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satela [25.4K]
3 years ago
5

An amusement park charges $7 more for an adult's admission than for a child's admission. If a group of 4 adults and 3 children s

pent $119 on admission, what is the price of admission for one child?
Mathematics
1 answer:
nevsk [136]3 years ago
6 0

Answer:

each child would cost $13

Step-by-step explanation:

7x4=28 (4 adults at $7 more)

(4x+28)+3x=119

7x+28=119

    -28  -28

7x=91

/7   /7

x=13

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dlinn [17]
The first one is correct
\frac{ {5}^{4} }{25}  =  \frac{ {5}^{4} }{ {5}^{2} }  =  {5}^{2}

8 0
3 years ago
How many ways can three different numbers be selected from 10 numbers to open a keypad lock?
Paraphin [41]

There are 720 ways through which 3 numbers can be selected from 10 numbers to open a keypad lock.

Given that there are 10 numbers are 3 numbers are required to open a keypad lock.

Permutations are the number of ways in which objects can be selected without replacements to form subsets.

It is expressed as nP_{r}=n!/(n-r)!.

Factorial of a number is the product of consecutive numbers less than the number.

Total numbers available=10

Numbers to be selected=3

Number of ways can be found by using permutations.

Number of ways =10P_{3}

=10!/(10-3)!

=10!/7!

=10*9*8*7!/7!

=10*9*8

=720 ways.

Hence there are 720 ways through which 3 numbers can be selected from 10 numbers.

Learn more about permutations at brainly.com/question/1216161

#SPJ1

6 0
2 years ago
Jason's current yearly income is $13,000...If Jason’s training will allow him to get a job making $34,000 a year, how long will
photoshop1234 [79]
Answer: It will take him 1.68 years to recover his initial investment.

First, find the amount of extra money that he will make.
34,000 - 13,000 = 21,000
He will be making an extra 21,000 per year.

Now, divide the cost of his training by the amount of his increase.
35200 / 21000 = 1.68

That gives you the amount of years it will take him to pay off his investment.
6 0
3 years ago
How many solutions are there to the equation below?
Studentka2010 [4]
No solution

3x+5+4x=7x+9
7x+5=7x+9
-7x -7x

you’re left with no x.. so no solution
6 0
2 years ago
There are 100 apartments in Brenna's building. The number of apartments per floor is equal to 4 times the number of floors in th
My name is Ann [436]

Answer:

Step-by-step explanation:

Let the number of floors  = x

Number of apartments per floor = 4x

4x *x = 100

4x² = 100

x² = 100/4

x² = 25

x =√25

x = 5

Number of apartments on each floor = 4*5 = 20

7 0
3 years ago
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