Answer:
3rd one
Step-by-step explanation:
i did it
To show the negative of a square root, a negative sign would have to be placed outside the radical.
Answer:
1. f(4) or f(n)= 28
2. f(-2) or f(n)= -2
(please consider marking brainliest <3 )
Step-by-step explanation:
n=4 n=-2
f(n)= 5(n)+8 f(n)= 5(n)+8
f(n)= 5(4)+8 f(n)= 5(-2)+8
(n)= 20+8 f(n)= -10+8
f(n)=28 f(n)=-2
The shadow will add 1/3 as much height to the object, making the cardboard box 4 feet tall
Plug the points into the distance formula.
d= (sqrt) (x2-x1)^2+(y2-y1)^2
Plug the first set of points in. (-2,1) (6,1)
d= (sqrt) (6-(-2))^2+(1-1)^2
d= (sqrt) (6+2)^2+(0)^2
d= (sqrt) 8^2+0
d= (sqrt) 64
d= 8
Now, find the distance for the other two points. (6,1) (6,-3)
Q to R.
d= (sqrt) (x2-x1)^2+(y2-y1)^2
d= (sqrt) (6-6)^2 +(-3-1)^2
d= (sqrt) 0^2+-4^2
d= (sqrt) 16
d= 4
Now, finally, find the distance between R and S. (6,-3) and (9,-3)
d= (sqrt) (x2-x1)^2 + (y2-y1)^2
d= (sqrt) (9-6)^2+ (-3-(-3)^2
d= (sqrt) 3^2+ 0^2
d= (sqrt) 9
d= 3
Now, add all those distances together.
8+4+3= 15
"B" is the correct answer. 15 units.
I hope this helps!
~kaikers
