A cyclist rode 1 mile at full speed in 3 minutes with the wind and returned in 4 minutes against the wind, again pedaling at full speed. Find his speed without the wind. ("Challenge" question)
Answers
so 1 mile per 3 minute or 1 times 20=20 3 times 20=60
20 miles in 60 minutes or 20 miles per hour
20 mph with wind
4 mins agains the wind multiply 15 15 miles per hour agains the wind
so d=st
distances are the same d=st 20mph with the wind 20=wind+real speed
15mph agains the wind 15=real speed-wind
20=w+rs 15=-w+rs add together 35=2(rs) divide 2 real speed=17.5
Krystal made 8 quarts of soup on Monday,5 quarts of soup on Tuesday, and 5 quarts of soup on Wednesday. if she serves each guest 1 cup of soup, how many quest can she serve in all.
Answers
Simple,
add all the quarts...
8+5+5=18
There are 18 quarts.
Now for 1 quart= 4 cups
So take 18*4=72
Thus, Krystal can serve 72 cups worth of soup to her guests.
Work out the volume of a cube of edge 4m
Answers
The volume of a cube is (the length of its edge)³ .
That's why ( )³ is called ( )-cubed .
(4m)³ = (4m) x (4m) x (4m)
= (4 x 4 x 4) (m x m x m)
= 64 m³ .
Can someone please explain to me how to find the area of this trapezoid?
Answers
The formula for finding a trapezoid's area is:
A = a+b ------ x h 2 So for this, you just have to plug the numbers in.
A = 32 in²
Area=Base*Base/2(height) To simplify it, get both of the bases, and multiply them. Then divide the product by 2. Then multiply that answer by the height
Wow the teacher gave me so much homework was worderin if u people could help me with a few problems..-4a=48 12+-132 v+914=-23
Answers
1. a=-12 2. 120 3.-937
There are 8 students on the minibus. Five of the students are boys. What fraction of the students are boys?
Answers
there are 5/8 that is the answer
The answer is 5/8 of the students of the bus were boys. This means that 62% or 0.625 of the students were boys.