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Alla [95]
3 years ago
13

Patti's Pet Palace has an 85-gallon fish tank. When it needs to be cleaned, it can be drained at a rate of 2 gallons per minute.

Assuming the tank was full, and x represents the number of minutes the tank has been draining, which of the following equations represents the amount of water in the tank after x minutes?
A.
y = 85x - 2
B.
y = 2x + 85
C.
y = 2x - 85
D.
y = 85 - 2x
Mathematics
1 answer:
MAVERICK [17]3 years ago
3 0
B y=2x+85the answer for it
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214 people used a public swimming pool. $1.50 for kids and $2.25 for adults. The receipt totaled to $390 How many children and h
zysi [14]

Answer:the number of kids that used the public pool that day is 122

the number of adults that used the public pool that day is 92

Step-by-step explanation:

Let x represent the number of kids that used the public pool that day.

Let y represent the number of adults that used the public pool that day.

214 people used a public swimming pool. This means that

x + y = 214

1.50 for kids and $2.25 for adults. The receipt totaled to $390. This means that

1.5x + 2.25y = 390 - - - - - - - - - -1

Substituting x = 214 - y into equation 1, it becomes

1.5x

1.5(214 - y) + 2.25y = 390

321 - 1.5y + 2.25y = 390

- 1.5y + 2.25y = 390 - 321

0.75y = 69

y = 69/0.75 = 92

Substituting y = 92 into x = 214 - y, it becomes

x = 214 - 92 = 122

5 0
2 years ago
I need some help finding the volume of a sphere with a diameter of 18.6cm. The website says the answer I got from my calculator
lutik1710 [3]

Answer:

V ≈ 3367.6 cm³

Step-by-step explanation:

The volume (V) of a sphere is calculated as

V = \frac{4}{3} πr³ ( r is the radius )

Here D = 18.6 , then r = 18.6 ÷ 2 = 9.3 , so

V = \frac{4}{3} × 3.14 × 9.3³

   = \frac{4}{3} × 3.14 × 804.357

   = \frac{4(3.14)(804.357)}{3}

   ≈ 3367.6 cm³ ( to the nearest tenth )

6 0
2 years ago
william made 1/2 a gallon of lemonade to divide equally among 3 people. how much lemonade will they get?
tatuchka [14]
Hoi..
1/6 gallon all u need to do is divide
6 0
3 years ago
Read 2 more answers
I really need help with this pls help me
Agata [3.3K]
I think it is the first one -2
6 0
2 years ago
Read 2 more answers
I need help can someone give me answers
marishachu [46]

Answer:

Step-by-step explanation:6 type

5/25=1/5=20%

1-1/5=4/5=80%

7 0
2 years ago
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