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1 year ago

Ty flipped a coin and counted how many times it landed on heads and how many times it landed on

Mathematics

1 answer:

lesya [120]1 year ago

6 0

<h3>Answer: 13/28</h3>

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Reason:

The table shows he got 26 heads out of 26+30 = 56 coin flips.

26/56 = (2*13)/(2*28) = 13/28 is the empirical or experimetnal probablity of getting heads.

Side note: 13/28 = 0.4643 = 46.43% approximately which is fairly close to 50%

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Malorie can work 10 math problems in 3 minutes.

Slav-nsk [51]

200
You divide 60 by 3 because there are 60 m minutes in 1 hour. You get 20.
You then multiply 10 by 20 and you get 200.
Hope this helps! :)

6 0

3 years ago

Read 2 more answers

Csc (2sin^-1(-12/13))<br> that is 2 times inverse sin of -12/13

german

Answer: $-\frac{169}{120}$

I'm assuming you mean this:

$cosec(2sin^{-1}(\frac{-12}{13}))$

Recall what the cosecant function represents. It is the reciprocal of a sine function, and is often written in this form:

$\frac{1}{sinx}$

So, using the sine relationship:

$cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2sin^{-1}(\frac{-12}{13}))}$

Let $u = sin^{-1}(\frac{-12}{13})$
$cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2u)}$
$= \frac{1}{2sinu \cdot cosu}$
$= \frac{1}{2sin(sin^{-1}(\frac{-12}{13})) \cdot cos(sin^{-1}(\frac{-12}{13}))}$
$= \frac{1}{\frac{-24}{13} \cdot \sqrt{1 - (\frac{-12}{13})^{2}}}$
$= \frac{1}{\frac{-24}{13}} \cdot \frac{1}{\sqrt{1 - \frac{144}{169}}}$
$= -\frac{13}{24} \cdot \frac{1}{\sqrt{\frac{25}{169}}}$
$= -\frac{13}{24} \cdot \frac{1}{\frac{5}{13}}$
$= -\frac{13}{24} \cdot \frac{13}{5}$
$= -\frac{169}{120}$

3 0

2 years ago

4.81 x 10^3) + (7.913 x 10^5)

qwelly [4]

(4.81 x 10^3) + (7.913 x 10^5)
(4810)+(791300) = 796,110 OR (79611 x 10)

5 0

2 years ago

3.4 m = cm help plezzzzz

AnnZ [28]

Answer:

thee answer shall be 3.4m = 340cm

6 0

2 years ago

HELP PLEASE-

NemiM [27]

Answer: Choice C

(4, 18)

=========================================

Explanation:

One point shown on the graph is (2,9)

If we double each x and y coordinate, then

2*2 = 4
9*2 = 18

We go from (2,9) to (4,18)

Plotting this point on the graph will be on the same line as the other points.

Or you could note that y/x = 9/2 = 18/4 = 4.5

8 0

2 years ago