Answer:
x = -3 x=8
Step-by-step explanation:
(x+3)(x-8)=0
Using the zero product property
x+3 =0 x -8 = 0
x = -3 x=8
X intercept:(-4,0)
y intercept:(0,-20)
Answer:
gradient = 9
Step-by-step explanation:
The gradient of the tangent at x = a is the derivative
Differentiate using the power rule on each term
(a ) = na and ( constant ) = 0
y = 2x² + 5x - 3
= 2.2 + 5 - 0
= 4x + 5
( x = 1 ) = 4(1) + 5 = 4 + 5 = 9 ← gradient of tangent
23 + 23 + 19 +5 +6 +5 +5 +8 = 94
perimeter = 94 inches
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