If y is directly proportional to x² and y=2 when x=3 Find the value of y when x=6Please Help
1 answer:
Answer:
y = 8
Step-by-step explanation:
Given that y is directly proportional to x² then the equation relating them is
y = kx² ← k is the constant of variation
To find k use the condition y = 2 when x = 3, then
2 = k × 3² = 9k ( divide both sides by 9 )
= k
y = x² ← equation of proportion
When x = 6, then
y = × 6² =
× 36 = 2 × 4 = 8
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Answer:
Ending balnace is; $5875
Step-by-step explanation:
Given: Principal(P) = $5,000 , Rate(R) = 5% and Time(T) = 3.5 years.
Using the simple interest(I) formula:
Substitute the given values in the formula to calculate interest(I);
Simplify:
To find the ending balance;
Ending balance is the net residual balance in an account.
Ending Balance = Principal + Interest
=
Therefore, the ending balance is, $5, 875