Answer:
X = -20
Step-by-step explanation:
X = -2(6+4)
^ add 6 and 4 together first because they are in parentheses
-2(10)
^ this parenthesis means you want to multiply -2 and 10
because 2 x 10 = 20
that must mean -2 x 10 = -20
therefore, the value of X is -20
X= -20
Answer:6 ft
Step-by-step explanation:
Hello! The question simplified is 4x + 14. This is because when you have a negative symbol in front of the numbers you need to distribute, you change the numbers inside into the opposites, and then multiply by -1. When you do this, you get 3 + 4x + 5 + 6. When you combine like terms, you get 4x + 14. The answer is B: 4x + 14.
Answer:
63 in²
Step-by-step explanation:
Area of a triangle = 1/2 × base × height
Given:
- base = 14 in
- height = 9 in
Substitute the given values into the formula:
⇒ area = 1/2 × 14 × 9
= 63 in²
Answer:
14.6% probability that a randomly chosen person will test positive
Step-by-step explanation:
We have these following probabilities:
10% probability that a randomly selected person has the disease.
If a person has the disease, 92% probability of testing positive.
100-10 = 90% probability that a person does not have the disease.
If a person does not have the disease, 100-94 = 6% probability of testing positive.
What is the probability that a randomly chosen person will test positive
92% of 10% or 6% of 90%.
Then
p = 0.92*0.1 + 0.06*0.9 = 0.146
14.6% probability that a randomly chosen person will test positive