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Igoryamba
3 years ago
15

This is for union and intersection. I need help.

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
6 0

Problem 11) Start with set U = {1,2,3,4,5} and cross off 1,2,3 to be left with A' = {4,5}. We basically erase everything found in set A. You have the correct answer. Nice job.

Problem 12) Start with U = {1,2,3,4,5} and erase '5' to be left with {1,2,3,4}. So B' = {1,2,3,4}. You are correct here as well.

I can't help with the other problems since either letters, numbers or symbols are missing. Please make a new post and provide those updates.

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Can someone help me with this question?
Anon25 [30]
1/10 x 90  I think that's the answer



4 0
3 years ago
Read 2 more answers
A large mixing tank currently contains 350 gallons of water, into which 10 pounds of sugar have been mixed. A tap will open, pou
Marysya12 [62]

Answer

Let t be number of minutes since tap is opened

water is increased by 20 gallons of water per minute.

sugar increase rate of 3 pounds per minute

water :- W(t) = 350 + 10 t

sugar :- S(t) = 10 + 3 t

concentration

C(t) = \dfrac{S(t)}{W(t)}

at t = 15 minutes

C(15) = \dfrac{S(15)}{W(15)}

C(15) = \dfrac{10 + 3\times 15 }{350 + 10\times 15}

C(15) = 0.11

at beginning t = 0 minutes

C(0) = \dfrac{S(0)}{W(0)}

C(0) = \dfrac{10 + 3\times 0}{350 + 10\times 0}

C(0) = 0.0286

C(15) > C(0)

hence, concentration is increasing as time is passing.

3 0
3 years ago
1 hat cost $12
Ivan

Answer:

he bought 6 hats.

Step-by-step explanation:

im just gonna go through this 1 at a time. starting at 1.

12 + (14x9) = 138

(12x5)+(14x5) = 130

(12x4)+(14x6) = 132

(12x8)+(14x2) = 124

(12x6)+(14x4) = 128

6 0
3 years ago
A painter can paint 350 square feet in 1.25 hours. What is the painting rate per square feet per hour?
Andrei [34K]

Answer:

280

Step-by-step explanation:

350÷5 will give you quarters. 350÷50=70. 70x4=280

5 0
3 years ago
Need help ASAP! Directions in picture ;)
Len [333]

Answer:

<h2>112°</h2>

Step-by-step explanation:

Angle 8 will also be 112° because both of them( Angle 2 and Angle 8) are exterior alternate angles and exterior alternate angles are always equal.

So Angle 8 = 112°

6 0
2 years ago
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