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2 years ago

Identify two pairs of vertical angles.*

Mathematics

1 answer:

xxMikexx [17]2 years ago

3 0

Answer- A

1 and 4, 6 and 7

Explanation- vertical angles are each of the pairs of opposite angles made by two intersecting lines.

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Under the normal curve, approximately what percent of scores fall between and -1 to +1 standard deviations around the mean?

prohojiy [21]

According to the empirical rule, roughly 68% of the scores fall between z = -1 and z = 1

You can use a calculator to get a more approximate answer. If you have a TI calculator, you can use the "normalcdf" function to type in normalcdf(-1,1)

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3 years ago

I give brainliest please help

Furkat [3]

It’s the 31 hope this helps you

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2 years ago

Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2

r-ruslan [8.4K]

Answer:

The value of given expression is $\frac{21}{128}$ .

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

$q=1-p=1-\frac{1}{2}=\frac{1}{2}$

The given expression is

$C(n,x)p^xq^{n-x}$

It can be written as

$^nC_xp^xq^{n-x}$

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

$^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}$

$\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}$

$\frac{7!}{2!5!}(\frac{1}{2})^{2+5}$

$\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}$

$21(\frac{1}{2})^{7}$

$\frac{21}{128}$

Therefore the value of given expression is $\frac{21}{128}$ .

7 0

2 years ago

curtis threw 15 darts at a dart board and 40% of his darts hit the bulls eye how many darts missed the bulls eye

ioda

Answer:

Step-by-step explanation:

40 -100 = 60 and 60 percent of 15 is 9

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3 years ago

I need help pls help me

agasfer [191]

Answer:

Step-by-step explanation:

2ft=24in

The first day 24(1/6)=4in fell

The second day 24(7/12)=14in fell

The third day 24-4-14=6in fell

6 0

2 years ago

Read 2 more answers