Answer:
The court has a length of 70 feet, and a width of 35 feet.
Step-by-step explanation:
We know two things:
the the length is twice the width
l = 2w
We also know that the perimeter is 210 feet. Noting that the perimeter of a rectangle is equal to twice its length plus twice its width, we can say:
210 = 2w + 2l
Now we can substitute the first definition of l into the second equation:
210 = 2w + 2(2w)
And now we can solve for w:
210 = 2w + 2(2w)
210 = 2w = 4w
210 = 6w
w = 210 / 6
w = 35
Now that we have w, we can plug that into our first little equation to find l:
l = 2w
l = 2 × 35
l = 70
So the width of the court is 35 feet, and it's length is 70.
56=70% of __
56/0.7=80
56 is 70% of 80.
Hope I helped!
Next time, don't procrastinate much.
I think the answer wold be the 3rd one!
Answer:
31
Step-by-step explanation:
In order to guarantee that you get 3 colors, you much choose a number that exceeds the number of marbles of the most prevalent 2 colors.
That is, you could choose 30 marbles and only end up with 16 green and 14 blue. To guarantee that you also choose a red, you must choose 31 marbles.
