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4 years ago

Please help :))))))))

Mathematics

2 answers:

alexgriva [62]4 years ago

4 0

LETTER D.

Count from the origin to the left/right for the x-value, and up/down for the y-value.
The ordered pair is always (x, y)

mr Goodwill [35]4 years ago

3 0

The answer is D (- 3,- 2), (2,- 1)

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Simplify -3/4 divided by 2/-8

kozerog [31]

Answer: 3

Step-by-step explanation:

(-3/4)/(-2/8)=(-3/4)(-8/2)=(-3/4)(-4)=3

3 0

4 years ago

A 76 foot piece of rope is cut into three pieces where one piece is three times longer than the other two equal pieces. How long

jonny [76]

Let the length of one of the shorter pieces be $\ell$ . Then, we know that two of the pieces are that length, and the third piece is $3 \ell$ . Since these are all pieces of a rope, all we need to do to figure out the lengths is add all those together, solve for $\ell$ , and then plug that back in to the desired lengths:

$3 \ell + \ell + \ell = 76 ft.$
$5 \ell = 76 ft.$
$\ell = 15.2 ft.$

Shorter pieces: $\ell = \bf 15.2 ft.$
Longer piece: $3 \ell = \bf 45.6 ft.$

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3 years ago

Can someone do this? <3

dalvyx [7]

here!

and here’s a link if you want to understand how to do it!

https://www.khanacademy.org/math/algebra-home/alg-intro-to-algebra/alg-manipulating-expressions/a/combining-like-terms-reminder

4 0

2 years ago

Read 2 more answers

Finding the domain of a rational function. <br><br> F(x)=x/x^2-4

sleet_krkn [62]

If the equation is x/(x^2-4) then I will solve it here

it's rational
therefor we can't have any impossibles like dividing by zero and square root of -1 an d stuff

f(x)=x/(x^2-4)

we know that the denomenator cannot be equal to zero so the numbers you cannot user are the numbers that will make the bottom number zero
so x^2-4=0
x^2=4
x=-2 or 2

so x cannot be -2 or 2, but it can be all other numbers so
domain=all numbers except -2 and 2

7 0

4 years ago

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How can you use an equilateral triangle to find the lengths of the sides in a 30-60-90 triangle?

irina [24]

Answer:

Step-by-step explanation:

1) divide equilateral tri from the middle you will get two 30-60-90 triangles

2) by using pythagorean law & trigimintory, you will get two unknowns (height and side length) and two functions

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3 years ago