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
horsena [70]
3 years ago
5

Between 1965 and 1980, the world population grew at an annual rate of 2%. Using the rule of 72, population is expected to double

in
Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0

Answer:

The population is expected to double in 36 years

Step-by-step explanation:

According to the the rule of 72,

A value is doubled if the product of the annual rate and number of years is 72,

Given,

The annual rate of interest = 2%

Let x be the time in years after 1965,

By the above statement,

The population will double if,

x × 2 = 72 ⇒ x = 36

Hence, the after 36 years since 1965 the population will be doubled,

i.e in 2001.   ( ∵ 36 years after 1965 )

You might be interested in
Bayview middle school wants to change their schools mascot. they came up with 5 mascot names and surveyed a group of random stud
Rasek [7]

Answer:

20%

Step-by-step explanation:

First step is counting all of the people up, I came up with 60. Then we have to construct our equation(12/60). Then you multiply it by 100. What you get is the percentage, 120/6 is 20. So the answer is 20%.

7 0
3 years ago
Divide 63.5 ÷ 0.25 round the quotient to the nearest ten-thousandth
hram777 [196]

Answer:

254

Step-by-step explanation:

63.5 ÷ 0.25 =

= 63.5 ÷ 1/4

= 63.5 × 4

= 254

Answer: 254.

8 0
3 years ago
Find the median<br> of 38,37,39,41,38,42,48,50,54
zhuklara [117]
Median = 41

hope that helps
8 0
3 years ago
You practice your basketball shots every day. On Friday you made 20 shots. On Saturday you made 16 shots. What is the percent de
STatiana [176]
So,

All you have to do to find the percent decrease is to subtract your score on Saturday from your score on Friday and divide the result by your score on Friday.  If you let "f" represent your score on Friday and let "s" represent your score on Saturday, you can re-write this mathematically:

\frac{f - s}{f} = percent\ decrease

Substitute.
\frac{20 - 16}{20} = percent\ decrease
\frac{4}{20} \ or\  \frac{1}{5}\ or\ twenty\ percent = percent\ decrease

The percent decrease in shots you made was 20%.  That would be option C.
8 0
3 years ago
Read 2 more answers
Oof this is probably really simple to most of y'all but I'm out of it.
Lelechka [254]

Answers:

  • angle1 = 156 degrees
  • angle2 = 24 degrees

=======================================================

Explanation:

The two angles form a straight line, which is 180 degrees

Add up the angle expressions and set the sum equal to 180.

(angle1) + (angle2) = 180

(4x) + (x-15) = 180

(4x+x)-15 = 180

5x-15 = 180

5x = 180+15

5x = 195

x = 195/5

x = 39

We use that x value to find each missing angle

  • angle1 = 4x = 4*39 = 156 degrees
  • angle2 = x-15 = 39-15 = 24 degrees

Then notice how angle1+angle2 = 156+24 = 180 to verify the answer.

Side note: Angles that add to 180 are considered supplementary.

6 0
2 years ago
Other questions:
  • Amie published her first book. She was given $20,000 and an additional $0.15 for each copy that sold. Her earnings,d, in dollars
    6·2 answers
  • Solve the equation: 1/2x^2 + x when x = 4
    8·1 answer
  • What could cause the graph to be misleading?
    11·1 answer
  • (1.5×<br> 10<br> −7<br> )×(3.6×<br> 10<br> 15<br> )÷(1.2×<br> 10<br> −3<br> )=
    15·1 answer
  • Math help!! Answers to 7,8,9?
    15·1 answer
  • Find the measure of the bolded arc. Round to the nearest hundreth.
    6·1 answer
  • Please help me im giving out 15 points and 30 if i give brainliest please help me it is due soon
    11·1 answer
  • Select all expressions that have a
    11·1 answer
  • Graph the relation y=2x
    12·1 answer
  • Determine the number of solution pairs in the equation.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!