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4 years ago

I need help with part a and b please with explanations ANSWER ASAP!!!!!!!

Mathematics

1 answer:

Naddik [55]4 years ago

7 0

Answer:

(a) Planet A: 1,000,000,000

Planet B: 10,000,000

Planet C: 100,000,000

[10^n will always equal a 1 followed by n zeroes. So 10^9 was a 1 followed by 9 zeroes which equals 1,000,000,000 or 1 billion]

(b) Dwarf Planet: 2 x 10^6

[Multiply the radius by 2 to get the diameter. So the dwarf planet's diameter is 2/100 of Planet C's diameter. You then multiply the 2/100 by Planet C's diameter to get 2,000,000 or 2 x 10^6

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A bag contains 3 gold marbles, 6 silver marbles, and 30 black marbles. The rules of the game are as follows: You randomly select

GaryK [48]

Answer:

The expected profit is $0.23077.

Step-by-step explanation:

From the given information it is clear that

Gold marbles = 3

Silver marbles = 6

Black marbles = 30

Total number of marbles = 3+6+30=39

The probability of selecting gold marble is

$\frac{3}{39}=\frac{1}{13}$

The probability of selecting silver marble is

$\frac{6}{39}=\frac{2}{13}$

The probability of selecting black marble is

$\frac{30}{39}=\frac{10}{13}$

It is given that If it is gold, you win $6, if it is silver, you win $5. If it costs $1 to play. Then the expected profit is

Expected profit or loss = 6(Probability of gold marble)+5(Probability of silver marble)-1

Expected profit or loss = $6(\frac{1}{13})+5(\frac{2}{13})-1$

Expected profit or loss = $\frac{6}{13}+\frac{10}{13}-1$

Expected profit or loss = $\frac{6+10-13}{13}$

Expected profit or loss = $\frac{3}{13}$

Expected profit or loss = 0.23076923

Expected profit or loss ≈ 0.23077

Positive sigh represents the profit.

Therefore the expected profit is $0.23077.

6 0

3 years ago

Help plz this is the quiz that sees if i fail or not

DaniilM [7]

Answer:84 mi and 12 days

Step-by-step explanation:

It says it right there

8 0

3 years ago

Read 2 more answers

One pipe fills a storage pool in 20 hours, another pipe fills the same pool in 15 hours.

erica [24]

X=time of the third person it would take to fill the pool
We can suggest this equation:
6[(1/20) + (1/15) +(1/x)]=1
6[(3x+4x+60)/60x]=1
(7x+60)/10x=1
7x+60=10x
7x-10x=-60
-3x=-60
x=-60/-3
x=20

Answer: the third person alone would fill the pool in 20 hours .

6 0

3 years ago

Find a possible formula for the trigonometric function represented by the given table of values. (enter your answer in the form

uranmaximum [27]

A function assigns the values. The function will be 8cos(2x-π)+4.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given the maximum value is 12, while the minimum value is -4, therefore,

A = (Max-Min)/2 = 12-(-4)/2 = 8

D = (Max+Min)/2 = (12-4)/2 = 4

Period=π, but since x =-4 at 0 or π, therefore,

(2π/B) = π

B = 2π/π = 2

C/B = π/2, {∴At π/2 maximum}

C=π

Hence, the function will be 8cos(2x-π)+4.

Learn more about Function:

brainly.com/question/5245372

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8 0

2 years ago

The ordered pair (0,4) is a soultion of which system

Anettt [7]

<span>This question is asking you to substitute 0 for X and 5 for y in both equations. If the right hand value is equal to the left hand value after making the substitution, the answer is "yes". Otherwise, the answer is "no".
Substitute 0 for x and 5 for y in the first equation and then the second equation. Since 0 + 5 = 5 and -5*0 + 2*5 = 10 the answer </span>

5 0

3 years ago