Answer:
√(74)
Step-by-step explanation:
Pythagoras's Method: a^2+b^2 = c^2 (only works on right triangles)
Put the numbers in:
5^2+7^2 = C^2
c^2 = 74
c = √(74)
Hope it helps! <3
Answer:
not being a a** but scan it on photomath. that app is amazing
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
pretty sure its b.......
Answer:
36 erasers
Step-by-step explanation:
Let number of erasers be e
let number of rulers be r
We can write:
e + r = 70
and
After giving away, he has
Erasers: 2/3e
Rulers: r - 10
These two are equal, so we can write and solve:
2/3e = r - 10
2/3e + 10 = r
Putting this in initial equation, we have:
e + (2/3e + 10) = 70
5/3e + 10 = 70
5/3 e = 60
e = 36
And rulers is:
r = 2/3(36) + 10 = 34
Hence, he had 36 erasers in the beginning
Answer: 
:)
Step-by-step explanation:
