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
V = height x cross section area
CSA = 6 x 5.5 = 33
Height of sand = 148.5 / 33 = 4.5 inches
Answer:
8/9x4/3
32/12
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Answer:
Y=2.50x+3
Step-by-step explanation:
Because the $3 fee is not changing but the 2.50 is changing every pound that they get.
Answer:
(B) $200,000
Step-by-step explanation:
The value of the simple interest account can be found using the formula ...
A = P(1 +rt) . . . . . where P is the principal invested at rate r for t years
__
Using the given values, we find the value of the account to be ...
A = $125,000(1 +0.04×15) = $125,000(1.6)
A = $200,000
Katie's savings will be worth $200,000 after 15 years.