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3 years ago

Mechanika

Mathematics

2 answers:

Elena L [17]3 years ago

5 0

Answer:

Manau, kad tai D.

Shkiper50 [21]3 years ago

4 0

A Becaus tehe I just found a pic lol I just found it out again so it

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How much carbon dioxide will you prevent from entering the atmosphere in one year, if you replace a 100-watt light bulb with a C

Afina-wow [57]

Answer:

280000lb

Step-by-step explanation:

In this question, we shall be calculating the amount of carbon iv oxide prevented from entering the atmosphere.

Generally we know that 1kwh produces 1.37 lbs of Carbon iv oxide in the atmosphere

Now, using a 100 watt light bulb daily for 8 hours, for a year, the amount of Carbon iv oxide produced will be;

100 * 1.37 * 8 * 365 = 40040 lb

Using a 30 watt CFL for 8hrs/ day for a year, we have;

30 * 1.37 * 8 * 365 = 120012 lb

Now calculating the amount of CO2 prevented, we have 40040 - 120012 = 280028 lb = 280000 after rounding up

3 0

3 years ago

NEED HELP PLS PLS PLSSSSSSSSSSSS

frutty [35]

Pretty sure it’s 4. Hope this helped :)

8 0

3 years ago

The pentagon below has an area of 8.3 square centimeters and a side of 2.2. What is the approximate length of the apothem? A.0.4

nalin [4]

Answer:

C. 1.5 cm

Step-by-step explanation:

A pentagon is a polygon with 5 sides.

The formula for the area of a regular polygon is

$A=\frac{1}{2}ap$

where a is the apothem and p is the perimeter. The perimeter is found by multiplying the number of sides of the figure by the length of 1 of those sides:

5(2.2) = 11

Now we have everything we need to solve for the length of the apothem.

$8.3=\frac{1}{2}a(11)$

Begin by multiplying both sides by 2 to get rid of the fraction, so

16.6 = 11a Divide both sides by 11 to get

a = 1.5090909 or

C. 1.5 cm

3 0

3 years ago

Read 2 more answers

Geometry !!! Pls help it’s timed!!

DENIUS [597]

Answer:

the answer is the first choice .

6 0

3 years ago

At the start of a mission, international spy James withdrew $5,000 in Cairo. In Istanbul, he withdrew half of the remaining mone

lord [1]

Answer:

Initial Amount at the start of the mission $=\$20000$

Step-by-step explanation:

Let initial amount $=x$

In Cario James withdrew $\$5000$ .

Remaining Amount $=x-5000$

In Instanbul he with drew half of the remaining amount so half of the remaining amount will be left.

$\frac{1}{2}\times(x-5000)=7500\\\\x-5000=15000\\\\x=20000$

8 0

4 years ago