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
maxonik [38]
3 years ago
11

Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of n

ineteen and a half hours. If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0
She has to rehearse at least 2 hours a day
You might be interested in
PLEASE HELP ME ILL GIVE BRAINLIEST
Sever21 [200]

Answer:

lol sorry

Step-by-step explanation:

5 0
2 years ago
What's the present value of $9,500 discounted back 5 years if the appropriate interest rate is 4.5%, compounded semiannually?
nasty-shy [4]

Answer:

$427.50

Step-by-step explanation:

I think this is the answer because 4.5 percent of $9,500 is $427.50

4 0
3 years ago
What is 7 + 8(2r - 9)​
Shalnov [3]

7 + 8(2r - 9)​

mutiply the bracket by 8

(8)(2r)= 16r

(8)(-9)= -72

7+16r-72

7-72+16r ( rearranging)

answer:

-65+16r or 16r-65

4 0
3 years ago
Read 2 more answers
Let P = 0.50.30.50.7 be the transition matrix for a Markov chain with two states. Let x0 = 0.50.5 be the initial state vector fo
pav-90 [236]

Answer:

Probability distribution vector = \left(\begin{array}{c}0.375\\ 0.625 \end{array} \right)

Step-By-Step Explanation

If P=\left(\begin{array}{cc}0.5&0.3\\ 0.5&0.7 \end{array} \right)  is the transition matrix for a Markov chain with two states.  

x_{0}=\left(\begin{array}{c}0.5\\ 0.5 \end{array} \right)  be the initial state vector for the population.

X_{1}=P x_{0}=\left(\begin{array}{cc}0.5&0.3\\ 0.5&0.7 \end{array} \right) \left(\begin{array}{c}0.5\\ 0.5 \end{array} \right) =\left(\begin{array}{c}0.4\\ 0.6 \end{array} \right)  

X_{2}=P^{2} x_{0}=\left(\begin{array}{c}0.38\\ 0.62 \end{array} \right)  

X_{3}=P^{3} x_{0}=\left(\begin{array}{c}0.38\\ 0.62 \end{array} \right)  

X_{30}=P^{30} x_{0}=\left(\begin{array}{c}0.37499\\ 0.625 \end{array} \right)  

In the long run, the probability distribution vector Xm approaches the probability distribution vector \left(\begin{array}{c}0.375\\ 0.625 \end{array} \right) .

This is called the steady-state (or limiting,) distribution vector.

4 0
3 years ago
Write a basic counting principle problem that has an answer of 24 choices. You write the word problem
alekssr [168]

Answer:

Step-by-step explanation:

Lunch has 3 choices for the main dish, chicken, taco, or hamburger, 2 choices for side dish, fries or salad, and 4 choices for beverage, milk, chocolate milk, juice, or water. How many lunches are possible?

8 0
2 years ago
Other questions:
  • What is the volume? Please answer asap.
    12·1 answer
  • A total of 6 family members will appear in a portrait. if 2 of the family members may sit in the front row how many combinations
    5·2 answers
  • Larry says the 9 in 198,550 is 10 times greater than 9 in 4,931 agree or disagree ... how am I supposed to help figure that out
    12·1 answer
  • Solve x^2=121 please solve this quickly
    5·1 answer
  • What is the total area of this composite figure rounded to the nearest hundredth?
    9·1 answer
  • How to solve exterior angles
    12·1 answer
  • Simplify the number. (-32)^6/5
    9·2 answers
  • In the xy-coordinate plane shown below, point P has coordinates (8,-6). Which
    11·1 answer
  • It takes a crew 57 hours to install cabinets in one office. How long will it take the crew to install cabinets in 17 offices?
    7·2 answers
  • -9+(-14)=??<br><br> please help!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!