Answer:
The expression that calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s is 
Step-by-step explanation:
We are given:
Distance = 100 m
Time = 20 s
We need to find:
Speed
The formula used is: 
Putting values and finding the expression

So, the expression that calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s is 
<em>Note: Kindly recheck your options, As option B is not written correctly.</em>
Answer:
A= none
B= none
C= vertical angels, complementary and supplementary angels.
D= Adjacent angels
Step-by-step explanation:
It would be 18 r because 9-3=6+12=18
If you multiply or divide both sides of an inequality by a negative number, reverse the direction of the inequality sign!
5x + 4x + 6x = 15x
3y - 5y + 6y - 12y = -8y
6 + 12 - 8 = 10
15x - 8y + 10
No hablo español, así que no puedo darte una buena explicación. Lo siento mucho.
Utilicé un traductor