Answer:
see explanation
Step-by-step explanation:
Her error is in squaring (2y)²
She has (2y)² = 2y²
when it should be 2y × 2y = 4y²
Then
(2y)² = 6² + 8²
4y² = 36 + 64
4y² = 100 ( divide both sides by 4 )
y² = 25 ( take square root of both sides )
y = 
= 5
6*3 = 18
6*9 = 54
so 18 +54 is the correct answer
1.) 58
2.) 205
3.) 134
4.) 150
5.) 21
6.) 670
7.) 33
8.) 50/7 or 7 1/7
9.) 42
These are all your answers
Answer:
320+40=360
Step-by-step explanation:
8(40+5)
320+40=360
1.5 meters
There is 30 cm in a foot and 5 feet times 30 is 150. There is 100 cm in a meter so 150/100 is 1.5 meters.
