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3 years ago

Let f(x)=x^2-5x+8 and g(x)=x^2-4 (f-g)(x)=

1 answer:

8 0

What you do here is subtract g from f: x^2 - 5x + 8 - (x^2 -4); x^2 - 5x + 8 - x^2 + 4; Rearranging gives you x^2 - x^2 - 5x + 8 + 4 which is, simplified, -5x + 12

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What type of function is y=2x^2

anastassius [24]

I guess the function is a parabola with vertex at (0,0) and opens down so the range is (-infinity, 0].

4 0

3 years ago

Evaluate l-x-2yl for x = -2 and y = 3.

ELEN [110]

Step-by-step explanation:

|...| means absolute value of "...". that means always the "+" value of "...", even if it is negative.

in other words

|-x| = x

|x| = x

|-x - 2y| for x = -2 and y = 3

|- -2 - 2×3| = |2 - 6| = |-4| = 4

3 0

2 years ago

Pls answer

cluponka [151]

Answer:

$8.49\ units$

Step-by-step explanation:

we know that

The Pythagorean Theorem states that in a right triangle

$c^2=a^2+b^2$

where

c is the greater side (the hypotenuse)

a and b are the legs

In this problem

Let

c=AB ---> distance from point A to point B

a ---> the difference of the x-coordinates both points

b ---> the difference of the y-coordinates both points

$a=1-(-5)=6\ units\\b=6-0=6\ units$

substitute

$AB^2=6^2+6^2$

$AB^2=72$

$AB=\sqrt{72}\ units$

$AB=8.49\ units$

6 0

3 years ago

F(t)=100−4.9t2 help me

stiv31 [10]

-19.6 m/s
Do you need the math as well?

7 0

3 years ago

Show that x=2 is a solution of the equation X^3-x-6

My name is Ann [436]

Answer:

x = 2 is the solution of x^3 - x - 6

Step-by-step explanation:

(x^3) - x - 6 = 0

If x = 2,

--> (2^3) - 2 - 6

= 8 - 2 - 6 = 8 - 8 = 0.

6 0

4 years ago