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3 years ago

Diana got 0.85 of the questions correct on her assessment. What fraction

Mathematics

1 answer:

mars1129 [50]3 years ago

3 0

Answer:

85100

Step-by-step explanation:

the decimal 0.85 can be converted to the fraction 85100 , by defintion of a decmial.

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If pq=3 and pq+rs=5, then 3+rs=5 is an example of the _________.

Mrrafil [7]

<span>This is an example of the substitution property of equality, meaning that if pq = 3, you may substitute 3 for pq in another related equation. So if pq+rs=5 is true, then 3+rs=5 is true as well.</span>

8 0

3 years ago

The 10th term of an arithmetic proression is 68 and the common difference is 7 find the first term of the sequence

leonid [27]

Answer:

Step-by-step explanation:

first term + (10-1)7=68

first term= 68- 63=5

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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.

8 0

3 years ago

A bookkeeper is posting to the accounts of a manufacturer of coffee. Their accounting software deals with weights in kilograms,

natita [175]

Question says that a bookkeeper is posting to the accounts of a manufacturer of coffee. Their accounting software deals with weights in kilograms, but the company’s handwritten accounts state that they have produced 21,560 pounds (lbs.) coffee this month.

Now we have to find about what entry in kilograms should they put into their spreadsheet.

Basically they want to convert 21560 pounds into kilogram.

We know that 1 pound = 0.453592 Kilograms

Then 21560 pound = 0.453592*21560 = 9779.44352 Kilogram

Hence final answer is approx 9779.44 Kilogram.

3 0

3 years ago

One thumbtack weighs 0.25 ounces. Once ounce is approximately equals to 28 grams. Which of the following is closet to the weight

Nataly_w [17]

Answer:

Is about 7 grams.

Hope this helps! :)

6 0

4 years ago