Answer:
I mean I can give you some of my advice on 7 but I'm not too great on the others, but I hope this will help:
Step-by-step explanation:
Okay so on 7 you first need to figure out the amount of people in each grade and then you need to look at the premade answers and try to split it up AND on the total part you need to put how many people all together. If I'm not mistaken, I'm pretty sure there are more right-handed people, then left-handed people on 7th graders.
The inequality 12x+9 ≥ 21 represents the minimum rate Chanita have to swim on second day to complete the distance.
Step-by-step explanation:
Given,
Length of English Channel = 21 miles
Distance covered on first day = 9 miles
Time to complete remaining distance on second day = 12 hours
Let,
x be the distance covered per hour on second day.
Time to cover distance * Distance covered per hour + Distance on first day ≥ Total distance
12x+9 ≥ 21
The inequality 12x+9 ≥ 21 represents the minimum rate Chanita have to swim on second day to complete the distance.
Keywords: addition, inequality
Learn more about addition at:
#LearnwithBrainly
Answer:
r = 15 1/6
Step-by-step explanation:
change every thing to have a 6 in the denominator
31/6 = 5 1/6
60/6 = 10
add the 31/6 to both sides to get the r by itself
60/6 + 31/6 = 91/6
r = 15 1/6
Answer:
36.1 km/h
Step-by-step explanation:
rate at which the distance is changing is given by relative velocity(vR)
Look at the diagram. THe diagram shows relative motion. From relative motion diagram, velocity vector diagram is drawn.
From velocity vector diagram, it can be seen that relative velocity or vR can be calculated using pythagoras theorem.
vR²= vA² + vB²
vR²= 30²+ 20²
vR= 36.1 km/h
