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3 years ago

A coin is flipped 80 times. It lands tails 47 times. What is the P (Heads)? percentages pls

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

5 0

Answer:

%41.25

Step-by-step explanation:

80 - 47 = 33

33 divided by 80

convert to percentage

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Perform the indicated operation. 4/11 ÷ 4/9 9/11 16/99 1 2/9

Natalka [10]

Evaluate
Exact Form:
9/11

Decimal Form:
0.81∞

Answer: 9/11
Hope this helps! :)

6 0

3 years ago

Scientists found that the body of a male consists of 3.58×10^-4 lbs of zinc. What is the number written in standard notation?

notka56 [123]

Answer:

The number is 0.000358 lbs.

Step-by-step explanation:

Scientists found that the body of a male consists of $3.58 \times 10^{-4}$ lbs of zinc.

This is a scientific way of writing a number.

For, example 0.0023, a number in normal or standard notation can be scientifically written as $2.3 \times 10^{- 3}$ .

So, in our case, the number is $3.58 \times 10^{-4}$ lbs and we have to write this number in standard notation.

Then the number is 0.000358 lbs. (Answer)

4 0

3 years ago

Fatima wants to find the value of sine theta, given cotangent theta = four-sevenths. which identity would be best for fatima to

Olin [163]

By using trigonometric relations, we will find that:

sin(θ) = (√33)/7 = √(33/49)

<h3>How to find the value of the sine?</h3>

Remember that for a right triangle, we have the relations:

cos(a) = (adjacent cathetus)/(hypotenuse)

sin(a) = (opposite cathetus)/(hypotenuse).

Here we know that:

cos(θ) = 4/7

Then we can say that we have a triangle with an adjacent cathetus of 4 units and a hypotenuse of 7 units. Now we need to find the other cathetus.

opposite cathetus = √(7^2 - 4^2) = √33

Then we can write:

sin(θ) = (√33)/7 = √(33/49)

If you want to learn more about trigonometry.

brainly.com/question/8120556

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3 0

2 years ago

Given <br><img src="https://tex.z-dn.net/?f=%20log_%7B2%7D%28x%29%20%20%3D%20%20%5Cfrac%7B3%7D%7B%20log_%7Bxy%7D%282%29%20%7D%20

Naily [24]

Answer:

$\displaystyle y = x^{-\frac{2}{3}}$

Step-by-step explanation:

<u>Logarithms</u>

Some properties of logarithms will be useful to solve this problem:

1. $\log(pq)=\log p+\log q$

2. $\displaystyle \log_pq=\frac{1}{\log_qp}$

3. $\displaystyle \log p^q=q\log p$

We are given the equation:

$\displaystyle \log_{2}(x) = \frac{3}{ \log_{xy}(2) }$

Applying the second property:

$\displaystyle \log_{xy}(2)=\frac{1}{ \log_{2}(xy)}$

Substituting:

$\displaystyle \log_{2}(x) = 3\log_{2}(xy)$

Applying the first property:

$\displaystyle \log_{2}(x) = 3(\log_{2}(x)+\log_{2}(y))$

Operating:

$\displaystyle \log_{2}(x) = 3\log_{2}(x)+3\log_{2}(y)$

Rearranging:

$\displaystyle \log_{2}(x) - 3\log_{2}(x)=3\log_{2}(y)$

Simplifying:

$\displaystyle -2\log_{2}(x) =3\log_{2}(y)$

Dividing by 3:

$\displaystyle \log_{2}(y)=\frac{-2\log_{2}(x)}{3}$

Applying the third property:

$\displaystyle \log_{2}(y)=\log_{2}\left(x^{-\frac{2}{3}}\right)$

Applying inverse logs:

$\boxed{y = x^{-\frac{2}{3}}}$

7 0

3 years ago

Help me with number 3 please

Harlamova29_29 [7]

The answer would be 22%

6 0

3 years ago