Answer:
The answer is -94 but where is b
Step-by-step explanation:
2(4)-6(17)=-94
The irrational number would be square root 15
Answer:
a) negative reciprocals
Step-by-step explanation:
1. Mean.
2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:
so the variance:
and the standard deviation:
</span>
Answer:
126
Step-by-step explanation:
21 + 4 = 25 (blue plus white marbles)
150/25 = 6 (all the marbles divided by how many we know are white and blue)
21 x 6 = 126