What is the volume of a rectangular pyramid below if the height is 2 cm?
2 answers:
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Answer:
x > -35
Step-by-step explanation:
When Janet got rid of the 4, she added it to -3 instead of subtracting 4.
So, the next step should look like this:
> -7
Then, multiply both sides by 5.
x > -35
This is the correct way of solving for x in this inequality.
y = 7x - 3
Note the gradient of the tangent is the derivative of y at x = 1
Differentiate using the power rule
(a
) = na
y = 3x³ - x² + 2
= 9x² - 2x
x = 1 : = 9 - 2 = 7 ← gradient of tangent
equation in point- slope form, using m = 7 and (a, b) = (1, 4)
y - 4 = 7(x - 1) ← point-slope form
y - 4 = 7x - 7
y = 7x - 3 ← in slope-intercept form