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
Zarrin [17]
2 years ago
10

1. Mark practices the piano for 2/3 of an hour, 6 times a week. How many hours does

Mathematics
2 answers:
8090 [49]2 years ago
8 0
Answer: 4 hours each week

Explanation: 2/3 of an hour = 40 minutes
40 times 6 = 240 minutes
240 (minutes) / 6 (hours) = 4 hours practiced each week

Hope this helps :)
mel-nik [20]2 years ago
6 0

Answer:

4 hours

Step-by-step explanation:

2/3*6/1= 12/3

12/3 simplified is 4

You might be interested in
How many centimeters are in 3.2 inches? [1 inch = 2.5 cm]
frez [133]
2.54 cm = 1 inch

3.2 inches * 2.54 cm / inch =8.128 centimeters



7 0
3 years ago
an initial investment of $9000 grows at an annual interest rate of 5% compounded continuously. how long will it take to double t
tino4ka555 [31]

Answer:

20 years

Step-by-step explanation:

9000/ 100= 900 = 10%

900/2= 450

450 x 2= 900

900 x 10= 9000

Now we multiply 10 by 2 because we doubled the value of our 450 into a 900 and now we get 20.

8 0
3 years ago
The sum of the digits of a two-digit number is 9. If the digits are reversed,the new number is 9 more than the original number.F
hodyreva [135]

Answer:

45

Step-by-step explanation:

Let the original number be xy where y is unit and x is tens hence original number is 10x+y When reversed, the new number is yz hence 10y+x

We know that the original number plus 9 is the reversed number hence

10x+y+9=10y+x

9y-9x=9 which when simplified we obtain that

y-x=1 equation 1

Originally, we are told that the sum of x and y is 9 hence

y+x=9 equation 2

Solving equation 1, it means y=x+1

Substituting the above into equation 2

x+1+x=9

2x=9-1

2x=8

x=8/2=4

Since y=x+1 then y=4+1=5

Therefore, the original number, xy is 45

4 0
4 years ago
A population of amoebas measured at 14000 and grow at the rate of 11%
Dima020 [189]

Answer:

Calculating Growth Rates. The annual percentage growth rate is simply the percent growth divided by N, the number of years. ... The population of Lane County grew 12 percent between 1980 and 1990 or at an rate of 1.2 percent annually.

Step-by-step explanation:

7 0
3 years ago
Which statement about the ordered pairs ( - 9, 3 ) and ( 2, 4 ) is true for the equation.
gogolik [260]

Answer:

Neither

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • A circle has a center at Left-parenthesis 3 comma 5 right-parenthesis. The point Left-parenthesis 3 comma 8 right-parenthesis is
    7·1 answer
  • 40pts!<br> Find the value of X
    6·2 answers
  • Mark draws a card 50 times from a standard deck of 52 cards and gets a Heart 8 times. What is the experimental probability that
    9·2 answers
  • Simplify. Show your work.
    15·1 answer
  • A group of adults and students went on a class trip to Washington, DC. The number of male students was 1 more than 7 times the n
    8·1 answer
  • WILL GIVE BRAINLIEST *NO LINKS*
    13·1 answer
  • PLEASE HELP us the half angle formula for 7, 8 and 9(which is marked 8 on accident)
    11·1 answer
  • Please help me thanks
    15·1 answer
  • The average person American eats 49 pounds of french fries over 6 years. Which proportion could be used to determine how many po
    11·1 answer
  • Can someone please help me with math
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!