knowing the zeros we can rewrite the quadratic function as:
f(x) = (x+2)(x-6)
multiplying both terms we have:
f(x) = x^2 - 4x -12
where:
a = 1
b = -4
c = -12
formula fot axis of symmetry is x= -b/2a
then x= -(-4)/(2*1) = 2
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Answer:
r = 3.75
Step-by-step explanation:
Using Pythagoras' identity in the right triangle ABC
AC² = BC² + AB²
(r + 6)² = r² + 9²
r² + 12r + 36 = r² + 81 ( subtract r² from both sides )
12r + 36 = 81 ( subtract 36 from both sides )
12r = 45 ( divide both sides by 12 )
r = 3.75
Marilyn can cut 14 equal pieces
<em><u>Solution:</u></em>
Given that, Marilyn has 7/8 yard of ribbon
To find: Maximum number of 1/16 yard long pieces Marilyn can cut from this ribbon
From given information,
Number of pieces that can be cut from total length of ribbon is found by dividing the total length of ribbon by length of 1 piece
Therefore,
Substituting the values, we get
Thus 14 pieces of ribbon can be cut
Answer:
1800
Step-by-step explanation:
you have to times 60 and 30