1. B A C
Reason:
A: 4
is 12.6
B: the Square root of 18.7 is 4.32
2. a
Reason: the square root of 80 is 8.9, thus closest to 9 from all the others.
3. C
Reason: 6/7 = 0.86, and the square root of 3/4 = 0.87
Step-by-step explanation:
2×2.5x+2×8=11
5x+16=11
5x=11-16
5x=-5
x=-1
The distributive property of 75/3 may look like:
75/3 = 30/3 + 30/3 + 15/3
It's easier to count 30/3 than 75/3, so I did it twice and then I had 15 left, because 75 - (30 + 30) = 15.
That's basicly how you do it - just try to find the easiest number to divide (smaller then the given dividend).
Answer:6
Step-by-step explanation:
It will take her 54 days to take 10 more tests
