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s344n2d4d5 [400]
3 years ago
10

HELP!! 25 PTS!!

Mathematics
2 answers:
LuckyWell [14K]3 years ago
5 0

Answer:

20?

Step-by-step explanation:

i think im not sure try it if im wrong 1 star me if im write 5 star me

Evgen [1.6K]3 years ago
5 0
Let’s define our variables: x represents child passes and y represents adult passes.

Now, let’s make some equations with the provided information.

First, let’s deal with the money

12x+15y=4140

Next, the amount of passes

x+y=300

Then, take the second equation, and subtract y over.

x=300-y

Now, we can substitute the equation above in for x in the first equation

12x+15y=4140
12(300-y) +15y =4140

Distribute the 12

3600-12y+15y=4140

Combine like terms, then subtract 3600 over

3y=540

Divide by 3 on both sides

y=180

So, 180 $15 entry passes were sold
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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
Dahasolnce [82]

Answer:

Volume, V = 3367.6 cm³

Step-by-step explanation:

Given the following data;

Diameter = 18.6 cm

Radius = diameter/2 = 18.6/2 = 9.3 cm

Pie, π = 3.14

To find the volume of the sphere;

Mathematically, the volume of a sphere is given by the formula;

Volume \; of \; a \; sphere = \frac {4}{3} \pi r^{3}

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