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Elina [12.6K]
3 years ago
6

F(x)=x2-x+2;f(1) ???

Mathematics
2 answers:
zheka24 [161]3 years ago
6 0
I think it is...
F(1)=1(2)-1+2 which equals -1 
I'm not sure tho 
vodka [1.7K]3 years ago
6 0
F(1)=1^2-1+2
f(1)=1-1+2
f(1)=2
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Type the correct answer in the box. Round your answer to two decimal places.
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Angle TRQ is 23 degrees and the length from S to R is 3.3 units.

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3 years ago
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The scale on a map is 1 cm: 7 km. If two cities are 15 cm apart on the map, what is the actual distance between the cities?
Lostsunrise [7]

Answer: C. 105 km

Step-by-step explanation:

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5 0
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Where does the normal line to the parabola y = x − x2 at the point (1, 0) intersect the parabola a second time?
Ksivusya [100]
Find the line that is normal to the parabola at the given point
remember that normal means perpendicular
perpendicular lines have slopes that multiply to -1
we can use point slope form to write the equation of the line since we are given the point (1,0)

we just need the slope

take derivitive
y'=1-2x
at x=1
y'=1-2(1)
y'=1-2
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the slope is -1
the perpendicular of that slope is what number we can multiply to get -1
-1 times what=-1?
what=1
duh
so
point (1,0) and slope 1
y-0=1(x-1)
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solve for where y=x-1 and y=x-x² intersect

set equatl to each other since equal y
x-1=x-x²
x²-1=0
factor difference of 2 perfect squares
(x-1)(x+1)=0
set to zero

x-1=0
x=1
we got this point already

x+1=0
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sub back
y=-1-(-1)²
y=-1-(1)
y=-1-1
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it intersects at (-1,-2)
7 0
3 years ago
Can't get this one. Anyone know how to do it?
avanturin [10]
Function g takes 4 as input and return 2 as output
f takes input 2 and returns output 4
from the graph
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7 0
3 years ago
John was getting rid of some things so he sold his golf club for $40 and he originally bought it for $75. What is the percent of
alina1380 [7]
First work out the difference:
75-40 = 30
30/75 * 100 = 40% decrease.
Please mark as brainliest
6 0
3 years ago
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