A car drives at a speed of 500 miles per hour. It takes the car "r" hours to reach its destination. Enter an equation that can be used to find the number of hours it will take the car to 450 miles away

Step-by-step explanation:

v = 500 mi/r hrs

d = vt

t = d/v

t = 450 / (500/r)

t = 450r / 500

t = 0.9r

0.9r

Step-by-step explanation:

Given,

Speed = 500 miles per hour

Time = r hours

Distance = 450 m

So,

Time = Distance/Speed

r = 450/500

r = 9/10

9/10 × r = Time

0.9r = Time

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.