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solniwko [45]
3 years ago
6

Find the slope between these two points!

Mathematics
1 answer:
Citrus2011 [14]3 years ago
4 0

Answer:

m =  \frac{d - b}{c - a}  \: where \: c \ne \: a

Step-by-step explanation:

We use the slope formula:

m =  \frac{y_2-y_1}{x_2-x_1}

The slope or gradient is not very difficult to calculate.

The given points are:

A(a,b) and B(c,d)

We substitute these points into the formula to get:

m =  \frac{d - b}{c - a}  \: where \: c \ne \: a

Note that this is also the same as:

m =  \frac{b - d}{a- c}  \: where \: c \ne \: a

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Step-by-step explanation:

Do the division first

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During a period of 80 minutes, a music station played 8 minutes of commercials. What is the ratio of music they played to commer
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Step-by-step explanation:

80 minutes.......8 minutes played commercials....that means (80 - 8) = 72 minutes played music

so the ratio of music to commercials is : 72/8 which reduces to 9/1...so the ratio is 9:1 <=== ur answer

** pay attention to the wording, because if it would have asked for the ratio of commercials to music, it would have been 8/72....ratio would be 1:9

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2 years ago
Devisibility rules for 3, 6, and 9
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Answer:

<u>★</u><u> </u><u>Divisibility</u><u> </u><u>rule</u><u> </u><u>for</u><u> </u><u>3</u><u> </u><u>-</u>

If the sum of all the digits divisible by 3 then the number is divisible by 3.

Here, we take an example for better understanding -

<u>Example</u><u> </u><u>1</u><u> </u><u>-</u> 3525

Add up the digits - 3 + 5 + 2 + 5

→ 15

As, 15 is divisible by 3. So, 3525 is a factor of 3.

★<u> </u><u>Divisibility</u><u> rule</u><u> </u><u>for</u><u> </u><u>6</u><u> </u><u>-</u>

A number is to be divisible by 6 , if the number is also divisible by 2 and 3.

<u>Exampl</u><u>e</u><u> </u><u>2</u><u> </u><u>-</u> 132

Add up the digits = 1 + 3 + 2 = 6

As, 6 is divisible by 2 and it's also divisible by 3. Then, 132 is a factor of 6.

★ <u>Divisibility</u><u> rule</u><u> for</u><u> </u><u>9</u><u> </u><u>-</u>

If the sum of all the digits is divisible by 9 then the number is divisible by 9. Just like we'd in 3.

<u>Example</u><u> </u><u>3</u><u> </u><u>-</u> 1052

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As, 17 is not divisible by 9. So, 1052 is also not divisible by 9.

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3 years ago
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