Since A‘(-1,1) is on the line y=-x, reflecting it about the line doesn't change its coordinate, so A's coordinate is (-1,1). Reflecting B'(-2,1) about y=-x switches both the sign and the number of x and y, so B=(-1,2), and C'(-1,0) becomes C(0,1). Drawing out the graph with the points and the line helps.
Answer:
t = 4 seconds
Step-by-step explanation:
The height of the projectile after it is launched is given by the function :

t is time in seconds
We need to find after how many seconds will the projectile land back on the ground. When it land, h(t)=0
So,

The above is a quadratic equation. It can be solved by the formula as follows :

Here, a = -16, b = 32 and c = 128

Neglecting negative value, the projectile will land after 4 seconds.
Answer:
the first one
Step-by-step explanation:
Answer: 16 inches.
Step-by-step explanation:
given data:
length of string A = 80 centimeters.
length of string B = 64 centimeters.
step 1
we solve for the Highest common denominator between them.
highest common denominator = 16.
what this represents is that no string would be cut more than 16inches so they can all have equal lengths at the end of cutting.