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
Naddik [55]
3 years ago
13

Juan and Nina are in the Junior High Orchestra. As part of the orchestra they each have to learn two instruments. Juan is learni

ng to play the violin and the cello. For every 3 hours that Juan spends practicing the violin he practices the cello for 2.5 hours. Nina is learning to play the viola and cello. For every 3 hours Nina spends practicing the viola she practices the cello for 2 hours.
If Juan practiced the violin for 9 hours last week and Juan and Nina practiced the cello for the same amount of time, then Nina practiced the viola for hours last week.
Mathematics
1 answer:
Whitepunk [10]3 years ago
3 0

Answer:

Nina practiced the viola for 11.25 hours last week.

Step-by-step explanation:

Juan practiced the violin for 9 hours last week. For each 3 hours that he practices the violin, he practices 2.5 hours of cello. So

3h violin - 2.5h cello

9h violin - xh cello

3x = 9*2.5

x = 7.5

He practiced 7.5 hours of cello, the same as Nina.

For every 3 hours Nina spends practicing the viola she practices the cello for 2 hours. So:

3h viola - 2h cello

xh viola - 7.5h cello

2x = 3*7.5

x = 7.5*1.5

x = 11.25

Nina practiced the viola for 11.25 hours last week.

You might be interested in
Can someone help me please ?? :)
ki77a [65]
The answer would be 1/8 because when 1/8 is divide into the endpoints of AB you will recieve 1/8 of the endpoint numbers. Like 1/8 of 4 would be written as 1/8 times 4/1 since its a fraction multiply 1 times 4 and 8 times 1 to get 4/8. 4 goes into 4 one time and into 8 2 times giving you 1/2. Hope this helped. If you ever need help with math use this calculator and bookmark it so you can have it when you need it https://www.symbolab.com/
8 0
3 years ago
Read 2 more answers
There are more inches on a football field (100 yards) than there are centimeters on a 28 meter basketball court.
ivanzaharov [21]

Answer:

True

Step-by-step explanation:

On a football field there are 4,320 inches

On a basketball court there are 2,865 centemeters

3 0
3 years ago
if the temperature at 9:00 pm was 12 degrees farenheit,and after 6 hours the temperature dropped to 6 degrees Fahrenheit below 0
Delvig [45]
The rate of change is it drops 3 degrees every hour.
my work :12-(3×6)=-6
9:00 = 12 degrees 10:00 = 9 degress. 11:00 = 6 degress. 12:00 = 3 degress 1:00 = 0 degress. 2:00 = -3 degress 3:00 = -6 degress
Hope this helps if so mark as brainliest
6 0
2 years ago
A cube is packed with decorative pebbles. If the cube has a side length of 2 inches, and each pebble weighs on average 0.5 lb pe
kow [346]

We can solve this problem by first solving for the total volume of the cube. The formula for volume of cube is given as:

V cube = s^3

Where s is the length of one side which is equivalent to 2 inches. Therefore:

V cube = (2 inches)^3

V cube = 8 cubic inch

 

Assuming that all the pebble fills the cube without any spaces, then the total weight of the pebbles in the cube would simply be:

Total weight = 0.5 lb per cubic inch * 8 cubic inch

Total weight = 4 lb

 

Therefore, the total weight of the pebbles in the cube is <u>4 lbs</u>.

5 0
3 years ago
Please help im on a test!!! Brainiest will be marked!!!
laila [671]

Answer:

answer is in the sbs explanation

Step-by-step explanation:

1.5625

4 0
2 years ago
Read 2 more answers
Other questions:
  • Liam says - G) is equivalent to Explain if Liam is correct by completing the
    11·1 answer
  • Is the z score corresponding to a number or score below the mean always negative?
    13·1 answer
  • George is buying a 425,600 home? How much is he financing if he putting 25% down payment
    5·1 answer
  • 7/5 squared times blank equals 1
    5·1 answer
  • Find the nth derivative of (sin x)^3
    13·1 answer
  • One telephone company charges $16.95 per month and $0.05 per minute for local calls. Another company charges $22.95 per month an
    11·2 answers
  • The figure below shows ∠ABC formed by the hands of the clock at 4 o’clock. What is the measure of ∠ABC?
    12·1 answer
  • A nursery owner buys 5 panes of glass to fix some damage to fix some damage to his greenhouse. The 5 panes cost ​$11.75. ​Unfort
    13·2 answers
  • The equation a/5=bc represents a(n) ______ variation.
    10·1 answer
  • 123456789+32145688977
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!