$\frac{20 - 80}{0 - 60 } = slope \: or the \: rate \: of \: \\ change \: \\ \\ \frac{ - 60}{ - 60} = 1$
It tells you that over these intervals the balloon is going at a constant speed.

4 0

3 years ago

Use the Binomial Theorem to expand each binomial (5x-4y)^3

jek_recluse [69]

You should know that:

(a+b)(a+b)(a+b)

=a(a+b)(a+b)+b(a+b)(a+b)

=a(a²+2ab+b²)+b(a²+2ab+b²)

=a³+2a²b+ab²+a²b+2ab²+b³

=a³+3a²b+3ab²+b³

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If a=5x and b=-4y

(5x+(-4y))³

=(5x-4y)³

=(5x)³+3(5x)²(-4y)+3(5x)(-4y)²+(-4y)³

=125x³+3(25x²)(-4y)+15x(16y²)-64y³

=125x³+75x²(-4y)+240xy²-64y³

=125x³-300x²y+240xy²-64y³

5 0

3 years ago

Please really need help on this please

Vika [28.1K]

0,1 0,7 I think I use to do these

8 0

3 years ago

What are the coordinates of Point X?<br> A. (3, –4)<br> B. (–3, –4)<br> C. (4, –3)<br> D. (4, 3)

Greeley [361]

Answer:

3, -4

Step-by-step explanation:

Hi I really hope this helps you, Please mark as brainliest!

8 0

3 years ago

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