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
Kruka [31]
3 years ago
14

1.9r+0.1r=0.6 what s the value of r

Mathematics
1 answer:
Wittaler [7]3 years ago
4 0
0.3. Add 1.9 and 0.1 which equals 2r. Then divide two by both sides and you get 0.3.
You might be interested in
If the diameter of the above cylinder is 8" , what is the radius
den301095 [7]
It would be 4" my good friend
3 0
3 years ago
Read 2 more answers
At a country concert, the ratio of number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many
Juliette [100K]

Answer:

100 boys at the concert

Step-by-step explanation:

When changing the ratio between the number of boys to the number of girls, it always has to be equivalent to the original ratio 2:7

So, convert the ratio 2:7 to a different ratio, but it still has to be equivalent to the ratio 2:7. By doing that, multiply both sides of the 2:7 ratio by 50:

  2   :   7

×50   ×50

To get:

100:350  ⇒  This ratio means that the ratio between the number of boys to the number of girls is now 100:350, but that’s okay to have because it’s still equivalent to the original 2:7 ratio.

So, using the new ratio 100:350, this means that there are 100 boys at the concert and 350 girls at the concert, and 350 is 250 more than 100 which proves what the question is asking. So there are 100 boys at the concert.

<u>Answer:</u> 100 boys at the concert

<em>I hope you understand and that this helps with your question! </em>:)

7 0
3 years ago
Select the equation that contains the points (-1, 8) and (3, 4)
bezimeni [28]
None of above.The answer is a line with this form:y - 4= - 1 (x - 3)
8 0
3 years ago
A student earns an 80% on their science test. If she got 20 questions correct, how many total were on the test?
galina1969 [7]
25 questions
Explanation: 20 divided by 25 is .8 which is 80%
5 0
3 years ago
Please help thank you
Shkiper50 [21]

Answer:

x = 0.25

Step-by-step explanation:

When logs are added together, they are actually multiplied and then the logs taken of the product.

That sentence is actually correct, but you are going to have to read it a couple of times. You might understand it if I actually just solve the problem.

ln(2x) + ln(2) = 0              Combine the two subjects to make 1 ln.

ln (2)(2x) = 0                    Now take the antilog

ln(4x) = 0

antilog ln(4x) = e^0         e^0 = 1

4x = 1                                See your last problem.

x = 1/4

Now the question is "What's the answer?" It might be 1/4 but I doubt it. A better choice would be x = 1/4 or x = 0.25

I'd try the last one first.

6 0
3 years ago
Other questions:
  • Please help. Will choose brainiest.
    6·1 answer
  • |43|-|-20| what is the answer
    7·2 answers
  • What is 3 divided by .075
    15·2 answers
  • Which polygons can be mapped onto each other by similarity transformations?
    6·2 answers
  • How does the value of the digit 4 in 3.546 compare to the value of the digit 4 in 4.23
    9·1 answer
  • Approximately 59% of films are rated R. if 930 films were recently rated, how many were rated R?
    14·2 answers
  • Evaluate m^2+mtp if m=3 , t=4, and p=7
    11·2 answers
  • 50 POINTS
    10·2 answers
  • doug had 2000 baseball cards. he wants at least "y" cards in his collection by the time he graduates. he buys 25 baseball cards
    12·1 answer
  • If submarine A is submerged at 13.5 feet below sea level and submarine B is submerged at 5 feet below sea level, which submarine
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!