Answer:
D) 0.211
Step-by-step explanation:
The probability of getting a correct answer is 1/4, so the probability of an incorrect answer is 3/4.
The probability of 2 correct and 2 incorrect is (1/4)(1/4)(3/4)(3/4) = 9/256.
There are C(4,2) = 4·3/(2·1) = 6 ways to have some combination of 2 correct and 2 incorrect out of 4 questions. So, the probability of that result is ...
... 6 · 9/256 = 27/128 =0.2109375 ≈ 0.211
Answer:
The value of the variable in an equation which satisfies the equation is called a Solution to the Equation.
example: So for example we take the equation 2n=10, If n = 1, the number of matchsticks is 2.
hope it helps
Answer:

Step-by-step explanation:
1) Remove parentheses.

2) Regroup terms.

Answer:
Step-by-step explanation:
10:6
15:9
Ratios sort of work like fractions.
Answer:
The answer is A. True
Step-by-step explanation: