so change a value to a percentage format, we simply divide it by 100.
for example, 2% can be rewritten as 2/100 or 0.02 in decimal format.
now, let's first convert the mixed fraction to improper, and then do the percentage format and simplification.
Mary has a monthly salary of $1200. She spends $280 per month on food. What percent of her monthly salary does she spend on food
1 answer:
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Answer:
direct variation
Step-by-step explanation:
For direct variation k = ← k is the constant of variation
For inverse variation k = yx
Expressing the data as ordered pairs
(6, 9), (8, 12), (12, 18), (20, 30)
k = =
=
=
=
= 1.5 ← indicating direct variation
Equation is
y = kx = 1.5x
Answer:
8 and 8; 64
Step-by-step explanation:
1. x + y = 16
2. y = 16 - x
3. Product = xy = x (16 - x) = - + 16x = f(x)
4. x-coordinate of the vertex =
5. y = 16 - 8 = 8
6. xy = 8(8)= 64