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lbvjy [14]
3 years ago
10

I really want to learn this pls help!!

Mathematics
1 answer:
katen-ka-za [31]3 years ago
4 0

Answer:

Step-by-step explanation: pretty much u have to understand what pie =3.14 and the diameter and Radius I learned this in 3 days radius is the middle of a circle to a side and diameter is the same but all the way across

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Question 9 (3 points)
Lilit [14]

Answer:

Precambrian period

Step-by-step explanation:

Since the Great oxidation period = 2.4 Billion years ago era = Precambrian period.

Micro-fossils attributed to cyanobacteria are abundant during the Proterozoic that came later 2,5 billion years ago and ended 540 million years ago,

7 0
3 years ago
Does anybody want to talk?
aleksandrvk [35]

Answer:

yes please

finals are killing me and i'm homeschooled so this is just hell

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
“Choosing is Refusing” means individuals face an opportunity cost with each decision they make. True or False?
denpristay [2]
The answer is true! 


Hope this helps!
If another answer comes in, mark me as brainliest!
6 0
3 years ago
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Anyone for 10 points??!!!<br> The question is in the image<br> Thanks But answer ASAP!
ivanzaharov [21]
Bottom Side Surface Area:

(24 inches + 24 inches + 24 inches) * (30 inches)

= 72 inches * 30 inches

= 2160 inches squared


--------

Top Side Surface Area:

24 inches * 30 inches

= 720 inches squared

--------

Length of the diagonal (D) which needs to be measured:

*Use Pythaogras's theorem...

24^2 + 10^2 = D^2

D=√(24^2+10^2)

D=26 inches

------------

Measure the surface area of the two ramps:

26 inches * 30 inches * 2

= 1560 inches squared

-----------

Total surface area:

2160 inches squared + 720 inches squared + 1560 inches squared

= 4440 inches squared

---------

Answer:

4440 square inches
8 0
4 years ago
The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at
AVprozaik [17]

Answer:

We suppose that a is the old price in cents

the total cost of 9.20 $ equals 920 cents

so we have 20 liters bought with the old price (a) and 10 liters with the new price (a + 2). This is translated into this equation where a is the old price therefore our quest to be answered

20 xa + 10 x (a + 2) = 920 (cents)

20 xa + 10 xa + 20 = 920

30 xa + 20 = 920

30 xa = 920 - 20

30 xa = 900

a = 900: 30

a = 30 (cents)

therefore the old price for 1 liter of petrol is 30 cents

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

8 0
3 years ago
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