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3 years ago

What is (2,1) and (8,9) slope?

Mathematics

2 answers:

kompoz [17]3 years ago

8 0

Answer:

4/3 or 1 1/3

Step-by-step explanation:

Slope formula given two points is attached in a picture.

1) Plug in the points into the slope formula:

(9-1)/(8-2)

2) Complete the subtraction:

8/6

3) Simplify the fraction:

4/3

4) {OPTIONAL} Convert to mixed number:

1 1/3

yulyashka [42]3 years ago

6 0

Answer: slope is 1 1/3

Y2-y1

Over

X2-x1

9-1

8-2

8/6 is 1 1/3

Step-by-step explanation:

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The double number line below shows the approximate number of kilograms in a certain number of pounds:

kirill [66]

Answer:

4.5

Step-by-step explanation:

We can simplify ratios to one to find the answer

4 pounds is about 2 kilograms

2 pounds is about 1 kilogram

1 pound is about half a kilogram

9 pounds x 0.5 = 4.5

8 0

3 years ago

A rectangle has length (3x-8) and width (2x-7) cm .Write down and simplify an expression for the perimeter of the rectangle. So

tatuchka [14]

Answer:

The perimeter of the rectangle is equal to $(10x-30)\ cm$

Step-by-step explanation:

Let

L-----> the length of the rectangle

W ----> the width of the rectangle

we know that

The perimeter of rectangle is equal to

$P=2(L+W)$

we have

$L=(3x-8)\ cm\\W=(2x-7)\ cm$

substitute

$P=2((3x-8)+(2x-7))$

$P=2(5x-15)$

$P=(10x-30)\ cm$

8 0

3 years ago

What is the mean absolute deviation of 26 43 48 29 16 30

Serhud [2]

The mean absolute deviation of a number set is the average distance between each value and the mean. This is obtained by finding the mean of the set, determining the absolute value difference between each number, and the mean and calculating the average of these differences.
The mean of the set is ( 26 + 43 + 48 + 29 + 16 + 30 ) / 6 = 32 ;
 the absolute value difference between each number:
/ 26 - 32 / = 6 ; / 43 - 32 / = 11 ; / 48 - 32 / = 16 ; / 29 - 32 / = 3 ; / 16 - 32 / = 16 ;
/ 30 - 32 / = 2 ;

the mean absolute deviation of 26 43 48 29 16 30 is ( 6 + 11 + 16 + 3 + 16 + 2 ) / 6 = 9 ;

8 0

3 years ago

The height that a ball bounces varies directly with the height from which it is dropped. A certain ball bounces 30 cm when dropp

Akimi4 [234]

The ball will bounce 72 cm high if dropped from a height of 120 cm

Solution:

Given, The height that a ball bounces varies directly with the height from which it is dropped.

A certain ball bounces 30 cm when dropped from a height of 50 cm.

We have to find how high will the ball bounce if dropped from a height of 120 cm?

Now, according to given information,

When dropped from 50 cm ⇒ bounces 30 cm

Then, when dropped from 120 cm ⇒ bounces "n" cm

Now by Chris cross method, we get,

$\begin{array}{l}{n \times 50=30 \times 120} \\\\ {\rightarrow n=\frac{30 \times 120}{50}} \\\\ {\rightarrow n=\frac{3600}{50}} \\\\ {\rightarrow n=72}\end{array}$

Hence, the ball bounces 72 cm high.

5 0

3 years ago

Simplify b10/b^2 ..............................................

Amanda [17]

B10/36 i think, if its not what youre looking for let me know

4 0

3 years ago

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