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Aliun [14]
3 years ago
14

Trong một kỳ thi, sinh viên được phép thi 3 lần. Xác suất thi đỗ lần đầu là 0,8. Nếu lần

Mathematics
1 answer:
Ugo [173]3 years ago
7 0

Answer:

which language is this bro

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How many significant figures are there in the number 31.6901? A. 6 B. 4 C. 3 D. 5
Simora [160]
Significant figures are numbers after the decimal point, which have usually been rounded. There are four numbers after the decimal point, so there are 4 significant figures.

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5 0
2 years ago
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What is the volume of a right circular cone that has a height of 14.9 cm and a base with the circumference of 2.9 cm rounded to
xxMikexx [17]

Answer:

The answer to your question is  Volume = 3.30 cm³

Step-by-step explanation:

Data

Volume = ?

height = 14.9 cm

circumference = 2.9 cm

Process

1.- Calculate the radius

   circumference = 2πr

-Substitution

   2.9 = 2πr

-Solve for r

   r = 2.9/2π

   r = 1.45/π cm

2) Calculate the volume of the cone

   Volume = 1/3πr²h

-Substitution

   Volume = 1/3π(1.45/π)²(14.9)

-Simplify

   Volume = (1.04)(0.213)(14.9)

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5 0
3 years ago
Simplify<br><br>Square root of 50 over 2 times -4 + square root of 121
kobusy [5.1K]

Answer:

  -9

Step-by-step explanation:

  \sqrt{\dfrac{50}{2}}\cdot(-4)+\sqrt{121}=-4\sqrt{25}+11=-4\cdot5+11\\\\=-20+11=\boxed{-9}

Your calculator can help with this.

4 0
2 years ago
Write 5^3 x √5 as a single power of 5
MakcuM [25]
√5 = 5^(1/2)

Multiplying two number with the same base has as result a number with the same base and the sum of the exponents so:

1/2 + 3 = 7/2
which means
5^3 x 5^(1/2) = 5^(7/2)
5 0
2 years ago
I really need some help .............
Effectus [21]

Answer:

61

Step-by-step explanation:

add the number of minutes for each day and then divide that number by the number of days

35+60+65+60+85 =305

305 / 5 = 61

8 0
3 years ago
Read 2 more answers
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