Which math sentence can be used to determine if this triangle is a right triangle?

A triangle has side lengths 21, 20, and hypotenuse 29.
20 + 21 = 29
20 squared + 21 squared = 29 squared
29 + 21 = 20
29 squared + 21 squared = 20 squared

square on longest side

=

29

2

=

841

sum of squares on other 2 sides

=

20

2

+

21

2

=

841

This means that the triangle is right , with hypotenuse of 29.

Step-by-step explanation:

b

Step-by-step explanation:

i took the quiz on edge

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles