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
Katarina [22]
3 years ago
14

Maria practices the piano 5/6 of an hour every day how many hours does she practice in 4 days

Mathematics
2 answers:
Artemon [7]3 years ago
8 0

Answer:

she will have praticed 3 hours and 20 min

Step-by-step explanation:

Katarina [22]3 years ago
3 0

Answer:

20/6 or 3.33 or 3 1/3 or 3 hours and 20 mins

Step-by-step explanation:

5/6 * 4 = (5*4)/6 = 20/6

You might be interested in
A pharmacist has 30% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 6 lit
kkurt [141]

Answer:

4 liters of 60% solution; 2 liters of 30% solution

Step-by-step explanation:

I like to use a simple, but effective, tool for most mixture problems. It is a kind of "X" diagram as in the attachment.

The ratios of solution concentrations are 3:6:5, so I've used those numbers in the diagram. The constituent solutions are on the left; the desired mixture is in the middle, and the numbers on the other legs of the X are the differences along the diagonals: 6 - 5 = 1; 5 - 3 = 2. This tells you the ratio of 60% solution to 30% solution is 2 : 1.

These ratio units (2, 1) add to 3. We want 6 liters of mixture, so we need to multiply these ratio units by 2 liters to get the amounts of constituents needed. The result is 4 liters of 60% solution and 2 liters of 30% solution.

_____

If you're writing equations, it often works well to let the variable represent the quantity of the greatest contributor—the 60% solution. Let the volume of that (in liters) be represented by v. Then the total volume of iodine in the mixture is ...

... 0.60·v + 0.30·(6 -v) = 0.50·6

... 0.30v = 0.20·6 . . . . subtract 0.30·6, collect terms

... v = 6·(0.20/0.30) = 4 . . . . divide by the coefficient of v

4 liters of 60% solution are needed. The other 2 liters are 30% solution.

6 0
3 years ago
What is the absolute value of 8
levacccp [35]

Answer:

8

Step-by-step explanation

Because 8 is 8

4 0
3 years ago
QUESTION 3 Toyota provides an option of a sunroof and side airbag package for its Corolla model. This package costs $1400. Assum
Orlov [11]

Answer:

n=601

Step-by-step explanation:

Formula used:

n=z(\frac{\alpha }{2})^2\frac{p(1-p) }{E^2}

Solution:

n=z(\frac{\alpha }{2})^2\frac{p(1-p) }{E^2}

Where,

\frac{\alpha }{2}=0.025

As there is no previous estimate for p

Then, p=0.5

Here on using the table

z(\frac{\alpha }{2}) =1.959963985

Also,

E=0.04

p=0.5

Thus,

n=600.2279407

On approximating the value,

n=601

6 0
3 years ago
What is the slope of the line <br><br> A. 0<br> B. 1<br> C. -4<br> D. Undefined
ohaa [14]

Answer:

undefined slope

Step-by-step explanation:

The line is a vertical line

Vertical lines have an undefined slope

3 0
3 years ago
Read 2 more answers
Pls answer 13 b ill mark u brainlist
gladu [14]

Answer:

7 students

Step-by-step explanation:

1+2+4=7students

5 0
3 years ago
Other questions:
  • 7. Given the vertices of ∆ABC are A (2,-5), B (-4,6) and C (3,1), find the vertices following each of the transformations FROM T
    10·1 answer
  • Please can someone help
    11·2 answers
  • Whats 1 and 3 5ths times 2 and 3 4ths
    11·2 answers
  • What is equal to 7/12
    8·2 answers
  • Which statement is true about the local minimum of the graphed function
    9·2 answers
  • Find three consecutive odd integers such that the sum of the​ first, two times the second and three times the third is 82.
    9·2 answers
  • 31.5 x _____ = 464 2/4 HELPPPPPPPPPP ASAP
    5·1 answer
  • Plz answer mhanifa!
    13·1 answer
  • Can someone help me with this
    11·2 answers
  • Quadrilateral MNOP has vertices M(-3,4), N(-1,4), O(4,-5), P(2,-5). What is the approximate perimeter of the quadrilateral?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!