The formula of the distance between two points:
We have the points (-1, -10) and (-12, -3). Substitute:
Answer: d ≈ 13.0
Which letter has line symmetry? Answer options with 5 options Q L M J P
1 answer:
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Option c : 9 is the answer.
Explanation:
The expression is
We need to determine the subtracted value of the expression.
From the expression we can see that the expression contains two negative signs.
To simplify the expression, we know that, When we multiply two negative numbers then the product is always positive.
This means
Thus, the expression can be written as
Adding the two numbers, we get,
Thus, the value of the expression is 9.
Hence, Option c is the correct answer.
Answer:
There is a 50% probability that its total life will exceed 20,000 miles.
Step-by-step explanation:
To solve this question, we use the following formula:
In which P(A|B) is the probability of A happening, given that B has happened, is the probability of A and B happening, and P(B) is the probability of B happening.
In this problem, we want:
The probability of the total life of the car battery exceeding 20,000 miles, given that it exceeded 10,000 miles.
is the probability of exceeding 20,000 and 10,000 miles. It is the same as the probability of exceeding 20,000 miles(If it exceeded 20,000 miles, necessarily it will have exceeded 10,000 miles). So
P(B) is the probability of exceeding 10,000 miles. So
So
There is a 50% probability that its total life will exceed 20,000 miles.