Answer:
D. 15x10^20
Step-by-step explanation:
The rule for scientific notation is that the coefficient has to be between 1 and less than 10. This means there is only one digit in front of the decimal. 15x10^20 should be written as 1.5x10^21 to follow the rule.
Answer:
10^4
Step-by-step explanation:
A) 51, assuming this is a *right* triangle:
38^2+34^2 = 50.99^2, rounding 51!!
Answer:
x= (5±√29)÷2
Step-by-step explanation:
Quadratic formula:
x= (-b±√b²-4ac)÷2a
Answer:
y=7x
Step-by-step explanation:
x=time
