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3 years ago

Use the Pythagorean theorem to answer 4 5 and 6

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

4 0

Okay, the formula for this would be

$a^{2}$ + $b^{2}$ = $c^{2}$

Lets start with 4.

$7^{2}$ + $25^{2}$ = $c^{2}$

Simplify.

49 + 625 = $c^{2}$

674 = c

c = $\sqrt{674}$

c = 25.96

Which is ≈ 26

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For 9 and 9A, find the slope of the line

djverab [1.8K]

For this case we have that by definition, the slope of a line is given by:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}}$

Where:

$(x_ {1}, y_ {1})$ and $(x_ {2}, y_ {2})$ are two points through which the line passes.

Question 1:

According to the image, we have the following points:

$(x_ {1}, y_ {1}) :( 2, -6)\\(x_ {2}, y_ {2}): (- 6,5)$

Substituting we have:

$m = \frac {5 - (- 6)} {- 6-2} = \frac {5 + 6} {- 8} = \frac {11} {- 8} = - \frac {11} {8}$

Thus, the slope is: $- \frac {11} {8}$

Question 2:

According to the image, the line goes through the following points:

$(x_ {1}, y_ {1}): (- 1,2)\\(x_ {2}, y_ {2}) :( 2, -2)$

Substituting we have:

$m = \frac {-2-2} {2 - (- 1)} = \frac {-4} {2 + 1} = \frac {-4} {3} = - \frac {4} {3}$

Thus, the slope is: $- \frac {4} {3}$

Answer:

Slope 1: $- \frac {11} {8}$

Slope 2: $- \frac {4} {3}$

3 0

3 years ago

Hellpppppppppppppppppppppppppppppppppppppppp

natulia [17]

Answer:

._. -_- -.- .-. --__--

Step-by-step explanation:

8 0

2 years ago

I really need help<br> I have a 25 in math<br> I really need help

kupik [55]

Answer:

I don't understand the question

8 0

2 years ago

Find the difference of 18.6 and 5.24.*

Charra [1.4K]

Answer:

13.36

Step-by-step explanation:

18.60 - 5.24

=>13.36

5 0

3 years ago

Please solve it I will give you 30 points

Aloiza [94]

Answer:

1. (2x^2+x-1)

Step-by-step explanation:

expanding (2x^2-1)^2. multiplying (x-2) (1-2x)

= 4x^2-4x+1. = x-2x^2-2+4x

= -2x^2+5x-2

(4x^2-4x+1-2x^2+5x-2)

=2x^2+x-1

8 0

3 years ago

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