Substitute the given value of y into the equation y=7x+15
Move the variable to the left-hand side and change its sign
Collect like terms
Divide both sides of the equation by -5
Substitute the given value of x into the equation y=2x
Solve the equation for y
The possible solution of the system is the ordered pair (x,y)
Answer:
x = 6+5y
Step-by-step explanation:
x - 5y = 6
Add 5y to each side
x - 5y+5y = 6+5y
x = 6+5y
9514 1404 393
Answer:
4%
Step-by-step explanation:
We assume the interest earned is simple interest, because that make the numbers come out "nice."
The account balance is given by ...
A = P(1 +rt) . . . . principal P earns simple interest at annual rate r for t years
1080 = 1000(1 +r·2) . . . . fill in the given values
1.08 = 1 +2r . . . . . . . . . . divide by 1000
0.08 = 2r . . . . . . . . . . . subtract 1
0.04 = r = 4% . . . . . . . divide by 2
The annual interest rate is 4%.
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<em>Additional comment</em>
If interest is compounded annually, the annual rate is about 3.92%. If it is compounded continuously, the rate is about 3.85%.
Answer:
9.2
Step-by-step explanation:
hope it helps
Answer:
5/10
Step-by-step explanation:
Five out of ten because California only has ten letters and there’s only five vowels