Answer:
20 + 10 = 30
Step-by-step explanation:
The sum of x and y is 30. In other words, x plus y equals 30 and can be written as equation A:
x + y = 30
The difference between x and y is 10. In other words, x minus y equals 10 and can be written as equation B:
x - y = 10
Now solve equation B for x to get the revised equation B:
x - y = 10
x = 10 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 30
10 + y + y = 30
10 + 2y = 30
2y = 20
y = 10
Now we know y is 10. Which means that we can substitute y for 10 in equation A and solve for x:
x + y = 30
x + 10 = 30
X = 20
Summary: The sum of two numbers is 30 and their difference is 10. What are the two numbers? Answer: 20 and 10 as proven here:
Sum: 20 + 10 = 30
Difference: 20 - 10 = 10
Answer:
95
Step-by-step explanation:
365x3=1095
2. The first term of a geometric sequence is -10,000 and the common ratio is -1/2. Find the 6th term.
3. The first term of a geometric sequence is 3/4 and the common ratio is 4. Find the 8th term.
Answer:
the last one
Step-by-step explanation:
For seven months it is less expensive to have a monthly membership.
When evaluating arithmetic expressions, the stack organization is extremely efficient. We employ a number of techniques, including PEMDAS, to simplify the issue. In addition to the value, the variables also need to be made easier.
Given, A full-year membership to a gym costs $325 upfront with no monthly charge. A monthly membership costs $100 upfront and $30 per month. For calculating the number of months is it less expensive to have a monthly membership we need to create an expression where the number of months will be variable. Hence,
100 + 30x < 325
subtract 100 on both sides
30x < 225
divide 30 into both sides
x < 225/30
x < 7.21
Therefore, it is less expensive to have a monthly membership if we take it for seven months.
Learn more about arithmetic expressions here:
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