1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Phantasy [73]
3 years ago
10

A scientist needs 10 liters of a 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the

nearest tenth of a liter, about how many liters of the 5% and the 40% solutions should she mix to get the solution she needs? Choose the equation to match the situation
Mathematics
1 answer:
tamaranim1 [39]3 years ago
8 0

Answer:

The volume of 40% solution= 4.3L

The volume of 5% solution= 10L - 4.3L= 5.7L

Step-by-step explanation:

From the given information:

Let consider  x to be the of volume 40% solution

therefore the volume of 5% is said to be:

10 L= 40% solution volume + 5% solution volume

10 L= (x + 5%) solution volume

making 5% solution volume the subject; we have

5% solution volume= 10 L - x

To estimate the value of the volume, we now have:

Volume  of 20% × Concentration of  20%= (Volume of 40%  × concentration40%) + (Volume of 5% × Concentration of 5% )

∴

10L  ×  20%= (x) L × 35% + 10 L × 5%

(x) L × 35 = 10L × 20 - 10 L × 5 = 10 L × 15

x L = 10L \times \dfrac{15}{35}

x = 4.28 L

x \simeq 4.3L

∴

The volume of 40% solution= 4.3L

The volume of 5% solution= 10L - 4.3L= 5.7L

You might be interested in
Help me to solve it.​
Artemon [7]

Answer:

That is my answer to your question

4 0
2 years ago
What would my grade be if i had a 76% in the class, then got a 0% on a test worth 70% of my grade?
ExtremeBDS [4]

Answer:

I believe it would be 6

7 0
3 years ago
Given that cosA = -8/17  and sinA is negative, determine the value of tanA.​
borishaifa [10]

Answer:

tan A = -15/8.

Step-by-step explanation:

sin^2a = 1 - cos^2A

= 1 - (-8/17)^2

= 225/289

So sin A= 15/17

tan A = sin A / cos A

=  15/17 / -8/17

= 15/-8

= -15/8.

5 0
3 years ago
Simplify 26-18b+11(b-3)
xxMikexx [17]

Answer:

<u>-7b-7</u>

Step-by-step explanation:

First you have to distribute 11 throughout the parentheses.

26-18b+11(b-3)\\26-18b+11b-33

Now we can combine like terms. (-18b, 11b, -33, 26)

-18b+ 11b  and -33+26

-7b-7

This is your simplified answer for your expression.

<u>-7b-7</u>

6 0
2 years ago
Read 2 more answers
A sphere and a cylinder have the same radius and height. The volume of the cylinder is 18 centimeters cubed.
bezimeni [28]

Answer:

option a

卄卂ᐯ乇 卂 几丨匚乇 ᗪ卂ㄚ

4 0
2 years ago
Read 2 more answers
Other questions:
  • What’s the area of a circle with 7.4 meters
    15·1 answer
  • Describe the pattern below<br><br> 3 6.5 11 16.5 23
    5·1 answer
  • Tom buys a shirt for 22.00 plus 7% sales tax. His cousin buys a shirt for 18.00 plus sales tax. How much do tom and his cousin p
    12·2 answers
  • john is planning to purchase a new car that cost 15500. on average a new car loses 11% of its value to the moment that is drivin
    7·1 answer
  • Can someone help me with #22
    5·1 answer
  • Is -8-2(3+2n) +7 equivalent to -30-13n
    11·1 answer
  • The point (3, 6) is on the graph of y= 5f(2(x+3))-4 . Find the original point on the graph of y=f(x).
    6·1 answer
  • Please help... I'm struggling
    9·1 answer
  • 00010000.00100010.10000100.10000001
    8·1 answer
  • PLSSSSSS !!!!!!HELO ME When a transversal crosses a pair of parallel lines, which types of angle pairs are supplementary?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!