The diagram shows the artificial lake when Amanda jogged twice around the lake she jogged a distance of 2,700 meters find the va
1 answer:
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Answer:
y = x² - x +
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Here (h, k) = (1, 3 ), thus
y = a(x - 1)² + 3
To find a substitute (- 1, 5) into the equation
5 = a(- 1 - 1)² + 3 ( subtract 3 from both sides )
2 = 4a ( divide both sides by 4 )
a = , thus
y = (x - 1)² + 3 ← expand factor using FOIL
y = (x² - 2x + 1) + 3 ← distribute parenthesis
= x² - x +
+ 3
= x² - x +
Answer:
dawn= x
erik= 1/3 x
jiro= 1/3 x -4
alita= 2(1/3 x -4)
x+x+ (1/3) x -4+2(1/3 x -4)=72
Step-by-step explanation: