Write an equation of a line perpendicular to

Mathematics

1 answer:

Bess [88]2 years ago

4 0

Answer:

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A square room in Amber's home has an area of 128 square feet. Which is the best estimate of one side length of the room?

Nitella [24]

A best estimate would be 32

6 0

2 years ago

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Please help. Marika is training for a race.

Anika [276]

Let's call n the number of days Marika's been training for the race, and $a_n$ the distance she runs on the nth day in meters. After the first day, when n = 1, she runs 100 meters, so

$a_1=100$

On the second day, she runs an additional 4 meters, on the third day, another 4, and so on. Here's what that looks like mathematically:

$a_2=100 + 4\\a_3=100 + 4 + 4\\a_4=100+4+4+4$

It would be easier to write this continued addition as multiplication, in which case those same equations would look like

$a_2 = 100 + 4(1)\\a_3 = 100 + 4(2)\\a_4=100+4(3)$

Notice that, in every case, the number 4 is being multiplied by is 1 less than n. We could even write for our first term that $a_1=100+4(0)$ . In general, we can say that