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Lisa [10]
3 years ago
8

How do i solve 20m-2m

Mathematics
2 answers:
solniwko [45]3 years ago
7 0

You say to yourself  "Self !  This is easy, and I refuse to let it scare me ! 
I know that 20 dollars minus 2 dollars leaves 18 dollars. 
And I know that 20 cows minus 2 cows leaves 18 cows. 
And I know that 20 puppies minus 2 puppies leaves 18 puppies. 
So it's obvious to me that 20 of anything minus 2 of the same thing
is always 18 of them. 
It doesn't matter whether the things are hairbows, goldfish, cars,
CDs, books, or 'x', 'y', or 'z'. 
So 20m minus 2m is definitely 18m."

Ierofanga [76]3 years ago
5 0
Just - the numbers and put the m on the endof it...20m-2m=18m
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Read 2 more answers
WILL MARK BRAINLIEST!!! Find the fifth roots of 243(cos 240° + i sin 240°).
Snowcat [4.5K]

Answer:

<h2>3(cos 336 + i sin 336)</h2>

Step-by-step explanation:

Fifth root of 243 = 3,

Suppose r( cos Ф + i sinФ) is the fifth root of 243(cos 240 + i sin 240),

then r^5( cos  Ф  + i sin  Ф )^5 = 243(cos 240 + i sin 240).

Equating equal parts and using de Moivre's theorem:

r^5 =243  and  cos  5Ф  + i sin  5Ф = cos 240 + i sin 240

r = 3 and  5Ф = 240 +360p so Ф =  48 + 72p

So Ф = 48, 120, 192, 264, 336  for   48 ≤ Ф < 360

So there are 5 distinct solutions given by:

3(cos 48 + i sin 48),

3(cos 120 + i sin 120),

3(cos 192 + i sin 192),

3(cos 264 + i sin 264),

3(cos 336 + i sin 336)

6 0
3 years ago
6 The table below shows the federal income tax rate for wages earned for single adults.
Zielflug [23.3K]

Answer:

F) 35,625

Step-by-step explanation:

Walter is in the 25% range since $47,500 is in-between 36,901 to 89,359

25% = 0.25

47,500 * 0.25 = 11,875

47,500 - 11,875 = $35,625

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3 years ago
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