a standard toilet uses 1.6 gallons per flush. If a toilet is flushed four times per day, how much water will be used in a month(
2 answers:
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Question is Incomplete;
Complete question is given below;
Tracy had a total of $200 to spend while shopping. She has already spent $122 on clothes. She wants to buy some video games that are on sale for $20 each, including tax. Enter the maximum number of video games Tracy can buy with the remaining money.
Answer:
Tracy can buy maximum of 3 video games with the remaining money.
Step-by-step explanation:
Given:
Total money to spend on shopping = $200
Money spend on clothes = $122
Cost of each video game = $20
We need to find the number of Video games she could buy.
Solution:
Let the number of video games be 'x'.
So we can say that;
Money spend on clothes plus Cost of each video game multiplied by number of Video games should be less than or equal to Total money to spend on shopping.
framing in equation form we get;
Now by subtraction property of Inequality we will subtract both side by 122 we get;
Now dividing both side by 20 using division property of inequality we get;
Hence Tracy can buy maximum of 3 video games with the remaining money.
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 n=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 =10
=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
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