3 years ago

The product of the slopes of perpendicular lines is always

Mathematics

1 answer:

kicyunya [14]3 years ago

5 0

<span>The product of the slopes of perpendicular lines is always equal to -1

Hope this helps!</span>

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(-2) + (3 - 7)<br> (-1) * (-2)

valentinak56 [21]

Answer:

-6
2

Step-by-step explanation:

$( - 2) + ( 3 - 7)$

$- 2 + (3 - 7)$

$- 2 + - 4$

$- 2 - 4$

$\boxed{\green{ = - 6}}$

◇◇•◇◇

$( - 1) \times ( - 2)$

$1 \times 2$

$\boxed{\green{= 2}}$

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3 years ago

25 The library has an empty bookcase with 4 shelves. Each shelf can hold 23 chapter þooks. If the library has 117 new chapter bo

bixtya [17]

Answer:

25 chapter books

Step-by-step explanation:

117 - (23×4)

[23×4=92]

.°. 117 - 92 = 25

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3 years ago

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Assume that each circle shown below represents one unit. Express the shaded amount as a single fraction and as a mixed number.

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Answer:

one fraction 17/5

mixed number: 3 2/5

Step-by-step explanation:

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3 years ago

The times of the runners in a marathon are normally distributed, with a mean of 3 hours and 50 minutes and a standard deviation

balu736 [363]

Answer: 0.16

Step-by-step explanation:

Given that the run times provided are normally distributed ;

Mean(x) of distribution = 3 hours 50 minutes

Standard deviation(s) = 30 minutes

The probability that a randomly selected runner has a time less than or equal to 3 hours 20 minutes

3 hours 20 minutes = (3 hrs 50 mins - 30 mins):

This is equivalent to :

[mean(x) - 1 standard deviation]

z 1 standard deviation within the mean = 0.84

z, 1 standard deviation outside the mean equals:

P(1 - z value , 1standard deviation within the mean)

1 - 0.8413 = 0.1587

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3 years ago

Given: 3 − 2(x + 4) = 13 prove: x = −9

Brums [2.3K]

Answer:

I hope this helps:))

Step-by-step explanation:

4 0

3 years ago

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