3x²+x-5=0
a = 3, b = 1, c= -5
-> ∆ ( delta ) = b²-4ac = 61 > 0
-> x1 =( -b+√∆ )÷ 2a =...
x2 = (-b-√∆)÷2a =...
p/s: do your teachers teach you how to use ∆ ( delta ) in maths calculation ? i live in europe and our teachers teach us that way. however, it is a rịght and fast way. you should learn it.
Answer:
The probability that an employee receives a code with all 5 numbers the same is .
Step-by-step explanation:
Consider the provided information.
The numbers which we can use in code is: 0,1,2,3,4,5,6,7,8,9
That means there are 10 numbers which we can use.
The total ways of selecting a 5 digit number with all 5 numbers the same = 10.
The total ways of selecting a 5 digit number is: 10×10×10×10×10=
The required probability is:
Hence, the probability that an employee receives a code with all 5 numbers the same is .
Answer:
1.5 m/s
Step-by-step explanation:
To find the rate of change for two different sets of data, you have to divide the distance and the time to find the speed.
Using the general formula: d = rt, where d=distance, r=rate and t=time,
r = d/t