"sqrt" is shorthand for "square root"
The rule to use is
sqrt(x*y) = sqrt(x)*sqrt(y)
Factor 40 into 4*10, then use the rule above to get the following
sqrt(40) = sqrt(4*10)
sqrt(40) = sqrt(4)*sqrt(10)
sqrt(40) = 2*sqrt(10)
Answer:
This triangle is not a right triangle
Step-by-step explanation:
If it were a right triangle, then the pythagorean theorum would work
a^2 + b^2 = c^2
12^2 + 7^2 = 15^2
144 + 49 = 225
This is not true because 144+49=193, not 225
So this triangle is not a right triangle
Answer:
20/25
Step-by-step explanation:
Here, we want to calculate the probability that a student who plays an instrument is in band
The number of students who play instruments are;
25
Amongst this,
20 are in a band
So the probability of having a student who plays instrument and is in a band will be;
20/25 = 4/5
Answer:
https://tex.z-dn.net/?f=(x%2B10)%5E%7B2%7D%20
Step-by-step explanation:
