Answer: 6 + 8
Step-by-step Explanation: When you're adding and subtracting positives and negatives and you see a minus a negative in a problem, you can change it to plus a positive.
So 6 - (-8) can be thought of as 6 + (+8).
Answer:
0.000000049.
Step-by-step explanation:
This will have 7 zeros after the decimal point followed by 49:
4.9 × 10^–8 = 0.000000049.
If we imagine the decimal point making jumps to the right over the digits it takes 8 jumps till it gets to 4.9. that's where the -8 comes in.
X/15 = 10/20
20x = 150
x = 150/20
x = 7.5
The answer would be A 20c/d