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3 years ago

I have six eggs i crack 2 cook 2 and eat 2. How many do i have left?

Mathematics

1 answer:

alukav5142 [94]3 years ago

3 0

Answer:

Step-by-step explanation:

six in total, ended up cooking two.

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The right line segment DC paralla with line segment AB the origin is O<br> prove that AO/OD=BO/OC

katrin [286]

Answer the answer is A

thank you have a good day

Step-by-step explanation:

8 0

2 years ago

Solve x/12+3<7<br> thanks!

Bezzdna [24]

Answer:

x < 48

Step-by-step explanation:

First, subtract 3 from both sides of this inequality: x/12 < 4.

Multiply both sides of this inequality by 12 to remove fractions: x < 48

5 0

3 years ago

Let X equal the number of flips of a fair coin that are required to observe

Nataliya [291]

Answer:

(a) I attached a photo with the diagram.

(b) $f(x) = \big( \frac{1}{2} \big)^{x-1}$

(d) 4

(e) $k^2/2$

Step-by-step explanation:

(a) I attached a photo with the diagram.

(b) The easiest way to think about this part is in terms of combinatorics. Think about it like this.

To begin with, look at the three each level of the three represents a possible outcome of throwing the coin n-times. If you throw the coin 3 times at the end in total there are 8 possible outcomes. But The favorable outcomes are just 2.

1 - Your first outcome is HEADS and all the others are different except the last one.

2 - Your first outcome is TAILS and all the others are different except the last one.

Therefore the probability of the event is

$f(x) = P(X=x) = \frac{2}{2^x} = \frac{1}{2^{x-1}} = \big( \frac{1}{2} \big)^{x-1}$

(c)

P(X = 0) = 0 because it is not possible to have two consecutive tails or heads.

$E(X > 4) = 1 - P(X \leq 3) = 1 - ( P(X = 0 ) + P(X = 1) + P(X = 2) + P(X = 3))\\= 1 - ( \frac{1}{2} + \frac{1}{4} ) = \frac{1}{4}$

(d)

Remember that this is a geometric distribution therefore

$E[X] = p/(1-p)$ , in this case $p = 1/2$ so $E[X] = 1$ and

$E[X+1]^2 = ( E[X] +1 )^2 = (1+1)^2 = 2^2 = 4$

Also

(e)

This is a geometric distribution so its variance is

$Var(X) = \frac{1-p}{p^2} = 1/2 / 1/4 = 1/2$

And using properties of variance

$Var(kX - k ) = Var(kX) = k^2 var(X) = k^2 /2$

3 0

4 years ago

A grocer sold 45% of his stock of sugar and the quantity that he sold was 96 kg less than the quantity left how much sugar did h

zmey [24]

Answer:

He sold 960 kg

Step-by-step explanation:

Let the initial stock measure be x kg

So if he sold 45% ; what he sold was;

45/100 * x = 0.45x

So the quantity left would be;

x - 0.45x = 0.55x

So what was left is 96kg more than what was sold

Mathematically, we have this as;

0.55x - 0.45 x = 96

0.1x = 96

x = 96/0.1

x = 960 kg

7 0

3 years ago

What is the value of x in 2(5^x)=14

svlad2 [7]

X is about 1.20906195
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5 0

3 years ago