Answer: he didn't make a mistake?
Step-by-step explanation:
2x2 + 1 + <span> x2 – 7
= 3x2 - 6
answer is </span><span>C. 3x2 – 6</span>
Answer:
D) radical 26
Step-by-step explanation:
So this is a question where you need to find the hypotenuse of a triangle
the sides are 1 and 5
you can use Pythagoras (a^2+b^2=c^2)
substitute the values in
1^2+5^2=c^2
simplify the exponents
1+25=c^2
add them together
26=c^2
take the square root of 26
the answer is radical 26
The first is going to be, D. & the second question is, C.
We divide the total set into several sub-sets (subgroups) that contain the exact same number of members. This way we know the number of total members by adding the number of total subsets.
