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hjlf
3 years ago
10

Help with these questions

Mathematics
1 answer:
nata0808 [166]3 years ago
4 0
Explaintion is in a file
You might be interested in
A video game store allows customers to rent games for 4.75 each. Customers can also buy a membership for $54 annually, and video
ankoles [38]
Answer:

24 video games

Step-by-step explanation:

Let x represent number of video games.
We have been given that a video game store allows customers to rent games for $4.75 each. So the cost of renting x video games would be 4.75x.

We are also told that customers can also buys a membership for $54 annually, and video games would only cost $2.50 each. The cost of renting x video games after membership would be 2.50x + 54

To find the number of video-games that will cost same for both options, we will equate both expressions as:

4.75x = 2.50x + 54
4.75x - 2.50x = 2.50x - 2.50x + 54


Therefore, a customer would have rent 24 video games in a year in order for the two options to be equal.
3 0
3 years ago
Kelli spent 18 hours per week practicing for a gymnastics meet.She practiced for 35 weeks.How many hours did she practice in all
adell [148]
She practiced 630 hours in all because you multiply 18x35
5 0
3 years ago
Read 2 more answers
What is 824.653 rounded to hundredths place
iren2701 [21]

Answer:

824.65

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which conjunction or disjunction is equivalent to |t – 7| > 12?
Klio2033 [76]
|t-7| > 12\ \ \ \Leftrightarrow\ \ \ (t-7>12\ \ \ \ \ or\ \ \ \ \ -(t-7)>12)\ /\cdot (-1)\\\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ t-7>12\ \ \ \ \ or\ \ \ \ \ \ \ \ \ \ \ t-7
8 0
3 years ago
7. There are 12 singers auditioning for the school musical. In how many ways can the director choose first a lead singer and the
Finger [1]

Answer: The director can choose first a lead singer and then a stand-in for the lead singer in 132 ways.

Step-by-step explanation:

Given : The total number of singers auditioning for the school musical.= 12

The director wanted choose first a lead singer and then a stand-in for the lead singer.

We use Permutations here because order of selecting the singers matters.

The number of permutations of selecting r things out of n things = ^nP_r=\dfrac{n!}{(n-r)!}

Similarly , the number of ways to select 2 singers in an order from 12 singers

^{12}P_{2}{=\dfrac{12!}{(12-2)!}

=\dfrac{12\times11\times10!}{10!}=132

Hence, the director can choose first a lead singer and then a stand-in for the lead singer in 132 ways.

8 0
3 years ago
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