1) Finding the zeros of this function f(x) =x² +3x -18
f(x) = x²+3x-18 <em>Factoring this equation, and rewriting it</em>
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<em>Which two numbers whose sum is equal to 3 and their product is equal to 18?</em>
<em>6 -3 = 3 and 6 *-3 = -18</em>
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<em>So we can rewrite as (x +6) (x-3)</em>
<em> </em>
(x+6)(x-3)=0 <em>Applying the Zero product rule, to find the roots</em>
x+6=0,
x=-6
x-3=0,
x=3
S={3,-6}
2) Setting a table, plugging in the values of x into the factored form: (x-6)(x-3)
x | y |
1 | -14 (1 +6)(1-3) =-14
2 | -8 (2 +6)(2-3) =-8
3 | 0
4 | 10
-5 | -8
-6 | 0
3) Plotting the function:
2% and 0.12 as the second answer
Lets w is width
length = 2w - 3
w(2w - 3) = 14
2w^2 - 3w = 14
2w^2 - 3w - 14 = 0
(2w - 7)(w + 2) = 0
2w - 7 = 0
w = 7/2 = 3.5
l = 2w -3 = 2(3.5) - 3 = 4
answer:
width = 3.5
length = 4
Answer:
6.4008
Step-by-step explanation:
Answer:
![\frac{43}{110}](https://tex.z-dn.net/?f=%20%5Cfrac%7B43%7D%7B110%7D%20)
Step-by-step explanation:
43 is the total amount of junior students
while 110 is the total amount of students who use Company B
and... in probability it's never more than one that's why it isn't
![\frac{110}{43}](https://tex.z-dn.net/?f=%20%5Cfrac%7B110%7D%7B43%7D%20)
Hope it helps