What is the probability that 19 tosses of a fair coin will show 8 heads?

1 answer:

8 0

This can be solved by using the binomial distribution:
$P(8\ heads)=19C8\times(\frac{1}{2})^{8}\times(\frac{1}{2})^{11}=0.144$

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Consider the following "generic rectangle" where the area of each region is given. Write equivalent

marta [7]

Answer:

sum: 3x² -4x -4
product: (x -2)(3x +2)

Step-by-step explanation:

The areas of four regions are given. We can simply add them to find the sum. To express them as a product, we need to look at common factors.

The total of the given area expressions is ...

3x² +2x -6x -4 = 3x² -4x -4 . . . . sum

<h3>Product</h3>

Extending the table to show common factors of each row and column, we have ...

$\begin{array}{c|c|c|}&3x&2\\\cline{1-3}x&3x^2&2x\\\cline{1-3}-2&-6x&-4\\\cline{1-3}\end{array}$

Since each cell of the table is the product of the corresponding common factors, we can write the area as the product ...

(x -2)(3x +2) . . . . product

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2 years ago

Which number is represented by point E on the graph?

zavuch27 [327]

Answer:

It'll be -0.25

Step-by-step explanation:

Notice how it is to the left of zero, anything to the left of zero is negative. With that in mind, we can eliminate A. The half mark between 0 and -1 represents 0.50, and since it goes by quarters, the E is at the first quarter, which is 0.25. Hopefully this helps!

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3 years ago

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The temperature was -2F. Dropped 9F. What is the temperature after it dropped 9F

xz_007 [3.2K]

-11 degrees F I hope this helps

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How much interest is earned on $2,700 in one year if it is invested at 3%?

Natalka [10]

$81 is earned by investing $2700 in one year at 3%.