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
Umnica [9.8K]
2 years ago
5

A chemist has 30% and 40% solutions of acid available. How many liters of each solution should be mixed to obtain 65 liters of 3

2% acid solution?
liters of 30% acid
liters of 40% acid
Mathematics
1 answer:
mars1129 [50]2 years ago
5 0

Answer:

30 = 80 %

40= 20 %

Step-by-step explanation

I'm sorry for not writing how to do it but it's something like if 30 = 100 then if we had 40 occupying 20 percent of that acid then we will get 32 percent

You might be interested in
Use determinants to find out if the matrix is invertible.
wariber [46]

Answer:

The matrix is not invertible.

Step-by-step explanation:

We are given the following matrix in the question:

A =\left[\begin{array}{ccc}-5&0&1\\-1&3&2\\0&10&6\end{array}\right]

Condition for invertible matrix:

A matrix is invertible if and only if the the determinant is non-zero.

We can find the determinant of the matrix as:

|A| = -5[(3)(6)-(2)(10)]-0[(-1)(6)-(2)(0)] + 1[(-1)(10)-(3)(0)]\\|A| = -5(18-20)+(-10)\\|A| = 10-10\\|A| = 0

Since the determinant of the given matrix is zero, the given matrix is not invertible.

5 0
3 years ago
Which is the graph of the sequence defined by the function f(x + 1) = Three-fifthsf(x) when the first term in the sequence is 37
nadezda [96]

Answer: On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 225), (3, 135), (4, 81).

Step-by-step explanation:

We have the relation:

f(x + 1) = (3/5)*f(x)

such that the first term is 375

Then:

f(1) = 375.

Using the above relation, we have that:

f(1 + 1) = f(2) = (3/5)*f(1) = (3/5)*375 = 225

Then we have the pair (2, 225)

The next term is:

f(2 + 1) = f(3) = (3/5)*f(2) = (3/5)*225 = 135

Then we have the pair (3, 135)

the next term is:

f(3 + 1) = f(4) = (3/5)*f(3) = (3/5)*135 = 81

Then we have the pair (3, 81)

Then the correct option is the first one; On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 225), (3, 135), (4, 81).

9 0
2 years ago
Read 2 more answers
Can somebody help me out with the question
Evgen [1.6K]

Answer:

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
I will mark brainlyest plss helpp
lana [24]

Answer:

The answer is C

Step-by-step explanation:

i also use khan

5 0
2 years ago
Read 2 more answers
What is (3 + 12) - 3² + 8 · 2 ÷ 4 ?<br> (please show how/ show work)
lisov135 [29]

Answer:

10

Step-by-step explanation:

(3 + 12) - 3² + 8 · 2 ÷ 4

15 - 9 + 16 : 4

6 + 4

10

8 0
3 years ago
Other questions:
  • What is (3x9-6+3\10)
    12·1 answer
  • Which of the following is a unit rate?
    7·1 answer
  • If h is 36in, w is 28in, and A is 6112in to the second power, what is the length of the box
    7·1 answer
  • During the first two hours of a 4-h trip, the force of the wind causes a sailboat to travel 68 km. During the next two hours, th
    15·1 answer
  • Solve the two step equation. -3 + 10x = 7. show all steps
    14·1 answer
  • 37-(3×(5+2)-4) <br> please help
    15·1 answer
  • What is the slope of the line through (-7,-8) and (0, 4)
    8·1 answer
  • Find the equation of the straight line which passes through each of the following pairs of points.
    8·1 answer
  • The convex polygon below has 6 sides. Find the value of x.
    14·1 answer
  • The thermostat for a house is set to 70°F, but the actual temperature may vary by as much as 4°F. Use an
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!