fefebat

19.07.2019 • 

Mathematics

What is the graph of the function f(x) = the quantity negative x squared plus x plus 20 over the quantity x plus 4? a) a line that crosses the x axis at negative 5 and the y axis at 5. discontinuity exists at negative 4, 1. b) a line that crosses the x axis at 5 and the y axis at negative 5. discontinuity exists at 4, negative 1. c) a line that crosses the x axis at negative 5 and the y axis at negative 5. discontinuity exists at negative 4, 9. d) a line that crosses the x axis at negative 5 and the y axis at negative 5. discontinuity exists at 4, negative 9.

Ответ:

Scienceissofun6453

13.03.2022

Mathematics

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For this case we have a function of the form:
 f (x) = (-x ^ 2 + x + 20) / (x + 4)
 Rewriting we have:
 f (x) = (- (x + 4) (x-5)) / (x + 4)
 f (x) = 5 - x
 The equation is a straight line.
 Cut with x: (5, 0)
 Cut with x: (0, 5)
 Discontinued at x = -4
 f (-4) = 5 - (-4)
 f (-4) = 5 + 4
 f (-4) = 9
 That is, discontinuous in:
 (x, y) = (- 4, 9)
 
 a line that crosses the axis at positive 5 and the axis at positive 5. Discontinuity exists at negative 4, 9.
 Note: check the function again or the options.

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Ответ:

megan3226

12.11.2021

Mathematics

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3.5

Step-by-step explanation:

if a2+b2=c2 then it is 1^2+3^2=3.5^2

and doing all of that is 1+6=7 and you divide that and that is

3.5

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