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
matrenka [14]
3 years ago
11

How many liters of a 20% alcohol solution must be mixed with 60 liters of a 90% solution to get a 30% solution?

Mathematics
1 answer:
Alex17521 [72]3 years ago
7 0
You would need to add 360L of the 20% ethanol solution. 
You might be interested in
Factor completely, the expression: 2x^3-2x^2-12x
muminat
2x^3-2x^2-12x=2x(x^2-x-6)=(*)\\\\------------------------------\\x^2-x-6\\\\a=1;\ b=-1;\ c=-6\\\\\Delta=(-1)^2-4\cdot1\cdot(-6)=1+24=25\\\\\sqrt\Delta=\sqrt{25}=5\\\\x_1=\frac{1-5}{2\cdot1}=\frac{-4}{2}=-2;\ x_2=\frac{1+5}{2\cdot1}=\frac{6}{2}=3\\\\x^2-x-6=(x+2)(x-3)\\\\------------------------------\\\\(*)=2x(x+2)(x-3)
8 0
3 years ago
Please help me with this/ will give brainlist
nalin [4]

Answer:

102 degrees bc it is vertical angle means there's same degree

6 0
2 years ago
Read 2 more answers
7 out of 11 people brought umbrellas. there were 99 people there. How many people did not have one
Eduardwww [97]

36. If 7/11 did bring one, then 4/11 didn't. 4*9=36

7 0
3 years ago
What is the quotient in the polynomial form?
Oxana [17]

First step of a synthetic divison is that we need to carry down the leading coefficient. Here the leading coefficient is 2. So, carry down 2 at the bottom.

Next step is to multiply the divisor -3 with this carry down number 2. So, we have got 3*(-2)= -6 which will place atthe bottom of the next coefficient 4.

Next step is to add this column.

Now repeat the same method again till the last colum.

At the end we have got 0 after the addition. Which means the remainder is 0.

So, the quotient is 2x^2-2x+2.

8 0
3 years ago
Write the equation in slope-intercept form.<br> 5x +<br> 5y = 35
vekshin1

Answer:

y = -x + 7

General Formulas and Concepts:

<u>Pre-Algebra</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

[Standard Form]   5x + 5y = 35

<u>Step 2: Rewrite</u>

<em>Find slope-intercept form.</em>

  1. Subtract 5x on both sides:                    5y = -5x + 35
  2. Divide 5 on both sides:                         y = -x + 7
4 0
3 years ago
Other questions:
  • Reza and James have started exercising together. When they started, Reza weighed 185 pounds and James weighed 180. After 10 week
    15·1 answer
  • Find all the possible values of b such that 3x^2 + bx -2 can be factored
    9·1 answer
  • Is the point (2,14) a solution of the equation y = 5x - 3?
    12·1 answer
  • What what is the date of the snow on Cherry Street after three hours?
    5·1 answer
  • Haley buys 9 pounds of apples for $3. How many pounds of apples can she buy for $1?
    8·1 answer
  • The top teams speed for each leg is 56.81, 59.22, 57.39 and 60.11. whats the best time
    15·1 answer
  • (0 is θ)
    8·1 answer
  • A certain sum of money gives $ 510 as compound interest 12¹/₂ % per annum for 2 years. Find the simple interest on the same sum
    11·1 answer
  • HELP WORTH 50 points
    13·1 answer
  • Explain how to divide when the divisor is a decimal.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!