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
exis [7]
3 years ago
11

A music store buys instruments and then sells them for 30% more than they paid.

Mathematics
1 answer:
IgorC [24]3 years ago
5 0
Bye doing the pemdas equation the at 3x + -5 you get the answer
You might be interested in
A multiple-choice test contains 10 questions. There are four possible answers for each question. a) In how many ways can a stude
AnnZ [28]

Answer :

<h3>4^{10} <u> =1048576 ways </u> a student can answer the questions on the test if the student answers every question.</h3>

Step-by-step explanation:

Given that a multiple-choice test contains 10 questions and there are 4 possible answers for each question.

∴ Answers=4 options for each question.

<h3>To find how many ways  a student can answer the given questions on the test if the student answers every question :</h3>

Solving this by product rule

Product rule :

<u>If one event can occur in m ways and a second event occur in n ways, the number of ways of two events can occur in sequence is then m.n</u>

From the given the event of choosing the answer of each question having 4 options is given by

The 1st event of picking the answer of the 1st question=4 ,

2nd event of picking the answer of the 2nd question=4 ,

3rd event of picking the answer of the 3rd question=4

,....,

10th event of picking the answer of the 10th question=4.

It can be written as  by using the product rule

=4.4.4.4.4.4.4.4.4.4

=4^{10}

=1048576

<h3>∴ there are 1048576 ways a student can answer the questions on the test if the student answers every question.</h3>
3 0
3 years ago
Molly opened a savings account with a one‐time deposit of $100 that will be left in the account for at least 5 years. The saving
Anettt [7]

The amount of interest Molly will earn after 5 years on a deposit of \$100 compounded annually over 5 years is \$27.63

First, we need to find the future value of her investment, then we subtract the original deposit from it to get the amount of interest she will get at the end of 5 years.

The future value of an investment that is compounded annually is given by

A=P(1+r)^t

where

A=\text{Amount of money in Molly's account after 5 years}\\P=\text{Molly's initial deposit into her account}=\$500\\r=\text{The annual interest rate as a decimal}=0.05\\t=\text{The time the money is invested (in years)}=5

Substituting the available values into the formula and solving

A=100(1+0.05)^5=100(1.05)^5 \approx \$ 127.63

The interest Molly will earn after 5 years is

A-P=\$127.63-\$100=\$27.63

Therefore, the amount of interest Molly will earn after 5 years on a deposit of \$100 compounded annually over 5 years is \$27.63

Learn more about compound interest here: brainly.com/question/21270833

8 0
3 years ago
What is 0 times anything?? (I'm asking this so you can answer it and get points, you're welcome)
hodyreva [135]
0 is the answer for the wuedtion
6 0
3 years ago
Read 2 more answers
By what percent must we decrease the number A to obtain the number 4A/5?
Schach [20]

\bf \cfrac{4A}{5}\implies \cfrac{4}{5}\cdot A\impliedby \textit{A is being reduced to four fifths} \\\\\\ \stackrel{\textit{let's convert four fifths to percentage}}{\cfrac{4}{5}\cdot 100\implies \cfrac{400}{5}\implies 80}


so 4/5 of A is really 80% of A then.

since a whole A is 100% of A, 100% - 80% = 20%, A is being reduced by 20%, namely 1/5.

8 0
3 years ago
If Z is the midpoint of RT, what are x, RZ, and RT?
oksian1 [2.3K]
Option C is the answer to your question!!!

7 0
3 years ago
Read 2 more answers
Other questions:
  • Length is the measurement of _______ between two points
    5·1 answer
  • A sail is in the form of a right triangle that is four times as high as it is wide.The sail is made from 32 square meters of mat
    13·1 answer
  • 1)simplify square root of 8<br>​
    11·1 answer
  • A bag contains 7 marbles: one each of red, orange, yellow, green, blue, violet, and white. a child randomly pulls 4 marbles from
    13·1 answer
  • Classify the triangle as equilateral, isosceles, or scalene​
    5·2 answers
  • 5 to the 2th power minus negative 3 to the 2to power
    7·1 answer
  • Complete the solution of the equation. Find the value of y when x equals -8. -5x - 5y =50
    6·1 answer
  • If I have more 15 Pokemon cards than Austin, which expression shows how many |<br>have?​
    12·1 answer
  • What are the ordered pairs of the solution?<br>2y+6&lt;8x<br>​
    8·1 answer
  • The area of the poster is (x^2+2x-15) inches the width is (x-3) inches calculate the dimensions of the poster board when x=14
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!