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love history [14]
3 years ago
13

An aquarium is being filled at a rate of 2.5 inches per second. The equationLaTeX: y=2.5xy = 2.5 x is used to determine the heig

ht of the water after LaTeX: xx seconds. Find the domain and range of the situation if it takes 60 seconds to fill the aquarium.
Mathematics
1 answer:
Reika [66]3 years ago
3 0

Answer:

Step-by-step explanation:

Given the equation y = 2,5x

y is the height of the water

x is the time.

To get the range of values of the height at t = 60s, we will substitute x = 60 into the function

y = 2.5(60)

y = 150 in

Hence the range of the situation is [0, 150].

The domain will be all positive integers i.e xEZ

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Four hundred seventy of one thousand contestants were girls girls made up what fraction of the contestants?
pashok25 [27]

Answer:

The fraction is 470/1000, which can be simplified to 47/100, and that is 47%.

Step-by-step explanation:

Basically you take what is asked for and you divide it by the total amount.

470 is the amount of girls as contestants.

1000 is the total amount of contestants.

And that gives you the ratio 470/1000.

Hope this helped!

8 0
4 years ago
A line passes through the point (-8,7) and has a
zaharov [31]

Answer:

y = (-5/2)x + 27

Step-by-step explanation:

Use the point slope formula y = mx + b.

Replace m with -5/2, x with -8 and y with 7:

7 = (-5/2)(8) + b.  Find the y-intercept, b:

7 = -20 = b, or b = 27

The equation of this line is y = (-5/2)x + 27.

6 0
3 years ago
You want to buy 4 pens, each costing 27 cents. How many dollar bills should you take to the store? im not in college btw lol
USPshnik [31]

Answer:

108c so 2 dollar bills.

Step-by-step explanation:

5 0
3 years ago
A couple is planning to have three children. Each child is equally likely to be a boy or a girl. If this couple's plan is succes
schepotkina [342]

Answer:

The probability of having exactly two girls is 3/8 or 0.375

Step-by-step explanation:

Since the likelihood is equal, the probability of having a boy = probability of having a girl = 1/2

In written form;

P(g) = P(b) = 1/2

We use the Bernoulli approximation to know the probability of having two girls.

Mathematically, that would be;

3C2 P(g)^2 P(b)^1

Inserting the values , we have;

3 * (1/2)^2 * (1/2)

= 3 * (1/2)^3 = 3/8 = 0.375

3 0
3 years ago
HELP please.
Delvig [45]

Answer:

Q1: \frac{3}{4}

Q2: \frac{83}{100}

Step-by-step explanation:

Q1: 12 : 16 = 3 : 4 = \frac{3}{4}

Q2: 8.3 : 10 = \frac{83}{100}

3 0
3 years ago
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