In which quadrant is the point (19, -4)?

Answers

Answer 1

Answer: mathway.compopular-problems
Trigonometry392301

i hope that website can help u solve

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I always get terribly confused on these, please show work?

Answers

Hello!

Question 1
A equilateral triangle is a triangle where all three sides are equal to each other and all three internal angles are equal to each other.
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Question 2
You put in 2 for m and 121 for n

$\sqrt[2]{121}$

This means that you are looking for the square root of 121

The answer is 11
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Hope this helps!

you are finding the sqaure root of 121 which is 11

(-2/3)/(-1/2) = ? I dont know how to work this out.

Answers

I believe the answer is 1/3

I’m If Linda age is decreased by 36, the result is twice Linda’s age. how old is linda?

Answers

Answer:

x=lindas age

3 times lindas age (3 time x or 3x) is decreased by 36 (-36), the result (=) is twice lindas age (2 times x or 2x)

now we have

3x-36=2x

subtract 2x

x-36=0

add 36

x=36

age=36

Step-by-step explanation:

What is 1284 rounded to the nearest 100?

Answers

1284 rounded to the nearest would be 1300

1300 because it is 84 so you round up to 300

A local flower shop is selling $1 raffle tickets and is donating all proceeds to the children's hospital. They sold 5,500 tickets and plan to give away 20 flower arrangements valued at $70 and 20 gift certificates valued at $25. Find the expected value of purchasing a raffle ticket.Round to the nearest cent. Do not round until the final calculation.

Answers

The expected value of purchasing a raffle ticket is -0.647.

What is the Expected Value of a Probability & Statistical Analysis?

The expected value is derived in probability analysis by the multiplication of each of the potential possibilities by the likelihood that each result will occur and then adding all of those values together.

Using the formula below, we can calculate the expected value as follows:

$\mathbf{ E(X)= \sum^(n)_(i=1)X_i P(X_i)}$

However, the probability (Pr) of each event can be categorized as follows:

Pr (to win a flower arrangement ) $\mathbf{=(20)/(5500)}$

Pr (to gift a certificate) $\mathbf{=(20)/(5500)}$

Pr (no win) ) $\mathbf{=(5500 - 20 - 20)/(5500)=(5460)/(5500)}$

Thus;

$\mathbf{E(X) = 70((20)/(5500) * 25 (((20)/(5500) )- 1((5460)/(5500) )}$

$\mathbf{E(X) =-0.647}$

Learn more about finding the expected value of a probability here:

brainly.com/question/9931880

Answer: The expected value of purchasing a raffle ticket would be $0.3449.

Step-by-step explanation:

Since we have given that

Number of tickets = 5500

Number of flower arrangements = 20

Number of gift certificates = 20

So, Probability that wining $70 at flower arrangement = $(20)/(5500)=(1)/(275)$

Probability that wining $25 at gift certificates = $(20)/(5500)=(1)/(275)$

So, Expected value of purchasing a raffle ticket would be

$70* (1)/(275)+25* (1)/(275)\n\n=0.254+0.0909\n=\$0.3449$

Hence, the expected value of purchasing a raffle ticket would be $0.3449.

Find three solutions for y=-2x-1

Answers

Answer:

(1, -3)

(2, -5)

(3, -7)

Step-by-step explanation:

Randomly choose three values for "x". Substitute each of them separately into the formula to find the "y". Then write the solution as an ordered pair (x, y).

I will choose x=1, x=2 and x=3.

When x=1:

y = -2x - 1

y = -2(1) - 1

y = -2 - 1

y = -3

(1, -3)

When x=2:

y = -2x - 1

y = -2(2) - 1

y = -4 - 1

y = -5

(2 , -5)

When x=3:

y = -2x - 1

y = -2(3) - 1

y = -6 - 1

y = -7

(3, -7)

Three solutions for y = -2x - 1 are (0, -1), (2, -5), and (-3, 5), where x and y are related by this linear equation.

The equation y = -2x - 1 represents a linear relationship between x and y. To find three solutions for this equation, you can choose different values for x and calculate the corresponding values of y. Here are three solutions:

Solution 1:

Let x = 0:

y = -2(0) - 1

y = 0 - 1

y = -1

So, one solution is (0, -1).

Solution 2:

Let x = 2:

y = -2(2) - 1

y = -4 - 1

y = -5

So, another solution is (2, -5).