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cestrela7 [59]
3 years ago
11

An aquarium measures 61 cm long, 30.5 cm wide, and 30.5 cm high. If the tank is only filled to 80% capacity with water, how much

water is needed for this tank?
Mathematics
1 answer:
Oksanka [162]3 years ago
7 0
11349.05 (and whatever unit of measurement it would be)

The volume is 56745.25, and 80% of that would be 45396.2. In order to find the 20%, or how much water you need, you would subtract 45396.2 from 56745.25 and that leaves you with 11349.05.
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What is the range of f(x)=4•0.5^x?
VikaD [51]

The range is the output, which would be the Y value.

The Y value would be calculated based on the input value for x.


any positive number raised to any value of x would be a positive number so 0.5^x would always be positive.

That would be multiplied by 4, which is a positive value, so the output ( Y value) would always be positive.


The range for this would be (0,∞)

6 0
3 years ago
Julia is standing 2 feet away from a lamppost. If she casts a shadow of 5 feet and the light makes a 20° angle relative to the g
givi [52]

Answer:

2.5477 feet

Step-by-step explanation:

Refer the image attached to understand my solution.

BC = height of lamppost.

DE = Julia

AD = shadow of Julia

BD = 2 feet.      AD = 5 feet

BA = BD + AD

       = 2 + 5 = 7 feet

In ΔABC

tan 20° = \frac{BC}{BA}  = \frac{BC}{7}

BC = 7 * tan 20°

BC = 2.5477 feet

SO the height of lamppost = 2.5477 feet

5 0
2 years ago
2 * 3 - 2y equals 5 ​
bearhunter [10]

Answer:

5.5

Step-by-step explanation:

2 times 3 is 6 then but to the other side so plus 6 then You have 2y=11

then you dived it by two so 11 dived by 2 and you get 5.5      

3 0
3 years ago
Need answers please !!!!
kow [346]

inital height is 2 meters

Step-by-step explanation:

5 0
3 years ago
In a shipment of new books for the library,5/12 of the books were poetry and 2/5 were biographies. The remainder of the books in
mr Goodwill [35]
5/12(poetry) + 2/5(biographies) = 25/60 + 24/60 = 49/60
60/60 - 49/60= 11/60
11/60 are the remainder of the books in the shipment.
3 0
3 years ago
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