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puteri [66]
3 years ago
7

If mark gets 41 out of 55 questions on a test what equation would he use to determine the percent correct

Mathematics
2 answers:
Reil [10]3 years ago
5 0

Answer:

A

Step-by-step explanation:

dalvyx [7]3 years ago
5 0

Answer:

(41 / 55) 100

Step-by-step explanation:

41 / 55 because he got 41 out of 55 correct.

Then to make it into a percentage you mutiple by 100!

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There are approximately 113 million TVs in the United States. Each uses, on average, 76 W of power and is turned on for 6.3 hour
ioda

Answer:

76 W *\frac{1kW}{1000 W}= 0.076 kW

0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}

113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh

And finally we can convert this into money like this:

54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6

So they spent every day approximately in total $ 4815291.6 dollars

Step-by-step explanation:

For this case we can convert the average power into Kw like this:

76 W *\frac{1kW}{1000 W}= 0.076 kW

Now on average we know that one person use on average this power over 6.3 hours per day so then we have the following consumption rate:

0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}

And now we know the total population so then the total consumption per day would be:

113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh

And finally we can convert this into money like this:

54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6

So they spent every day approximately in total $ 4815291.6 dollars

6 0
3 years ago
Read 2 more answers
Angle of elevation is 40. If I’m 30 ft from base of a tree what is height of tree
PSYCHO15rus [73]
Height of tree is given by the distance multiplied by the tangent of the angle of elevation:
Height = 30*tan(40) = 30(0.8391)=25.17 ft

6 0
3 years ago
The curved surface area of a cylinder is one third of its total surface area and the height is 5
frosja888 [35]

Answer:

Diameter of cylinder = 12 cm

Step-by-step explanation:

Given:

Height of cylinder = 5 cm

Total surface area of cylinder = 3 x [Curved surface area of a cylinder]

Find:

Diameter of cylinder

Computation:

Total surface area of cylinder = 3 x [Curved surface area of a cylinder]

πr²h = 3[2πrh]

πr²h = 6πrh

Radius of cylinder = 6 cm

Diameter of cylinder = 2 x Radius of cylinder

Diameter of cylinder = 2 x 6

Diameter of cylinder = 12 cm

3 0
2 years ago
Peter needs 20 meters of wood for his backyard. The nursery only sells
Kisachek [45]

Answer:

A

Step-by-step explanation: 20 x 3.28 is 65.6 round it up its 66

8 0
3 years ago
A square pyramid is 6 feet on each side. The height of the pyramid is 4 feet. What is the total area of the pyramid?
Nitella [24]

Answer:

Option C

Step-by-step explanation:

96ft2

3 0
3 years ago
Read 2 more answers
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