The account will have decreased by $2640 after 2/3 year.
so my equation is x^2-30x=-125. i already completed the square but what does it mean when i have to add (b/2)^2
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Hi there!
We know that the equation for the volume of a pyramid is:
V = 1/3(bh)
We know that:
V = 200 km³
b = 12 × 5 = 60 km²
We can plug these into the equation:
200 = 1/3(60)(h)
Simplify:
200 = 20h
Divide both sides by 20:
200/20 = 20h/20
h = 10 km
Y=2x+6
gradient is found from the formula,
y intercept is found by subbing the values of (-1,4) into the equation y=2x+c
gradient is found from the formula,
y intercept is found by subbing the values of (-1,4) into the equation y=2x+c