Just count the units and that should give you 7 units.
Answer:
c. 113
Step-by-step explanation:
Complete question is;
Multiple-choice questions each have 5 possible answers, one of which is correct. Assume that you guess the answers to 5 such questions.
Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, find P(WWWWC), where C denotes a correct answer and W denotes a wrong answer.
P(WWWWC) =
Answer:
P(WWWWC) = 0.0819
Step-by-step explanation:
We are told that each question has 5 possible answers and only 1 is correct. Thus, the probability of getting the right answer in any question is =
(number of correct choices)/(total number of choices) = 1/5
Meanwhile,since only 1 of the possible answers is correct, then there will be 4 incorrect answers. Thus, the probability of choosing the wrong answer would be;
(number of incorrect choices)/(total number of choices) = 4/5
Now, we want to find the probability of getting the 1st 4 guesses wrong and the 5th one correct. To do this we will simply multiply the probabilities of each individual event by each other.
Thus;
P(WWWWC) = (4/5) × (4/5) × (4/5) × (4/5) × (1/5) = 256/3125 ≈ 0.0819
P(WWWWC) = 0.0819
The value of the radical expression -8 + √20 when expanded and solved is -3.6, based on the given parameters
<h3>What are equivalent
expressions?</h3>
Equivalent expressions are different expressions that have equal values when evaluated and compared
<h3>How to approximate the radical expression?</h3>
The expression is given as:
-8 + √20
The above expression is a radical expression
So, we start by doing the following
Express 20 as 5 * 4
-8 + √20 = -8 + √(5 * 4)
Split the radical expression √(5 * 4)
-8 + √20 = -8 + √5 * √4
Evaluate the square root of 4 i.e. √4 = 2
-8 + √20 = -8 + √5 * 2
This gives
-8 + √20 = -8 + 2√5
Evaluate the square root of 5
-8 + √20 = -8 + 2 * 2.2
Evaluate the product of 2 and 2.2
-8 + √20 = -8 + 4.4
Evaluate the difference
-8 + √20 = -3.6
Based on the given parameters, the value of the radical expression -8 + √20 when expanded and solved is -3.6
So, the complete equation is:
-8 + √20 = -3.6
Read more about equations at:
brainly.com/question/2972832
#SPJ1
Answer:
y = x+2
Step-by-step explanation:
(x1,y1) is (-4,-2) and (x2,y2) is (2,4)
Slope intercept form is y = mx+b
m = slope
b = add on
Slope = 
Substitute numbers
Slope = 
Two negatives = one positive
Simplify
The slope is 1
We can substitute y, x, and the slope
4 = 2*1 + b
4 = 2+b
b = 2
Slope intercept form is y = mx+b
Answer is y = x+2
Hope this helps :)
