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
Aleksandr [31]
4 years ago
7

Convert 0.2777777... into a fraction

Mathematics
1 answer:
erastovalidia [21]4 years ago
6 0
0.27777...=25/90=5/18
You might be interested in
Light travels at 3.0 x 108 km/s. How far does light travel in 5 minutes? A) 1.5 x 1010 km B) 1.5 x 1011 km C) 9.0 x 109 km D) 9.
MaRussiya [10]
<span>D) 9.0 x 10^10 km This is more an exercise in handling scientific notation than anything else. Since we have the distance that light travels in 1 second and we want to calculate how far it travels in 5 minutes, we must first calculate how many seconds are in 5 minutes. Simply multiplying 5 by 60 gives us 300 seconds. Now we need to multiply 300 by 3.0x10^8 km. So 300 * 3.0x10^8 = ? We could first convert 300 into scientific notion, but it's easier to just leave it along and assume that it's 300 x 10^0. So 300 times 3 is 900. And since 0 plus 8 is 8, we have as the answer: 900 x 10^8 But we're not done. The significand has to be greater than or equal to 1 and less than 10. So let's divide 900 by 100 and add 2 to the exponent. So we get 9 x 10^10 Finally, since our data had 2 significant figures, our result should have that as well. So let's add the 2nd digit getting: 9.0 x 10^10 So we know that light travels 9.0x10^10 km in 5 minutes, and that answer matches option "D" from the available choices.</span>
4 0
3 years ago
Calcium-41 is being used in studies testing the effectiveness of drugs for preventing osteoporosis. The half-life of calcium-41
Leviafan [203]

Answer:

332,193 years

Step-by-step explanation:

From the question above, we are to calculate the time in an half life question, hence, the formula is given as

t = In(Nt/No) ÷ -(In2/t½)

Where

t = time is takes for an substance to decay or reduce

Nt = Amount of sample after time = 2g

No = Initial amount of sample = 20g

t½ = Half life = 100,000 years

Hence,

t = In(2/20) ÷ (In 2/ 100,000)

t = 332192.80948874 years

Approximately = 332,193 years

7 0
3 years ago
Help me with this thank you
alexgriva [62]
(-36x^4y+144x²y^6) / (-4x²y) = 
36xy*(x³+4xy^5) / (-4x²y) = 
-9*(x³+4xy^5) / x
7 0
3 years ago
53x52 step by step plzzz
Zigmanuir [339]

Answer: here you go i tried my best

Step-by-step explanation:

3 0
3 years ago
The perpendicular line of x-6y=2, (2, 4) in slope intercept form
pentagon [3]
The perpendicular line to x-6y=2, and passing through (2, 4) is y=-6x+16
3 0
3 years ago
Other questions:
  • The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing when the diameter is 100 mm?
    8·1 answer
  • Please help me to figure out this question. Thanks
    13·1 answer
  • Which statement is true?
    13·2 answers
  • PLEASE HELP 30 POINTS ! !
    13·2 answers
  • What percent if 6 is 1.2
    15·2 answers
  • Assume that random guesses are made for eight multiple choice questions on an SAT test so that there are n =8 trials ,each with
    6·1 answer
  • 80 grams of medicine increased by 15% how many grams
    8·1 answer
  • Which inequality is true? QUICK WHOEVER GETS IT GETS BRAINLIES or however you spell it
    9·1 answer
  • Solve problems <br>8 1/3× 3/5​
    8·1 answer
  • How to figure out amplitude
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!