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3 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!!

Mathematics

1 answer:

hammer [34]3 years ago

5 0

I think you got confused with the 50 and 90.
Read my NOTE there it will surely help you answering other questions like this

You might be interested in

How do you find the range and domain??

stepan [7]

Answer:

In general, we determine the domain of each function by looking for those values of the independent variable (usually x) which we are allowed to use. (Usually we have to avoid 0 on the bottom of a fraction, or negative values under the square root sign).

The range of a function is the spread of possible y-values (minimum y-value to maximum y-value)

Substitute different x-values into the expression for y to see what is happening. (Ask yourself: Is y always positive? Always negative? Or maybe not equal to certain values?)

Make sure you look for minimum and maximum values of y.

Draw a sketch! In math, it's very true that a picture is worth a thousand words.

Step-by-step explanation: hope this helps <3

8 0

3 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

State the the roots of y=x^2+8x

Likurg_2 [28]

Answer:

The roots of the given equation are x = 0 and x = -8.

General Formulas and Concepts:

Algebra I

Terms/Coefficients

Factoring/Expanding

Quadratic Equations

Solving quadratic equations

Step-by-step explanation:

Step 1: Define

Identify.

y = x² + 8x

Step 2: Find Roots

[Quadratic] Factor: y = x(x + 8)
[Quadratic] Set up [Solve]: 0 = x(x + 8)
[Quadratic] Define: x = 0, -8

∴ the roots of the quadratic equation y = x² + 8x is equal to 0 and -8.

---

Topic: Algebra I

8 0

3 years ago

Find the degree of the monomial. 4g

gladu [14]

Answer:

The degree is 1

Step-by-step explanation:

Step 1: Find the degree

4g has a degree of 1 because the g is to the power of 1.

Answer: The degree is 1

Example: $4x^3$

Since the x is to the 3rd power, that means that the degree is 3

6 0

3 years ago

PLEASE HELP ASAP!!!!

spin [16.1K]

It is easy! I got you! So if Gavin earned $25 more then Seiji and the total of money they got over the summer is $425, all you have to do is subtract, so 425- 25= 400. Seiji earned s and Gavin earned g.

3 0

4 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!!​

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!!