Answer:
y = -5/2x + 10
Step-by-step explanation:
Step one: Add -5x to both sides.
5x + 2y + -5x = 20 + -5x
2y = -5x + 20
Step two: Divide both sides by two.
2y/2 = -5x + 20/ 2
y = -5/2x + 10
Hope my answer help.
Answer:
125 Dolphins
Step-by-step explanation:
The number of dolphins varied linearly with the number of fish.
The number of dolphins = D
The number of fish = F
Hence:
D ∝ F
D = kF
When 400 fish were present 250 dolphins appeared
Solving for k
250 = 400k...... Equation 1
Also
when 300 fish were present, 200 dolphins appeared.
200 = 300k...... Equation 2
So: we find k = Constant of Proportionality
250 = 400k...... Equation 1
200 = 300k...... Equation 2
We Subtract Equation 2 from Equation 1
50 = 100k
k = 50/100
k = 1/2
How many dolphins would appear if 250 fish were present?
D = kF
D = 1/2 × 250
D = 125 Dolphins
The answer is 2 and 8.5 over 10.
Answer:
2 over 5
Step-by-step explanation:
What you need to do is find a common denominator. In this case it is 15. 2 over 5 = 6 over 15 so since 6/15 < 7/15 and 6/15= 2/5, 2/5 < 7/15
