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jeka94
3 years ago
5

Eight balls numbered from 1 to 8 are placed in an urn. One ball is selected at random. Find the probability that it is

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
6 0

Answer:

\frac{7}{8}

Step-by-step explanation:

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Find the inequality represented in the graph.
Digiron [165]

Answer: y > -1/2x + 2

Step-by-step explanation: first, in order to find the inequalities you should find the gradient by choosing two points from the line and you should you the formula m=y2-y1/x2-x1 to find the gradient.

Next, you should find the y-intercept in order to complete the inequality it can be easily found as the y-intercept is the place where the line crosses the y axis

Then you create your equation { y = -1/2x + 2 } and then if above the line is shaded then it is {> greater than} and if below the line is shaded then it should be {< less than}

(so you should replace the equation with the lesser or greater sign according to the way the graph is shaded)

7 0
2 years ago
Integral Calculation
Tatiana [17]

Answer:

\frac{4}{3(e^2+1)}

Step-by-step explanation:

We want to evaluate:

\int\limits^1_{-1} {\frac{x^2+1}{e^2+1} } \, dx

This is the same as:

\frac{2}{e^2+1} \int\limits^1_{0} {x^2+1} \, dx

We integrate to obtain:

\frac{2}{e^2+1} (\frac{x^3}{3}+x)|_0^1

We evaluate to obtain:

\frac{2}{e^2+1} (\frac{1^3}{3}+1)=\frac{4}{3(e^2+1)}

8 0
3 years ago
Chọn ngẫu nhiên 15 sản phẩm từ 1 lô hàng có tỉ lệ sản phẩm loại 1 là 10%. Tìm xác suất để trong 15 sản phẩm chọn được có:
lara31 [8.8K]

Answer:

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5 0
3 years ago
it took Bob 55 minutes to clean the garbage. How many seconds did it take bob?there are 60 seconds in one minute please help me
defon

Answer:

3,300 sec

Step-by-step explanation:

7 0
3 years ago
Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?
user100 [1]

Answer:

36 i think

Step-by-step explanation:

4 0
3 years ago
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