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3 years ago

F(x)= x^2 - 2x + 7 Find F(-1)

Mathematics

2 answers:

Leni [432]3 years ago

8 0

Answer:f(1)=-4, f(1)=1

Just substitute the value to the x, Like this.

F(x)=x²+2x-7

F(1)=(1)²+2(1)-7

=1+2-7

=3-7

=-4

Step-by-step explanation:

Levart [38]3 years ago

6 0

Answer:

f(- 1) = 10

Step-by-step explanation:

Substitute x = - 1 into f(x) , that is

f(- 1) = (- 1)² - 2(- 1) + 7 = 1 + 2 + 7 = 10

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Solve the problem down below: ty :P

AVprozaik [17]

Answer:

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2 years ago

Find The value of x, y and z

Ratling [72]

Answer:

x = 18 ; y = 10 ; z = 102°

Step-by-step explanation:

The triangle in the pic is an isosceles triangle.

As it is an isosceles triangle , it's two sides will be equal .

$= > 3x - 42 = 12$

$= > 3x = 42 + 12 = 54$

$= > x = \frac{54}{3} = 18$

Also, both the base angles will be equal.

$4y - 1 = 39$

$= > 4y = 39 + 1 = 40$

$= > y = \frac{40}{4} = 10$

According to angle sum property of a triangle , sum of measure of all the angles of a triangle is equal to 180°. So,

$z + 39 + 39 = 180$

$= > z + 78 = 180$

$= > z = 180 - 78 = 102$

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3 years ago