All categories

3 years ago

PLZZZZ HELPPPP PROBABILITY!!!

Mathematics

2 answers:

finlep [7]3 years ago

8 0

Step-by-step explanation:

This event that's taking place is happening twice. The event is the mail getting delivered. It's happening two times. Luckily, you already know the probability of it happening once. Because it happens twice, you just square it. (0.9)^2. 0.81 chance of it happening in two consecutive days.

horsena [70]3 years ago

4 0

You make the exponent the amount of timeframe. for example since it is two consecutive days, it will be (0.90)^2. which is 0.81.

You might be interested in

Two roots of a 3-degree polynomial equation are 5 and -5. Which of the following cannot be the third root of the equation?

Pavel [41]

Answer:

5i and -5i

Step-by-step explanation:

Imaginary roots come in pairs, so the third root must be a real number. Therefore, neither 5i nor -5i can be the third root.

6 0

3 years ago

Read 2 more answers

Write an equation of the line that passes through the given points.<br> (-2,8) and (1, -1)

KIM [24]

/Answer:

Short Answer Type:

P1 - (-2,8)

P2 - (1,1)

Slope: (1 - 8) / (1 + 2)

=> -7/3

Therefore: 1 = -7/3 + c

=> 10/3 = c

<h2><u>Therefore equation: y = -7x/3 + 10/3</u> </h2>

6 0

3 years ago

HELP!!!!!! I believe its B but I am not sure! :(

n200080 [17]

Answer:

Step-by-step explanation:

When solving for x as an exponent, we need to use logarithms in order to undo the operation and rearrange the terms. We use log rules to bring down the exponent and solve. Logarithms are the inverse operations to exponents and vice versa. We have one special kind of logarithm called the natural logarithm whose base is e. We write it as ln. Since our base is e here, we will use the natural logarithm to rearrange and isolate x.

$e^{4x-1} =3$

We begin by applying the natural logarithm to each side.

$ln(e^{4x-1}) =ln(3)$

Log rules allow use to rearrange the exponent as multiplication in front of the log.

$(4x-1)ln(e) =ln(3)$

ln e as an inverse simplifies to 1.

$(4x-1)(1)=ln(3)$

We now apply the inverse operations for subtraction and multiplication.

$4x-1+1=1+ln(3)\\4x=1+ln(3)\\\frac{4x}{4} =\frac{1+ln3}{4} \\x =\frac{1+ln3}{4}$

Option A is correct.

5 0

3 years ago

The price of a sandwich is $2.50 more than the price of a smoothie, which is d dollars. What does the expression d +25 represent

kow [346]

Answer: D represents the price of a sandwich and a smoothie

4 0

3 years ago

PLEASE HELP QUICK ITS TIMED

juin [17]

Answer:

Step-by-step explanation:

I think what they are asking is to subtract the 3 tokens from 21 tokens he already has giving us 18. and since it says "Twice the number of tokens" I'm assuming you divide 2 from 18 giving you 9 tokens.

5 0

3 years ago