(a) - 5
since y varies inversely as x then k = yx ( k is the constant of variation )
using y = 5 when x = - 1, then k = 5 × - 1 = - 5
Answer:
Step-by-step explanation:
x² + 5x + 4 =0
Product =4
Sum = 5
So, factors = 4*1
x² + 1x + 4x + 4*1 = 0
x*(x + 1) + 4*(x + 1) = 0
(x + 1)(x + 4) = 0
Answer:
25x + 5y + z cents
Step-by-step explanation:
1 quarter is worth 25 cents.
1 nickel is worth 5 cents.
1 penny is worth 1 cent.
Therefore, x quarters, y nickels and x pennies will be worth:
(x * 25) + (y * 5) + (z * 1)
= 25x + 5y + z cents