Answer:
S' (1,-2)
S'' (0,0)
Step-by-step explanation:
Answer:
4x - 7
Step-by-step explanation:
We can simplify this expression by subtracting the binomial (a bracket with two terms) and collecting like terms (numbers with the same variable).
When subtracting a binomial, are actually multiplying each term in the binomial by negative one.
7x -(7 + 3x)
= 7x -1(7 + 3x) Distribute -1 to each of the numbers
= 7x + (7*(-1) + 3x*(-1)) Multiply
= 7x + (-7 - 3x) Get rid of the brackets.
= 7x - 7 - 3x Combine like terms
= 4x - 7 Simplified expression
Answer:
0.3935 to 4 places of decimals.
Step-by-step explanation:
Use binomial probability tables or an online probability calculator.
Here Prob(a singles success) = 0.08333 ( that is 1/12)
Number of successes = 3 and number of trials = 27.
You want the probability of the variable X being >= x.
Answer:
a. 2/3 or 0.6666...
b. AB = 6cm and AD = 3cm
Step-by-step explanation:
28/42 = 2/3
14/21 = 2/3
42*1/7 = 6
21*1/7 = 3
Let same number of hours = x,
since the salary earned is also the same, then
Salary of supervisor A = $25x
Salary of supervisor B = $20(30)+$30(x-30)
Equating
25x=600+30(x-30)
30x-25x=900-600
5x=300
x=60 hours
Check:
Salary of supervisor A = 25*60=1500
Salary of supervisor B = 20*30+30*(60-30)=600+900=1500, ok.