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Zigmanuir [339]

3 years ago

13

Will vote brainliest. Thanks!!!

1 answer:

AVprozaik [17]3 years ago

8 0

I believe that the answer to your question is B !

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These lines are perpendicular. Is this statement true or false?

umka2103 [35]

False they are not exact recipricals

5 0

2 years ago

A radioactive substance decays at a rate of 25% every 10 years. Which equation represents the amount of the substance (S) remain

Lelechka [254]

Answer:

$y = 100 * (0.75)^{30$

Step-by-step explanation:

Given

$a =100$ --- Initial Amount

$r= 25\%$ every 10 years

Required

The remaining amount after 300 years

To do this, we make use of:

$y = a(1 - r)^T$

Where

r = decay rate

T = the period of decay

In 300 years, there are 30 periods of 10 years.

i.e.

$T = \frac{300}{10}$

$T = 30$

$y = a(1 - r)^T$

$y = 100 * (1 - 25\%)^{30$

$y = 100 * (1 - 0.25)^{30$

$y = 100 * (0.75)^{30$

3 0

3 years ago

Identify next three numbers in this sequence: 2, 6, 3, 9, 6, 18, 15…

LiRa [457]

Answer:

10000000000000000000000,

the next number: 1-934028049747284

that's all

pls report

thanks!))))

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

To make a greeting card, Bryce used 1/8 sheet of red paper, 3/8 sheet of green paper, and 7/8

Olegator [25]

Answer:

Three sheets

Step-by-step explanation:

Even though he used less than an entire sheet of each color, he still used three sheets of paper to make the card.

8 0

2 years ago

Read 2 more answers

Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn repeatedly with replacement.

Mrrafil [7]

Answer:

$E(X_n)=\frac{2(n-1)}{27}$

$E(y)=\frac{14}{9}$

Step-by-step explanation:

From the question we are told that:

Sample size n=9

Number of Green $g=4$

Number of yellow $y=4$

Number of white $w=4$

Probability of Green Followed by yellow P(GY) ball

$P(GY)=\frac{4}{9}*\frac{3}{9}$

$P(GY)=\frac{4}{27}$

Generally the equations for when n is even is mathematically given by

$Probability of success P(S)=\frac{4}{27}$

$Probability of Failure P(F)=\frac{27-4}{27}$

$Probability of Failure P(F)=\frac{23}{27}$

Therefore

$E(X_n)=\frac{n}{2}*P$

$E(X_n)=\frac{n}{2}*\frac{4}{27}$

$E(X_n)=\frac{2n}{27}$

Generally the equations for when n is odd is mathematically given by

$\frac{n-1}{2}$

$E(X_n)=\frac{n-1}{2}*\frac{4}{27}$

$E(X_n)=\frac{2(n-1)}{27}$

b)

Probability of drawing white ball

$P(w)=\frac{2}{9}$

Therefore

$E(w)=\frac{1}{p}$

$E(w)=\frac{1}{\frac{2}{9}}$

$E(w)=\frac{9}{2}$

Therefore

$E(y)=[E(w)-1]\frac{4}{9}$

$E(y)=[\frac{9}{2}-1]\frac{4}{9}$

$E(y)=\frac{14}{9}$

5 0

2 years ago