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3 years ago

Math question. Help! Photo attached

Mathematics

1 answer:

mariarad [96]3 years ago

8 0

Slope of the line joining the 2 points is 1

Step-by-step explanation:

The formula for finding the slope of the line passing through 2 (x_{1} ,y_{1} ) points and (x_{2} ,y_{2} ) is (y_{2} -y_{1} )/(x_{2} -x_{1} )

The 2 given points are (0,-2) and (5,3)

substituting this in the above formula we get,

Slope = \frac{(3-(-2))}{(5-0)} = \frac{5}{5} = 1

Hence slope of the line joining the 2 points is 1

You might be interested in

How to completely factor 4x²-2x

schepotkina [342]

Answer:

2x(2x-1)

Step-by-step explanation:

$4 {x}^{2} - 2x \\ \\ = 2x(2x - 1) \\$

8 0

3 years ago

A pencil costs .27 and a pen costs .32. You buy six pencils and the total cost is 4.18 How many pens did you buy?

skelet666 [1.2K]

Answer:

8 pens

Step-by-step explanation:

<h2><u>Finding the number of pens bought </u></h2>

pencil costs 0.27

pen costs 0.32

6 * pencils + x pens = 4.18

6 * 0.27 + x * 0.32 = 4.18

1.62 + 0.32x = 4.18

0.32x = 4.18 - 1.62

0.32x = 2.56

x = 2.56/0.32

x = 8

<u>hence 8 pens were bought </u>

8 0

4 years ago

A statistics student would like to estimate the average age of students at her college. She would like to be 99% confident that

agasfer [191]

Answer:

Step-by-step explanation:

Given that a statistics student would like to estimate the average age of students at her college.

Population std dev =2.5years

For 99% , Z critical = ±2.59

Margin of error = $±2.59*\frac{2.5}{\sqrt{n} } \\= \frac{±6.475}{\sqrt{n} } =0.5$

Simplify to get

$\sqrt{n} =12.95$

n = 167.70

n=168

She must survey 168 people

7 0

3 years ago

Simplify each expression 3x+5+7x

stepan [7]

Answer:

10x+5

Step-by-step explanation:

You would add 3x and 7x

you would leave 5 alone because it has no x thus it can not be added to the 3x and 7x

6 0

3 years ago

Read 2 more answers

On an average day a horse might drink 50l a sheep might drink 4l and a chicken might drink 200ml. How much water would a farm wi

aksik [14]

50 L X 3 = 150 L (water value for horses)
4 L X 15 = 60 L (water value for sheep)
200 mL X 12 = 2,400 mL or 2.4 L (water value for chickens)
Add them all together.
150 + 60 + 2.4 = 212.4 L of water is used daily

3 0

3 years ago