It takes 53 minutes for 6 people to paint 6 walls. How many minutes does it take 20 people to paint 20 walls?
2 answers:
Answer:
53 minutes
Step-by-step explanation:
Let x minutes taken 20 people to paint 20 walls
53 minutes are taken for 6 people to paint 6 walls
Time taken by 1 person=
Time taken by one person = 53 minutes
Similarly, when 20 people have to paint 20 walls
It will also take 53 minutes.
Hence, the correct answer is 53 minutes.
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Answer:
vertex = (2, - 9 )
Step-by-step explanation:
Given a quadratic in standard form : ax² + bx + c : a ≠ 0
Then the x- coordinate of the vertex is
= -
x² - 4x - 5 ← is in standard form
with a = 1, b = - 4, thus
= -
= 2
Substitute this value into the quadratic for corresponding value of y
(2)² - 4(2) - 5 = 4 - 8 - 5 = - 9
vertex = (2, - 9 )