247 is equal to 200+40+7.
358 is equal to 300+50+8.
To find the answer, add 200+300=500.
40+50=90
7+8=15
500+90+15=605
The answer is 605.
F(-1) = 2(-1)^2 + 8(-1)
= 2(1) + (-8)
= -6
Answer:
12/20 and 5/20
Step-by-step explanation:
for 3/5is multiplied with 4 both numerator and denominator
as known as 1/4 will multiplied by 5/5
Which represents their equivalent fractional part
Choose B: 7/8
You need to find the total distance and the total time. The total distance is two times the distance to school, 2d.s=d/t=>t=d/sWhere s is speed, d is distance and t is time. So the time taken to get to school is:d/s1and the time taken to get back is:d/s2so the total time is:d/s1+d/s2=d(1/s1+1/s2)So, as speed = distance/time, divide the total distance by the total time:2d/d(1/s1+1/s2)=2/(1/s1+1/s2)=2/(1/20+1/40)=80/3≈26.7km/hr
