Answer:
No
Step-by-step explanation:
To determine if the 3 sides form a right triangle.
Use the converse theorem of Pythagoras.
If the square of the longest side is equal to the sum of the squares of the other two sides then the triangle is right,
longest side = 14 and 14 ² = 196
9² + 12² = 81 + 144 = 225
Since 196 ≠ 225 the triangle is not right
Answer:
The 10th number in the sequence would be 39
Step-by-step explanation:
Each number is four more than the last.
First time: 3
Second time: 3+4=7
Third time: 7+4=11
Fourth time: 11+4=15
Fifth time: 15+4=19
Sixth time: 19+4=23
Seventh time: 23+4=27
Eighth time: 27+4=31
Ninth time: 31+4=35
Tenth time: 35+4=39
There is one cake
It is divided among x family members, so each gets:
1/x
The father took 1/5 which is 4 times greater than each one's piece. So:
1/5 = 4(1/x)
1/5 = 4/x
x = 20
There are 20 family members so the answer is none of these
