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4 years ago

13

Flip a coin 25 times and keep track of the results. What is the experimental probability of landing on tails? What is the theore

tical probability of landing on heads or tails?

1 answer:

Trava [24]4 years ago

6 0

Answer:

you must flip a coin 25 times and record it on a table for experimental. Theoretical would be 50% chance ( showing working)

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“Please help!!” **I WILL GIVE BRAINLIEST!**<br><br> -MUST EXPLAIN ANSWER-

irina [24]

Answer:

d 4843.75

Step-by-step explanation:

Marco is 45 so the premium is 38.75 per 1000 of life insurance.

He wants 125000

We divide 125000/1000 = 125

He want 125 units at 38.75

125*38.75 =4843.75

His insurance will cost 4843.75 per year

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3 years ago

Does anyone know this?

goldenfox [79]

Answer:

x¹=-6 x²=0

Step-by-step explanation:

Substitute y =0

Swap sides

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Split into possible cases

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4 years ago

Write the equations for 74,25a n d 49

schepotkina [342]

7425 ? 49
and = + in math
74250 + 49

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4 years ago

Read 2 more answers

Simplify 2/5x-3y-1/5x-11y=?

Karo-lina-s [1.5K]

The answer would be 10x8 !

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3 years ago

For where it says "choose" is either is/is not or are/are not

OverLord2011 [107]

Answer:

IS NOT; ARE NOT

Step-by-step explanation:

Given: $\begin{bmatrix} \frac{1}{4} & \frac{1}{4}\\ \\-1 & \frac{-1}{2} \end{bmatrix}$

and $A = \begin{bmatrix} \frac{1}{4} & \frac{1}{4} \\\\ -1 & \frac{-1}{2} \end{bmatrix}$

We say two matrices $A$ and $B$ are inverses of each other when $AB = BA = I$ where $I$ is the identity matrix.

$I = \begin{bmatrix} 1 & 0\\ 0 & 1 \end{bmatrix}$

So, for $X$ and $A$ to be inverses of each other, we should have $AX = XA = I$ .

Let us calculate $XA$ .

$\begin{bmatrix} -2 & -1 \\ 8 & 2 \end{bmatrix}$ $\begin{bmatrix} \frac{1}{4} & \frac{1}{4} \\\\ -1 & \frac{-1}{2}\end{bmatrix}$ $=$ $\begin{bmatrix}\frac{1}{2} & 0 \\0 & 0 \end{bmatrix}$

This is clearly not equal to the identity matrix. So we conclude that the matrices are not inverses of each other.

5 0

3 years ago