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3 years ago

3.8,4.2,5.3,x; mean 4.8

2 answers:

6 0

Hello!

I would assume we are solving for x, so lets try to understand what we need to do here.

to find the mean, you add all the numbers together and divide by how many number sets there are.

so in this case: (3.8+4.2+5.3+x)/4

so what I did, was go in reverse

(4.8*4)-3.8-4.2-5.3=5.9

so x must be 5.9

I hope this helps, and have a nice day!

Free_Kalibri [48]3 years ago

3 0

Answer: 5.9

Step-by-step explanation:

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AlexFokin [52]

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3 years ago

A 2000 gallon fish aquarium can be filled by water flowing at a constant rate in 10 hours. When a decorativve rock is placed in

Elza [17]

Answer:

The volume of the rock is 13.368 cubic feet.

Step-by-step explanation:

The volume of the rock ( $V_{r}$ ), measured in gallons, is equal to the volume of the fish aquarium without the decorative rock ( $V'$ ) minus the volume of the fish aquarium with the decorative rock ( $V''$ ), both measured in gallons.

Since the water flow is at constant rate, the volume of the rock is expressed by the following equation:

$V_{r} = V' - V''$

$V_{r} = \dot V \cdot (\Delta t_{1}-\Delta t_{2})$ (1)

Where:

$\dot V$ - Flow rate, measured in gallons per hour.

$\Delta t_{1}$ - Filling time of the fish aquarium without the decorative rock, measured in hours.

$\Delta t_{2}$ - Filling time of the fish aquarium with the decorative rock, measured in hours.

And the flow rate is:

$\dot V = \frac{2000\,gal}{10\,h}$

$\dot V = 200\,\frac{gal}{h}$

The flow rate is 200 gallons per hour.

If we know that $\dot V = 200\,\frac{gal}{h}$ , $\Delta t_{1} = 10\,h$ and $\Delta t_{2} = 9.5\,h$ , then the volume of the rock is:

$V_{r} = \left(200\,\frac{gal}{h}\right)\cdot (10\,h-9.5\,h)$

$V_{r} = 100\,gal$

$V_{r} = 13.368\,ft^{3}$

The volume of the rock is 13.368 cubic feet.

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3 years ago

When 59,527 is divided by 23, the quotient is 2,588 R ____

Katyanochek1 [597]

Answer: the answer is 59,527 is divided by 23, the quotient is 2,588 R 3

the answer is 3 or remainder 3

Step-by-step explanation: brainlest please

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3 years ago

The volume of a cube is 125mm3. What is the length of its side?

Anastaziya [24]

Answer:

Step-by-step explanation:

All the edges of a cube have the same length, and the volume of a cube is the length of an edge taken to the third power. So the length of the edge of a cube with a volume of 125 is 5.

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3 years ago

Read 2 more answers

Sarah needs 3 feet of fabric for a project she is working on, but the store only sells the fabric in meters. One meter of fabric

Anna35 [415]

Answer:

$1.10

Step-by-step explanation:

The cost of one meter of fabric is $1.20.

Given that 1 ft = 0.305 meters

Hence, 1 meter = $\frac{1}{0.305}$ ft = 3.278 ft