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2 years ago

F(x)=-2x+4 find domain and range

Mathematics

1 answer:

Arturiano [62]2 years ago

3 0

Domain: All real numbers

Range: All real numbers

Since the function is linear it is a continuous straight line meaning that the domain and range are all real numbers.

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A line segment of length k is divided into 3 equal parts what is the distance between midpoints of the first and third segments

anastassius [24]

Line segment of length k is divided into 3 equal parts.

so first segment is 0-k/3 and third segment is 2/3k-k

so mid-pt of 1st = k/6 and 3rd = 5/6k

so the distance in between = 5/6k-k/6 = 4/6k = 2/3k

4 0

3 years ago

does anybody have an easy way of finding the factors of a number without spending a long time on it? (a number like 288)

Natali [406]

There are quite a few websites that have factor lists. Also, if you can find the biggest number that goes into it, then all of the factors of that number go into it as well.

4 0

3 years ago

What is the mean height 81,88,69,65,87

Sauron [17]

Answer:

Step-by-step explanation:

add them all together and and divide by how many they are -thats the meaning of the mean

81+88+69+65+87=390

390divide by 5=78

i divided by 5 becasue there are 5 numbers

4 0

3 years ago

Simplify the equation <br><br> ( -3x )^0 / 2<br><br> if possible please explain

nalin [4]

(-3x)^0/2

Simplify

= 1/2

I hope that's help !

5 0

3 years ago

Read 2 more answers

On a 10-item test, three students in Professor Hsin's advanced chemistry seminar received scores of 2, 5, and 8, respectively. F

Inessa [10]

Answer:

For this distribution of test scores, the standard deviation is equal to the square root of 9

D) 9

Step-by-step explanation:

We need to know the standard deviation formula:

$S=\sqrt{\frac{sum(x-Am)^2}{n-1} }$ (1)

Where:

S: Standard deviation

sum: Summation

x: Sample values

Am: Arithmetic mean

n: Number of terms, in this case 3

Now, we need to know the arithmetic mean of the sample values: 2, 5 and 8

$Am=\frac{2+5+8}{3} = 5$

To know the standard deviation we need to have the summation of each term minus the arithmetic mean squared.

$(x-Am)^2$ of each term:

$(2-5)^2=9\\(5-5)^2=0\\(8-5)^2=9$

Now, we can find the standard deviation:

$S=\sqrt{\frac{9+0+9}{3-1} } \\S=\sqrt{\frac{18}{2} } \\S=\sqrt{9}$

The standard deviation is equal to the square root of 9

4 0

3 years ago

Read 2 more answers