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3 years ago

Please help need today

Mathematics

1 answer:

umka2103 [35]3 years ago

4 0

Answer:

$50.27cm^3$

Step-by-step explanation:

Given the dimensions of the cylinder as d=4cm and h=4cm, its volume can be calculated using the formula:

$V=\pi r^2 h\\\\=\pi \times (4/2)^2\times 4\\\\=16\pi cm^3=50.27cm^3$

Hence the volume of the cylinder is 50.27 $cm^3$

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The sum of 3 times a number and 5 is 2 times the number plus 15. what is half the number?

saul85 [17]

Define x:
Let the sum be x

Construct the equation:
<span>The sum of 3 times a number and 5 is 2 times the number plus 15.
</span>→ 3x + 5 = 2x + 15

Solve x:
3x + 5 = 2x + 15 | Equation
x + 5 = 15 | Take away 2x from both sides
x = 10 | Take away 5 from both sides

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3 years ago

In a probability experiment, Karen flipped a coin 84 times. The coin landed on heads 36 times. What percentage of the coin flips

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Answer:

57.1%

Step-by-step explanation:

We know that a coin has only two sides, heads or tails. Therefore if of the 84 times, 36 times he fell in heads, the other times he fell in tails.

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Therefore to calculate the percentage that fell in tails, it would be the ratio between the number of times it fell in tails and the total number of experiments:

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Which means that 57.1% of the times the coin was thrown fell into tails.

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3 years ago

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4 years ago

A fair coin is flipped three times. Events A and B are defined as: A: there are at least two consecutive heads somewhere in the

Vaselesa [24]

Answer:

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Step-by-step explanation:

Coin flipped 3 times has following outcomes, of heads 'H' & Tails 'T'

HHH , TTT , HTT, THT , TTH , THH , HTH , HHT = total outcomes

P (A) = 2 consecutive heads , P (B) = atleast one tail

P (A) = 2 outcomes ( HHH , HHT , THH ) / total 8 outcomes = 3 / 8

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3 years ago

563*410 whats the partial product

Rashid [163]

   || 500 |    60    | 3
====||============================
400 ||200,000 | 24,000    | 1,200
-------||----------------------------------------------
10 || 5,000    | 600 |    30
-------||------------------------------------------------
0 ||    0 |    0    |    0
====================================
TOT || 205,000 | 24,600 | 1,230 ====> 230,830

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