Really need this please explain some work too. Thx!
127.50 = 1,500(0.0425) * x
127.50 = 63.75 * x
x= 127.50/63.75
x=2
Devin has 15 nickel coins and 5 quarter coins.
Step-by-step explanation:
Total worth = 200 cents
1 nickel = 5 cents
1 quarter = 25 cents
Let,
Nickels = x
Quarters = y
According to given statement;
5x+25y=200 Eqn 1
x = 3y Eqn 2
Putting x=3y in Eqn 1
Dividing both sides by 40
Putting y=5 in Eqn 2
Devin has 15 nickel coins and 5 quarter coins.
Keywords: linear equation, substitution method
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Answer:
Step-by-step explanation:
Thinking process:
Let the problem be expressed like this:
The water level in the high tide be given by:
The water level in the high tide be given by:
The difference between the two is given by the equation:
The height in in low tide is 0.2 ft, so the equation becomes: