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Reil [10]
2 years ago
10

Suppose n(U) = 150, n(A) = 35, and n(B) = 89. (a) If n(A U B) = 90, find n(A n B).

Mathematics
1 answer:
avanturin [10]2 years ago
4 0

Answer:

34

first of all use formula:

n(AUB)=n(A)+n(B)-n(AnB)

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3 0
3 years ago
A bill to landscape your yard is $720. The Materials cost $375 and the labor is $34.50 per hour. Write and solve an equation to
Igoryamba

Answer:

Hey what'sup?

You need to dig a little in, for what it's actually meaning

Here the total is 720 right?

Which came from the materials and the labors work in hourly basis

So it's like

Cost of the material + no of hours = bill

We don't know what the no of hours are, so let's assume it as 'x'

Hence the required equation is

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Therefore x=345/35 =9.8

Therefore they worked for 9.8 hours or approximately 10 hours

Peace out

8 0
2 years ago
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Grace [21]
Isolate the variable by dividing both sides by 6:
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The solution is t=24

Good luck!
8 0
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