Let the width of the park be; w
width=w
length=3w
and let the distance between opposite corners of the park be; d
then the expression is; (w)squared +(3w)squared = (d) squared
Answer:
15%
Step-by-step explanation:
Ryan's marbles = x
Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15)
So, Marie marbles = (x-15):4
If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie.
We got an equation:
Multiply both sides by 8:

Add 600 and subtract 3x on both sides:

Divide both sides by 5:

Answer: Ryan have 111 marbles.
Answer:
see explanation
Step-by-step explanation:
ΔABE and ΔACD are similar hence the ratios of corresponding sides are equal, that is
=
= 
Using the first pair of ratios then
= 4 =
, hence
4ED = 26 ( divide both sides by 4 )
ED = 6.5 cm
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(b)
Similarly
= 4, hence
BE = 4 × 18 = 72 cm