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3 years ago

the formula P=2I + 2w means that the perimeter of a rectangle is equal to twice the sum of its length and its width

Mathematics

2 answers:

natali 33 [55]3 years ago

7 0

What's the question?

grin007 [14]3 years ago

7 0

Answer:

Step-by-step explanation: simple Answer I got

I=p-2w over 2

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Given that OA = 2x + 9y, OB = 4x + 8y and CD = 4x - 2y, explain the geometrical relationships between the straight lines AB and

Step2247 [10]

Answer:

The geometrical relationships between the straight lines AB and CD is that they have the same slope

Step-by-step explanation:

Given

$OA = 2x + 9y$

$OB = 4x + 8y$

$CD = 4x - 2y$

Required

The relationship between AB, CD

Since AB is a straight line and O is the origin, then:

$AB = (c - a)x + (d - b)y$

Where:

$OA = ax + by$ ====> $OA = 2x + 9y$

$OB = cx + dy$ ====> $OB = 4x + 8y$

This implies that:

$a =2$ $b = 9$ $c = 4$ $d = 8$

So:

$AB = (c - a)x + (d - b)y$

$AB = (4 - 2)x + (8 - 9)y$

$AB = 2x -y$

So, we have:

$AB = 2x -y$

$CD = 4x - 2y$

Calculate the slope (m) of $AB\ and\ CD$

$m = \frac{Coefficient\ of\ y}{Coefficient\ of\ y}$

For AB

$m_1 = \frac{-1}{2}$

$m_1 = -\frac{1}{2}$

For CD

$m_2 = \frac{-2}{4}$

$m_2 = \frac{-1}{2}$

$m_2 = -\frac{1}{2}$

By comparison:

$m_1 = m_2 = -\frac{1}{2}$

This implies that both lines have the same slope

8 0

3 years ago

The wingspans of a common species of housefly are normally distributed with a mean of 5mm and a standard deviation of 0.5mm. Sup

Anuta_ua [19.1K]

Answer:

Approximately Normal

Step-by-step explanation:

Since the population is normally distributed, the sampling distribution of the sample mean will also be normally distributed, even when the sample size is small.

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2 years ago

Shirley is decorating the gym for a party. She has 5 rolls of blue streamer and 8 rolls of green streamer. If each roll of blue

never [62]

Answer: 1145 feets

Step-by-step explanation:

The total feet of streamer that Shirley have to decorate with will be the addition of the total roll of blue streamer plus the total roll of green streamer. This will be:

= 5(93) + 8(85)

= 465 feet + 680 feet

= 1145 feets of streamer.

is 93 feet long and each roll of

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3 years ago

Multiple choice please answer please

faust18 [17]

Answer:

15/17

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is the slope of the line y = 3?

bonufazy [111]

Answer:

slope = 0

Step-by-step explanation:

y = 3 is the equation of a horizontal line parallel to the x- axis.

Since it is parallel to the x- axis then slope = 0

5 0

3 years ago