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3 years ago

Answer pleaseeee??? Thanks

Mathematics

2 answers:

inessss [21]3 years ago

5 0

Answer:

True!

Step-by-step explanation:

3(10) - 9

30 - 9

algol133 years ago

3 0

Answer: false becuase you would add 9 to both sides simply 3x=19 then 19/3 then if u want to check it just plug 19/3 in the equation then cancel 3 simply 19-9.

Step-by-step explanation: i'm not so sure but hope it helps .

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Edwin walks for 2 hours. He walks 1 miles in the first hour, 1 miles in the second hour and 1 of the total distance in the last

Free_Kalibri [48]

Is it 3 miles? From what you wrote, I believe this would be the answer.

6 0

3 years ago

A game of chance involves rolling an unevenly balanced 4-sided die. The probability that a roll comes up 1 is 0.22, the probabil

GuDViN [60]

Answer:

Expected Winnings = 2.6

Step-by-step explanation:

Since the probability of rolling a 1 is 0.22 and the probability of rolling either a 1 or a 2 is 0.42, the probability of rolling only a 2 can be determined as:

$P_{1,2} = P_{1}+P_{2}\\P_{2} = 0.42 - 0.22 = 0.20$

The same logic can be applied to find the probability of rolling a 3

$P_{2,3} = P_{2}+P_{3}\\P_{3} = 0.54 - 0.20 = 0.34$

The sum of all probabilities must equal 1.00, so the probability of rolling a 4 is:

$P_{4} =1- P_{1}+P_{2}+P_{3} = 1-0.22+0.20+0.34\\P_{4}=0.24$

The expected winnings (EW) is found by adding the product of each value by its likelihood:

$EW=1*P_{1}+2*P_{2}+ 3*P_{3}+ 4*P_{4} \\EW=1*0.22+2*0.20+ 3*0.34+ 4*0.24\\EW=2.6$

Expected Winnings = 2.6

8 0

3 years ago

A music company sells CDs for a particular artist. The company has advertising cost of $4,000 and recoding costs of $10,000; The

alukav5142 [94]

Answer:

First, let's write all the costs:

$4,000 in advertising.

$10,000 in the recording.

$5,50 per cd.

Then we have that the cost will be:

C(x) = $4,000 + $10,000 + $5.50*x

where x is the number of CDs distributed.

C(x) = $5.50*x + $14,000.

Now, they win $7.20 per cd, so the tota wins are:

W(x) = $7.20*x

The profit will be the difference between the total win and the cost:

p(x) = $7,20*x - $5.50*x - $14,000 = $1.7*x - $14,000

Now with this function, we can calculate the number of CDs that the company needs to sell in order to break even, that is when the profit is exactly zero.

P(x) = $0 = $1.7*x - $14,000

$1.7*x = $14,000

x = $14,000/$1.7 = 8,235.3 CDs, that we should round up to 8,236.

This means that the company must sell more than 8,236 if they want to have a positive profit.

8 0

3 years ago

What is the product of 4xy and y^2+2x

kondaur [170]

Look at the attached picture

Hope it will help you

Good luck on your assignment

3 0

3 years ago

BRAINLIST and points help

iragen [17]

Answer:

B=2

Step-by-step explanation:

6 0

3 years ago

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