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
Crazy boy [7]
3 years ago
13

How many gallons of a 50% antifreeze solution must be mixed with 70 gallons of 30% antifreeze to get a mixture that is 40% antif

reeze?
Mathematics
1 answer:
Colt1911 [192]3 years ago
5 0

Answer:

70 gallons

Step-by-step explanation:

x gallon of 50%

x * 0.5 + 70 * 0.3 = (x + 70) * 0.4

0.5x + 21 = 0.4x + 28

0.1x = 7

x = 70

You might be interested in
forty percent of participants in a math contest were boys. fifty percent of the boys revived medals. the number of boys who rece
aleksklad [387]

20% of the participants are girls and got a medal, and 33% of the girls got a medal.

<h3>What percent of the participants were girls who received medal?​</h3>

First, we know that 40% of the participants were boys, so the other 60% were girls.

We know that 50% of the boys got a medal, so the percentage (in decimal form) of participants that are boys and got a medal is:

P = (0.4)*(0.5) = 0.2

So, 20% of the participants are boys and got a medal.

We know that the number of girls that got a medal is the same as the number of boys, then we also have that 20% of the participants are women who got a medal.

Then if the percentage of girls that got a medal is x (in decimal form), we must have that:

Q = (0.6)*(x) = 0.2

      x = 0.2/0.6 = 0.33

x = 0.33

This means that 33% of the girls got a medal.

If you want to learn more about percentages:

brainly.com/question/843074

#SPJ1

3 0
1 year ago
2 = x-3, then x equals
spayn [35]

Answer:

x = 5

Step-by-step explanation:

2 = x-3

<em>Adding 3 to both sides</em>

2+3 = x

5 = x

<u><em>OR </em></u>

x = 5

4 0
3 years ago
Read 2 more answers
Find the perimeter of a rectangle length 6yd. 2ft width 4yd 18inches?
Talja [164]
67 feet or 22 yards 1 foot
3 0
2 years ago
Please help!!!! please help!!!!!​
Nata [24]
[True]

Natural numbers are the positive integers (whole numbers) such as 1, 2, 3, and etc. So it is true that zero is less than every natural number.

[Hundreds]

The 8 in 30,846 is in the hundreds place because the 8 stands for 800.
6 0
2 years ago
Read 2 more answers
Find the volume of the cone.
8_murik_8 [283]

Answer:

V=471\ \text{units}^3

Step-by-step explanation:

Given that,

Radius of the cone, r = 5 units

Height of the cone, h = 6 units

We need to find the volume of the cone. The formula for the volume of the cone is given by :

V=\pi r^2 h

Substitute all the values,

V=3.14\times 5^2\times 6\\\\V=471\ \text{units}^3

So, the volume of the cone is 471\ \text{units}^3.

4 0
2 years ago
Other questions:
  • Find S25 for (-7) + (-2) + 3 + 8 +...
    6·1 answer
  • Can you tell me the answer of this?
    10·2 answers
  • What fraction of 1 litre is 10 millilitres
    11·1 answer
  • What is 15 x minus 3 y = 0 written in slope-intercept form? y = 5x y = negative 5 x x = one-fifth y x = 5 y
    14·1 answer
  • What is the value of Arctan1? a.π b.4π c.π/4 d.4
    8·2 answers
  • ♥|| Please help me A.S.A.P i will make you brainliest!||♥
    10·2 answers
  • 3.3^(2x+1)-103^x+1=0 need value of x
    15·1 answer
  • 8 7/12 into a improper fraction
    10·2 answers
  • How do you write 533,000, 327.5, and 0.0034 in scientific notation
    11·2 answers
  • Help Please Asapppppp​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!