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
UkoKoshka [18]
3 years ago
9

HELP PLEASE Alonzo bought 3 CDs that were each the same price. Including sales tax, he paid a total of $36.90. Of that total, $3

6.60 was tax. What was the price of each CD before tax?
Mathematics
1 answer:
Sauron [17]3 years ago
7 0

Answer:

each cd was 1 cent

Step-by-step explanation:

You might be interested in
Find <img src="https://tex.z-dn.net/?f=a_%7B1%7D" id="TexFormula1" title="a_{1}" alt="a_{1}" align="absmiddle" class="latex-form
yKpoI14uk [10]

Answer:

\displaystyle  a_{1}    = 108

Step-by-step explanation:

we are given

the sum,common difference and nth term of a geometric sequence

we want to figure out the first term

recall geometric sequence

\displaystyle S_{ \text{n}} =  \frac{ a_{1}(1 -  {r}^{n} )}{1 - r}

we are given that

  • S_n=189
  • r=\dfrac{1}{2}
  • n=3

thus substitute:

\displaystyle 189=  \frac{ a_{1}(1 -  {( \frac{1}{2} )}^{3} )}{1 -  \frac{1}{2} }

to figure out a_1 we need to figure out the equation

simplify denominator:

\displaystyle  \frac{ a_{1}(1 -  {( \frac{1}{2} )}^{3} )}{ \dfrac{1}{2}  }  = 189

simplify square:

\displaystyle  \frac{ a_{1}(1 -  {( \frac{1}{8} )}^{} )}{ \dfrac{1}{2}  }  = 189

simplify substraction:

\displaystyle  \frac{ a_{1} (\frac{7}{8} )}{ \frac{1}{2}  }  = 189

simplify complex fraction:

\displaystyle   a_{1} (\frac{7}{8} ) \div { \frac{1}{2}  }  = 189

calculate reciprocal:

\displaystyle   a_{1} \frac{7}{8}   \times 2  = 189

reduce fraction:

\displaystyle   a_{1} \frac{7}{4}   \  = 189

multiply both sides by 4/7:

\displaystyle   a_{1} \frac{7}{4}  \times  \frac{4}{7}   \  = 189 \times  \frac{4}{7}

reduce fraction:

\displaystyle   a_{1}     = 27\times  4

simplify multiplication:

\displaystyle  a_{1}    = 108

hence,

\displaystyle  a_{1}    = 108

4 0
3 years ago
Daves first three test scores in algebra were 84%, 88%, and 90%. what does he need to earn on the next test so that his average
defon

Answer:

C gives you 90.2

Step-by-step explanation:

84+88+90+100=362

362/4=90.2

8 0
3 years ago
Comet cable charges $32.50 a month for basic cable television. Each premium channel selected costs an additional $4.50 per month
Alex_Xolod [135]
32.50+4.50x


You are going to pay $32.50 no matter what, that is what you pay for basic cable. $4.50 is what you pay for the extras, so depending on how many premium channels you want, you will pay $4.50 for every extra channel, which is why it is 4.50x because the x is how many premium channels you purchase that month. 

7 0
3 years ago
Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
borishaifa [10]

Answer:

is it 7?

Step-by-step explanation:

8 0
3 years ago
The sum of twice a number and 4 is 12.
navik [9.2K]
The answer is three because 4×3 = 12
8 0
3 years ago
Read 2 more answers
Other questions:
  • Multiply: 4/17 x − 3 /4 need help
    11·1 answer
  • Write 0.16666 as a fraction
    6·2 answers
  • How many kg equals 10.5 g??
    12·1 answer
  • Cual es la. Longitud de un lápiz 2
    14·1 answer
  • Please help, I do not know how to do this!
    12·2 answers
  • A ball is thrown from an initial height of 4 feet with an initial upward velocity of 30 feet per second.
    7·1 answer
  • The Empire State Building in New York City is 1,454 feet tall. The observatory on the 86th floor is 404 feet from the top of the
    10·1 answer
  • Find the product and simplify.<br> (k⁵) (7k)
    5·1 answer
  • I nEED Help trying to get a B in math do it for me PLZZZZZZZZZZZZZZZZZZZZZ
    9·1 answer
  • BD is the perpendicular bisector of AC. What is the perimeter of AABC?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!