Which equation represents a line that passes through (0,–8) and (–5,

icang [17]

Answer:

If the earth didn't have a tilt, then we would only have one season which would most likely correspond to spring or autum.

Step-by-step explanation:

We would also expirience a mini summer when the earth is closest to the sun and we would expeirience a mini winter when the earth is farthest from the sun. Every where on the Earth would have a 12 hour sunlight days. It would still be warm at the equator and cold at the poles.

[I hope this answered your question ᓚᘏᗢ]

5 0

2 years ago

Read 2 more answers

1) A traditional die is a cube with each of its six sides representing the numbers from 1 to 6. Mr. Dicey customized a die by re

liraira [26]

Answer:

1) $\frac{2}{5}$

2) 49.225

3) $\frac{7}{2}$

Step-by-step explanation:

1) To find the expected value of the dice we can use the following equation:

$E(x)=x_{1}*P(x_{1})+x_{2}*P(x_{2})+...+x_{n}*P(x_{n})$

So in our problem the values x will be: 1/1, 1/2, 1/3, 1/4, 1/5 and 1/6 and the probavility for all values is 1/6 so the expected values will be: $E(x)=(\frac{1}{1} *\frac{1}{6}) +(\frac{1}{2} *\frac{1}{6}) +(\frac{1}{3} *\frac{1}{6})+(\frac{1}{4} *\frac{1}{6})+(\frac{1}{5} *\frac{1}{6})+(\frac{1}{6} *\frac{1}{6})$

$E(x)=0.167+0.083+0.056+0.042+0.033+0.028=0.409\approx \frac{2}{5}$

2) To find the variance of the expected values we can use the equation:

$Var(x)=\frac{\sum_{i=1}^{n}(x_{i}-\overline{x})^{2} }{n}$

So for our problem will be:

$Var(x)=\frac{(3-10.5)^2+(4-10.5)^2+(17-10.5)^2+(18-10.5)^2}{4}$

$Var(x)=\frac{56.25+42.25+42.25+56.25}{4}$ $Var(x)=\frac{196.9}{4}=49.225$

3) To find the expected value of the dice we can use the following equation:

$E(x)=x_{1}*P(x_{1})+x_{2}*P(x_{2})+...+x_{n}*P(x_{n})$

So in our problem the values x will be: 1, 2, 3, 4, 5 and 6 and the probavility for all values is 1/6 so the expected values will be: $E(x)=(1*\frac{1}{6}) +(2 *\frac{1}{6}) +(3 *\frac{1}{6})+(4 *\frac{1}{6})+(5 *\frac{1}{6})+(6 *\frac{1}{6})$

$E(x)=0.17+0.33+0.5+0.67+0.83+1=3.5\approx \frac{7}{2}$

7 0

3 years ago

Jake buys a fruit smoothie and a protein bar for $5.90. Kobe buys 2 fruit smoothies and 4 protein bars. He pays $16.80. What i

Andrei [34K]

Answer:

Fruit smoothie: $3.4

Protein bar: $2.5

Step-by-step explanation:

Let x represent cost of fruit smoothie and y represent cost of protein bar.

We have been given that Jake buys a fruit smoothie and a protein bar for $5.90. We can represent this information in an equation as:

$x+y=5.90...(1)$

$x=5.90-y...(1)$

We are also told that Kobe buys 2 fruit smoothies and 4 protein bars. He pays $16.80. We can represent this information in an equation as:

$2x+4y=16.80...(2)$

Upon substituting equation (1) in equation (2), we will get:

$2(5.90-y)+4y=16.80$

$11.80-2y+4y=16.80$

$2y=16.80-11.80$

$2y=5$

$y=\frac{5}{2}=2.5$

Therefore, each protein bar costs $2.5.

Upon substituting $y=2.5$ in equation (1), we will get:

$x=5.90-2.5=3.4$

Therefore, each fruit smoothie costs $3.4.

8 0

4 years ago

PLEASE HELP! 15 POINTS AND FIRST PERSON TO ANSWER GETS BRAINLIEST!!!

Natalija [7]

Answer:

This is a function because each x value has a different y value. If one of x values would of had two different y values then it would of not have been a function

Step-by-step explanation:

6 0

3 years ago

A square has one<br> side that measures<br> 6 inches. What is<br> the perimeter of<br> the square?

MariettaO [177]

Answer:

24 inches

Step-by-step explanation:

a square has 4 equal sides. if one side is 6, the rest of the sides are also six. perimeter is all the sides added. so 6+6+6+6, or 6*4, equals 24 inches as perimeter.

4 0

3 years ago

Which equation represents a line that passes through (0,–8) and (–5,–23)?