Since measure REU equal measure SFT, RE=FT and SF=EU then the two triangles REU et SFT are similar.
Then we deduce that the two sides RU and ST are equal, RU=ST.
Also, since the two triangles above are similar, then the two angles FST and RUE are equal. We deduce that the two lines RU and ST are parallel (interior opposite angles principles.)
We have two facts now:
RU = ST and RU parallel to ST, we deduce that the quadrilateral is a parallelogram.
Answer: 15 kilometers per hour
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let x be the number of apples and y be the number of oranges Kayla buys.
She needs to buy an assortment of at least 15 apples and oranges, then

Apples cost $0.65 each, then x apples cost $0.65x
Oranges cost $0.78 each, then y oranges cost $0.78y.
She spends less than $20.00, so

Not that the number of apples and oranges must satisfy inequalities

so the following system of inequalities models this situation:

Answer:
60
Step-by-step explanation:
nPr=n!/(n-r)!
5!/(5-3)!
(5*4*3*2*1)/(2*1)
120/2
60