What is the slope of the line the contains the points (-1,-1) and (3,15)?

Mathematics

2 answers:

attashe74 [19]3 years ago

7 0

The answer to this question is A

Nastasia [14]3 years ago

7 0

A.4
Hope it helps, good luck

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Without the use of a calculator, calculate 77^2−23^2.

stepan [7]

Answer:

5400

Step-by-step explanation:

4 0

3 years ago

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Simplify : (√x + √y ) (√x − √y) (x + y)(x2 + y2)

Ivan

$Solution, \mathrm{Expand}\::\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right)\left(x+y\right)\left(x^2+y^2\right):\quad :x^4-:y^4$

$Steps:$

$\mathrm{Expand}\:\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right):\quad x-y, =\left(x-y\right)\left(x+y\right)\left(x^2+y^2\right)$

$\mathrm{Expand}\:\left(x-y\right)\left(x+y\right):\quad x^2-y^2, =:\left(x^2-y^2\right)\left(x^2+y^2\right)$

$\mathrm{Expand}\:\left(x^2-y^2\right)\left(x^2+y^2\right):\quad x^4-y^4, =:\left(x^4-y^4\right)$

$\mathrm{Expand}\::\left(x^4-y^4\right):\quad :x^4-:y^4, =:x^4-:y^4$

The correct answer is <u><em> $x^4-y^4$ </em></u>

Hope this helps!!!

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3 years ago

A random walk on the 2-dimensional integer lattice begins at the origin. At each step, the walker moves one unit either left, ri

NNADVOKAT [17]

The 9 combinations that exist for two movements:

R,R
R,L
R,U *
L,R
L,L
L,U
U,R *
U,L
U,U

Walker would only be able to make it to (1,1) with only 2 of these combinations.

So if he were only allowed to make two movements, his chances of arriving at (1,1) would be 2/9.

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3 years ago

Giving 20 points please get it right

AVprozaik [17]

Answer:

Step-by-step explanation:

Leave the 5 , change division to multiplication and turn the fraction upside down.

5 × $\frac{2}{1}$ = 5 × 2 = 10