330 feet a person travels up a mountain the temperature drops 1 °F. If the temperature is 78 °F. at the base of a 6,270- foot mountain, what is the temperature at the peak?”

Answers

I believe it's 19 degrees Fahrenheit. Sorry if I'm wrong, but you take the base (6270) and divide it by 330 to find how many times it changes, or the temp. At the peak

The scale of the map measures 1 inch : 1250 miles. if the distances between two cities measure 3 inches on the map, find the actual distance between the two city on the ground

Answers

Answer:

3,750 miles

Step-by-step explanation:

Because one inch is 1250 miles so time that by three you get 3,750

I need help on this. Only right answers only please..

Answers

f(3)= 2
f(16) =16
f(x) is the same thing as y so you can solve it the same way as any other equation. the only difference is when it has a number in the parentheses. if there is a number in the parentheses you will replace all of the x’s in the equation with that number. for example:

original problem problem with f(3)
f(x)=2x*-3x-7 f(3)= 2(3*)-3(3)-7

PLEASE SOMEONE HELP ME. I WILL BRAINLIEST YOU AND GIVE YOU POINTS.

Answers

its b looooooooook  hgshk djcsgIUGUF

Ms. Patel drove 165 miles in 3 hours. If she continues driving at the same speed, how many miles will Ms. Patel drive in 7 hours?

Answers

Answer:

1155

Step-by-step explanation:

165 × 7 = 1155

i hink this is the answert

HELP PLEASE ! What is 8x^3+3+6x^2+4x factored? (Show steps please !)

Answers

Add (4x + 3) x (2x 2+1) to get your answer

During summer, the height of the water in a pool decreased by 2 inches each week due to evaporation. What is the change in the height of the water over an 8 week period??

Answers

Answer:

16in or 1ft 4in

Step-by-step explanation:

Which value of X will allow the following set of ordered pairs to represent a function? (3,7) (2,6) (x,8) (1,5)

Answers

Answer:

[tex]x[/tex] must be number different to 1, 2 and 3 to guarantee that given relation is a function.

Step-by-step explanation:

From Function Theory, we know that a function is a relation in which all domain elements are not related to at least two different elements from range. Which means that [tex]x \in \mathbb{R}-\{1,2,3\}[/tex], that is, that [tex]x[/tex] is a real number different to 1, 2 and 3.

Hence, we conclude that [tex]x[/tex] must be number different to 1, 2 and 3 to guarantee that given relation is a function.

Help meee PLEAAASEEEEEEEEEEEE

Answers

The answer would be C.
Y=-20/133x - 10/19

Which expression uses the associative property to make it easier to evaluate 6(3/2 * 1/5)?

A. (6 * 3/2)1/5
B. (3/2 * 1/5)6
C. 6(3/2 * 1/5)
D. 6(1/5 * 3/2)

Answers

The right one is C because it easier to multiple

Answer:

A. (6*3/2)1/5

Step-by-step explanation:

A-P-E-X

3.6.2 CST

Jonathan is dowloading a movie on netflix the movie is approximately 720 MB if the movie takes 20 seconds to download what is the rate

Answers

Answer:

r,myp5\6t[

Step-by-step explanation:

write an equation of the line with the given information. m. 4. A(-1.-5)

Answers

Answer:

An equation of the line with the given information with

m = 4 and point A(-1, -5) is:

[tex]y=4x-1[/tex]

Step-by-step explanation:

As the equation of a line in point-slope form is given by:

[tex]y-y_1=m\left(y-x_1\right)[/tex]

where m is the slope.

Given:

the slope m = 4 the point A(-1, -5)

Substituting the values in the equation of a line in point-slope form

[tex]y-y_1=m\left(x-x_1\right)[/tex]

[tex]y\:-\:\left(-5\right)\:=\:4\:\left(x\:-\:\left(-1\right)\right)[/tex]

[tex]y+5=4\left(x+1\right)[/tex]

subtract 5 from both the sides

[tex]y+5-5=4\left(x+1\right)-5[/tex]

[tex]y=4x-1[/tex]

Therefore, an equation of the line with the given information

with m = 4 and point A(-1, -5) is:

[tex]y=4x-1[/tex]

what this dont get it

Answers

Answer:

[tex]4p+3[/tex]

Step-by-step explanation:

All this question is asking you to do is simplify the given expression by combining like terms.

The point of combining like terms is that you can only combine, well, like terms. Like terms are terms that have the same variables and are raised to the same power. This means that in this case, we can't combine [tex]4[/tex] and [tex]6[/tex] because [tex]4[/tex] is attached to a variable. However, we can combine 6 and -3 because they are like terms; neither is attached to a variable. So, you end up with [tex]4p+3[/tex].

I hope this helps!

Consider the following graph which represents the solutions to a system of inequalities. Which of the following systems of inequalities does the graph represent?​

Answers

Answer:

The system of inequalities is -2x + y > 0    -x + y ≥ 0

Step-by-step explanation:

The form of the equation of a line is y = m x + b, where

m is the slopeb is the y-intercept

The line passes through the origin, then

The value of b = 0The form of the equation is y = m x

Let us look at the graph to find the correct answer

∵ One of the lines are solid and the other is dashed

∵ The shaded area is over the two lines

The signs of the two inequalities are ≥ and >

∵ The two lines pass through the origin

→ That means the y-intercepts are 0

The form of the inequalities are y ≥ m[tex]_{1}[/tex] x and y > m[tex]_{2}[/tex]

There are only two answers that have these forms, so we must find the slope of each line

∵ m = [tex]\frac{y2-y1}{x2-x1}[/tex] , (x1, y1) and (x2, y2) are two points on the line

∵ The solid line passes through points (0, 0) and (2, 2)

∴ m[tex]_{1}[/tex] = [tex]\frac{2-0}{2-0}[/tex] = [tex]\frac{2}{2}[/tex] = 1

→ Substitute it in the form of the equation

∴ y ≥ 1(x)

∴ y ≥ x

→ Subtract x from both sides

-x + y ≥ 0

∵ The dashed line passes through points (0, 0) and (1, 2)

∴ m[tex]_{2}[/tex] = [tex]\frac{2-0}{1-0}[/tex] = [tex]\frac{2}{1}[/tex] = 2

→ Substitute it in the form of the equation

∴ y > 2(x)

∴ y > 2x

→ Subtract 2x from both sides

-2x + y > 0

The system of inequalities is -2x + y > 0    -x + y ≥ 0

Answer:

The system of inequalities is -2x + y > 0    -x + y ≥ 0

Step-by-step explanation:

i did it

Factor the linear expression 15x-10 using the greatest common factor of the terms
A.5(3x + 2)
B.5(3x - 10)
C.5(3x- 2)
D.15(x- 2)​

Answers

Answer:

The answer would be A (3x+2).

Answer: 5(3x-2) - Choice [C]

Step-by-step explanation:

Hii, do you need to factor the expression 15x-10? Np! (:

Note that 15x and -10 have a 5 in common.

To factor it out, we divide 15x and -10 by 5

3x-2 is what we obtain

Next we put parentheses around 3x-2

(3x-2) is what we obtain.

Finally, we put 5 outside the parentheses

5(3x-2)

Voila! There's our answer, cheers! (:

--

Hope that this helped! Best wishes.

--

an equation in slope-intercept form that passes through the points ( 14, -15) , ( 7, -15 ).

Answers

Here you go!! I hope this helps

What was the greatest impact farmers made in China

Answers

Answer:China made up $5.9 billion in U.S. farm product exports in 2018, according to the U.S. Census. It’s the world’s top buyer of soybeans and purchased roughly 60 percent of U.S. soybean exports last year.

Step-by-step explanation:

What’s the slope of the line? Please help!!

Answers

Answer:

1

Step-by-step explanation:

Answer:

y=x+2

Step-by-step explanation:

:)

sarah works part time in a shop

Answers

There is no picture attached..

Find the equation of the line passing through the points (3,3) and (4,5)

Answers

Answer:

Y = Mx + B

Step-by-step explanation:

I think it's ur answer.

what is P versus NP, its supposed to be one of the hardest questions in the world

Answers

Answer:

P is the set of problems whose solution times are proportional to polynomials involving N's. ... NP (which stands for nondeterministic polynomial time) is the set of problems whose solutions can be verified in polynomial time. But as far as anyone can tell, many of those problems take exponential time to solve.

Step-by-step explanation:

YW!!!

Juan is three times as old as Gabe and Gabe is six years older than Catherine. If the sum of their ages is 149, how old is each person? Define a variable, write an equation, solve the equation, and answer in a complete sentence.

Answers

Answer:

Juan = 93 years.

Gabe = 31 years.

Catherine = 25 years.

Step-by-step explanation:

Let the age of Juan = J

Let the age of Gabe = G

Let the age of Catherine = C

Translating the word problem into an algebraic equation, we have;

[tex] J = 3G[/tex] ..........equation 1

[tex] G = C + 6 [/tex] ........equation 2

[tex] J + G + C = 149 [/tex] ........equation 3

We would solve the linear equations by using the substitution method;

Substituting equation 2 into equation 1;

[tex] J = 3(C + 6)[/tex]

[tex] J = 3C + 18[/tex] ........equation 4

Substituting equation 2 and equation 4 into equation 3;

[tex] (3C + 18) + (C + 6) + C = 149 [/tex]

Simplifying the equation, we have;

[tex] 5C + 24 = 149[/tex]

[tex] 5C = 149 - 24[/tex]

[tex] 5C = 125[/tex]

[tex] C = \frac {125}{5}[/tex]

C = 25 years.

To find G; from equation 2

[tex] G = C + 6[/tex]

Substituting the value of "C" into equation 2, we have;

[tex] G = 25 + 6[/tex]

G = 31 years.

To find J; from equation 1

[tex] J = 3G [/tex]

Substituting the value of "G" into equation 1, we have;

[tex] J = 3 * 31[/tex]

J = 93 years.

Therefore, Juan is 93 years old, Gabe is 31 years old and Catherine is 25 years old.

Name two planes that intersect in SW in the figure to the right

Choose the correct answer below.

A. plane XTS and plane TSR
B. plane STX and plane VRQ
C. plane XTS and plane VRS
D. plane TSR and plane VRS​

Answers

Answer:

a is the right answer you got this

Step-by-step explanation:

Graph the line that represents the equation please

Answers

Answer:

graph it on -1/2

Step-by-step explanation:for the y-axis you would put it on -1 and for the x axis put it on 2 :) if its wrong please lmk! or if you need help let me know

The domain of a function f(x) is the set of all integers from 0 to 10, and the range of f(x) is the set of all in
from 0 to 5.
Which of the following statements must be FALSE?
SELECT ALL THAT APPLY.
f(8) = 3
f(0) = 7
f(-1) = -8
f(0) = -5
f(10) = 2
f(1) = 2
f(0) = 0

Answers

I think that the correct answer is f(-1)=-8 and f(0)=-5
I hope this helps :D

can any expert help me plzzzzzzzz..........​

Answers

Answer:

i=f

ii= 3-1/20

iii=3.43234

iv=a

v=12

Step-by-step explanation:

HURRY PLEASE!!!!!!

Identify the pairs of supplementary angles (hurry i’m begging)

Answers

Answer:

It's: A

Step-by-step explanation:

the time, t, in seconds, is required for an object accelerating at a constant rate of a meters/second to travel a distance of d meters is given this equation

Answers

Answer:

C. [tex] d = \frac{at^2}{2} [/tex]

Step-by-step explanation:

Given:

[tex] t = \sqrt{\frac{2d}{a}} [/tex]

Required:

Make d the subject of the formula.

SOLUTION:

[tex] t = \sqrt{\frac{2d}{a}} [/tex]

Square both sides

[tex] t^2 = (\sqrt{\frac{2d}{a}})^2 [/tex]

[tex] t^2 = \frac{2d}{a} [/tex]

Multiply both sides by a

[tex] a*t^2 = \frac{2d}{a}*a [/tex]

[tex] at^2 = 2d [/tex]

Divide both sides by 2

[tex] \frac{at^2}{2} = \frac{2d}{2} [/tex]

[tex] \frac{at^2}{2} = d [/tex]

[tex] d = \frac{at^2}{2} [/tex]

Solve the simultaneous equations
2x + 3y = 6
7x – 2y = 1

Answers

Answer:

x=0.6, y=1.6

Step-by-step explanation:

Multiply the first equation by 2 and the second equation by 3, so we can cancel out the y terms:

4x+6y=12

21x-6y=3

Add these 2 equations together:

25x=15

x=0.6

Now, to solve for y, plug x back into any of the equations above:

2(0.6)+3y=6

1.2+3y=6

3y=4.8

y=1.6

Answer:

Below in bold.

Step-by-step explanation:

2x + 3y = 6             Multiply by 2:

7x – 2y = 1             Multiply by 3:

4x + 6y = 12

21x - 6y = 3              Adding:

25x = 15

x = 0.6.                      Substitute x = 0.6 into the first equation:

2*0.6 + 3y = 6

3y = 6 - 1.2 = 4.8

y = 1.6.

helpppppppppppppppppp plzzzzzzzzzzzzzzzzzz

Answers

Answer:

Step-by-step explanation:

A

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