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
Mazyrski [523]
3 years ago
10

A chemist wishes to mix a 30% acid solution with a 65% acid solution to obtain 175 quarts of 55% acid solution . How many quarts

of each solution should be mixed toguether?
Mathematics
1 answer:
Eva8 [605]3 years ago
7 0

x = quarts of 30% acid solution

y = quarts of 65% solution

x + y = 175

Each quart of the 30% solution contributes 0.30x quarts of acid; similarly, each quart of the 65% solution contributes 0.65y quarts of acid. So

0.3x + 0.65y = 0.55*175 = 96.25

That is, the chemist wants 175 quarts of a new mixture with a 55% concentration of acid, which comes out to 95.25 total quarts of acid. The total amounts of acid from either sides of this equation must balance out.

Now solve for x and y:

x + y = 175  ==>  y = 175 - x

0.3x + 0.65y = 96.25  ==>  0.3x + 0.65(175 - x) = 96.25

==>  0.3x + 113.75 - 0.65x = 96.25

==>  17.5 = 0.35x

==>  x = 50  ==>  y = 125

You might be interested in
Help?? I could really use it
Lynna [10]

Answer:

16.5 m

Step-by-step explanation:

The triangle shown in the figure is a right triangle, so we can use the Pythagoreas Theorem.

a² + b² = c²

a² + 32² = 36²

a² + 1024 = 1296

a² = 272

a = √272

a = 16.5

Answer: 16.5 m

4 0
2 years ago
3/5 is what percent less than 5/3?
AleksAgata [21]
It is 2% and a remainder of 2
5 0
3 years ago
Find the specified vector or scalar. . u = -4i + 1j and v = 4i + 1j; Find |u+v|. a. square root of 34. b. 5. c. 2
ExtremeBDS [4]
U = - 4 i + 1 j
v = 4 i + 1 j
| u | = √ (-4)² + 1² = √ 17
| v | = √4² + 1² = √ 17
| u + v | = √(u + v)²=
= √( u² + 2 u v + v² )= ...
cos ( u, v ) = (-16+1) / (|u| |v|) = -15/17
...= √(17 + 2 · √17 · √17 · ( -15/17) +17)  =
= √ 34 - 30 = √ 4 = 2
Answer: C ) 2 

3 0
3 years ago
A couple of college students frustrated with the current class registration process decide to survey 500 random students on camp
aleksklad [387]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Standard deviation = \sqrt{(n*p)(1 - p)}

Substitute the values in:

\sqrt{(500 *0.84)(1-0.84)} = 8.1975...

This can be rounded to give an approximate answer of 8.2

The answer is option A.

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

8 0
3 years ago
2 kitchen assistants can prepare 10 kg of vegetables in 60 minutes. How long would it take 15 assistants to prepare the same amo
Sonbull [250]
Then just one of them takes 2h. 
<span>If you have 25 assistants, the time is 25 times less: 2/25 hours = 4.8 mins = 4 min and 48 sec.</span>
4 0
3 years ago
Other questions:
  • How many quarters are in $2
    6·2 answers
  • six years ago,brett bought 1,525 worth of cell phone company since then the value of the stock has decreased at an average rate
    5·1 answer
  • Need help with this
    7·1 answer
  • Help!![tex]Janet is buying a $28 necklace. The store reduces the price by 20% and then applies a $2 off coupon. How much will sh
    10·2 answers
  • If you solve this you are a genius......Mr.Harry had 4 daughters ‍‍‍‍ each daughter had a brother ‍♂️ ....How many children does
    10·2 answers
  • What is the property for (s + 2) +4​
    13·2 answers
  • Danny’s dog weighs 45.33 pounds. His cat only weighs 14.89 pounds. About how much more does his dog weigh?
    13·1 answer
  • Find the equation of the line.<br> y = [? ]x + [ ]
    12·1 answer
  • What is the image of (-5,1) after a dilation by a scale factor of 5 centered at the<br> origin?
    6·1 answer
  • If you apply the changes below to the absolute value parent function, f(x) = [X1,
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!