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zepelin [54]
3 years ago
6

As a member of a music you can order CDs for $14.99 each the music club also charges $4.99 for shipment the expression 14.99n+4.

99 represents the cost of n cds find the total cost for ordering three cds
Mathematics
1 answer:
aksik [14]3 years ago
5 0
14.99n+4.99 represents the cost of n cds
(14.99x3) + 4.99 =
34. 97 + 4.99= $39.97- 0.1= $39.96
3 CD s cost $39.96
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Which value of n makes the equation true?<br> 1/2(n+4)=6
mart [117]

Answer:

8

Step-by-step explanation:

1/2(12)=6

3 0
3 years ago
Read 2 more answers
In 2000, the circulation of a local newspaper was 3,250. In 2001, its circulation was 3,640. In 2002, the circulation was 4,100.
vodka [1.7K]

Percent increase from 2000 to 2001 is 12% and from 2001 to 2002 is 12.6%. Thus period of 2001 to 2002 has higher increase percentage.

<u>Solution:</u>

Given that,

Total circulation of local newspaper in 2000 = 3250

Total circulation of local newspaper in 2001 = 3640

Total circulation of local newspaper in 2002 = 4100

<em><u>Finding percent of increase in the newspaper’s circulation from 2000 to 2001:</u></em>

\text { Percent increase from } 2000 \text { to } 2001=\frac{\text { change in circulation from 2001 - 2000 }}{\text { circulation in } 2000} \times 100

\begin{array}{l}{=\frac{3640-3250}{3250} \times 100} \\\\ {=\frac{390}{3250} \times 100=12 \%}\end{array}

<em><u>Finding percent of increase in the newspaper’s circulation from 2001 to 2002:</u></em>

\begin{array}{l}{\text { Percent increase from } 2001 \text { to } 2002=\frac{\text { change in circulation }}{\text {circulation in } 2001} \times 100} \\\\ {=\frac{4100-3640}{3640} \times 100} \\\\ {=\frac{460}{3640} \times 100=12.6 \%}\end{array}

As we can see 12% < 12.6%

So period of 2001 to 2002 has higher increase percentage.

7 0
3 years ago
Can you please help me with this reverse percentage?
ratelena [41]

Answer:

39785

Step-by-step explanation:

or,40596×2÷100=811

or,40596-811=39785

7 0
3 years ago
PLEASE HELP TIMED TEST What is the value of x in the matrix equation below?
Ksivusya [100]

Answer:

x = 1

Step-by-step explanation:

Given the matrix;

-2\left[\begin{array}{ccc}x&-1\\3&5\end{array}\right] + \left[\begin{array}{ccc}3&8\\-1&6\end{array}\right] = \left[\begin{array}{ccc}x&10\\-7&-4\end{array}\right]

Converting to equations

From the first row of each matrices

-2x + 3 = x

Collect the like terms

-2x - x = -3

-3x = -3

x = -3/-3

x = 1

Hence the value of x is 1

7 0
3 years ago
Which expression is equal to 632?
kkurt [141]

Answer:

3. 2^{3} (3*5^{2}  + 2^{2} )

Step-by-step explanation:

I think your question missed key information, allow me to add in and hope it will fit the orginal one. Please have a look at the attached photo

My answer;

We use oder of operation to solve this question

We have BEDMAS, which means:

  • B - Brackets
  • E - Exponents
  • D - Division
  • M - Multiplication
  • A - Addition
  • S - Subtraction

In 4 answer, only answer is correct:

2^{3} (3*5^{2}  + 2^{2} )

= 2^{3} (3*25 +4)

= 2^{3} (79 + 4)

= 2^{3}*83

= 8*83

= 664

3 0
3 years ago
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