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3 years ago

PLZ PLZ HELP ME I NEED THIS FOR ONE OF MY FIANLE ASSIGNMENTS OF THE YEAR AND WHOEVER ANSWERS CORRECTLY WILL GET BRAINLEST

Mathematics

1 answer:

gogolik [260]3 years ago

7 0

5×4=20 is closer to 24.9344.

$487 \times 512=24.9344$

Let's try placing the decimals after the hundreds place.

$4.87 \times 5.12=24.9344$

It works.

There is more than one possibility.

$.487 \times 51.2=24.9344$

$48.7 \times .512=24.9344$

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sukhopar [10]

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What characteristic of a parabola can be easily identified when the factored form of a quadratic is given?

Shkiper50 [21]

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3 years ago

the fifth graders were given sandwiches for lunch during their field trip nathan ate 5/6 of his sandwich, leroy ate 7/8 of his s

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3 years ago

Read 2 more answers

Suppose we have an unfair coin that its head is twice as likely to occur as its tail. a)If the coin is flipped 3 times, what is

Alenkinab [10]

Answer: a) 0.2222, b) 0.3292, c) 0.1111

Step-by-step explanation:

Since we have given that

Let the probability of getting head be p.

Since, its head is twice as likely to occur as its tail.

$p+\dfrac{p}{2}=1\\\\\dfrac{3p}{2}=1\\\\p=\dfrac{2}{3}$

a)If the coin is flipped 3 times, what is the probability of getting exactly 1 head?

So, here, n = 3

$p=\dfrac{2}{3}$

$q=\dfrac{1}{3}$

Now,

$P(X=1)=^3C_1(\dfrac{2}{3})^1(\dfrac{1}{3})^2=0.2222$

b)If the coin is flipped 5 times, what is the probability of getting exactly 2 tails?

2 tails means 3 heads.

So, it becomes,

$P(X=3)=^5C_3(\dfrac{2}{3})^3(\dfrac{1}{3})^2=0.3292$

c)If the coin is flipped 4 times, what is the probability of getting at least 3 tails?

$P(X\leq 1)=\sum _{x=0}^1^4C_x(\dfrac{2}{3}^x(\dfrac{1}{3})^{4-x}=0.1111$

Hence, a) 0.2222, b) 0.3292, c) 0.1111

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3 years ago

When a barrel is 30% empty it

blondinia [14]

Answer:

it is 70% full

Step-by-step explanation:

When it is 30 % empty it means it is 70% full

0.7x=0.3x+30

0.7x-0.3x=30

5 0

3 years ago