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son4ous [18]
3 years ago
6

Math work pls help :)​

Mathematics
1 answer:
AveGali [126]3 years ago
7 0

Answer:

History of mathematics

Several civilizations — in China, India, Egypt, Central America and Mesopotamia — contributed to mathematics as we know it today. The Sumerians were the first people to develop a counting system. Mathematicians developed arithmetic, which includes basic operations, multiplication, fractions and square roots. The Sumerians’ system passed through the Akkadian Empire to the Babylonians around 300 B.C. Six hundred years later, in America, the Mayans developed elaborate calendar systems and were skilled astronomers. About this time, the concept of zero was developed.

Step-by-step explanation:which includes basic operations, multiplication, fractions and square roots. The Sumerians’ system passed through the Akkadian Empire to the Babylonians around 300 B.C. Six hundred years later, in America, the Mayans developed elaborate calendar systems and were skilled astronomers. About this time, the concept of zero was developed.

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20 and 1/2 x 10 1/4 x 12
Andru [333]

Answer:

2521.5

Step-by-step explanation:

20.5 · 10.25 · 12

2521.5

5 0
3 years ago
The price of a calculater has decreased from $200 to $150. What is the percentage of decrease?
Ivanshal [37]

Answer:

25%

Step-by-step explanation:

200-150=50

50/200=0.25

have a nice day!

5 0
3 years ago
Please help me find BD
Tanzania [10]

9514 1404 393

Answer:

  14 units

Step-by-step explanation:

The angle bisector divides the sides proportionally, so you have ...

  (x+4)/8 = (2x+1)/12

  3(x +4) = 2(2x +1) . . . . . . multiply by 24

  3x +12 = 4x +2 . . . . . . . . eliminate parentheses

  10 = x . . . . . . . . . . . subtract (3x+2)

Then BD = x+4 = 10 +4.

The length of BD is 14 units.

_____

<em>Additional comment</em>

The "triangle" cannot exist, as the side lengths are shown as 8, 12, and 35. The long side is too long. Nice math; bad geometry.

8 0
2 years ago
A block in the shape of a cube has sides that are 2 over 1\2 inches long. what is the volume of the block????
Vlad1618 [11]
A cube has equal sides if they are 2÷ 1/2 each then L×W×H would be (2÷ 1/2)^3. To divide fractions we multiply the reciprocal.

2÷ 1/2 = 2/1 × 2/1 = 4

4×4 = 16×4= 64

answer is V = 64 inches cubed.
5 0
3 years ago
Assume the probability of having a boy or a girl is the same. What is the probability a family has three boys?
almond37 [142]
The probability of having a boy: 1/2

1/2(1/2)(1/2)=1/8

The probability of a family having three boys is 1/8.

Hope this helps!
3 0
3 years ago
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