Mathematics High School

A grab-bag contains 30 packages worth $.65 each, 10 packages $.60 cents each, and 15 packages worth $.30 each. What is the expected value if you have to pay $.50 to pick one package at random?

Answers

Answer 1

Answer:

Expected value of package = $0.04 (Approx.)

Step-by-step explanation:

Given:

30 packages at $0.65 each

10 packages at $0.60 each

15 packages at 0.30 each

Pick up price for random one = $0.50

Find:

Expected value of package

Computation:

Total cost of 30 package = 30 x 0.65

Total cost of 30 package = $19.5

Total cost of 10 package = 10 x 0.60

Total cost of 10 package = $6

Total cost of 15 package = 15 x 0.30

Total cost of 15 package = $4.5

Total cost = 19.5 + 6 + 4.5

Total cost = $30

Cost of random package = 30 / [30+10+15]

Cost of random package = $0.54

Expected value of package = 0.54 - 0.50

Expected value of package = $0.04 (Approx.)

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Answer:

2 x ( -4 ) = -8

Step-by-step explanation:

2 x 4 = 8

a negative x a positive = negative

so therefore the answer is -8

factor completely x^2+6x-27?

Answers

Answer:

(x+9)(x-3)

Step-by-step explanation:

Find the number that multiplies to make -27 and adds to make 6. In this case it is 9 and -3. Use these numbers to factorise.

Answer:

(x-3) (+9)

Step-by-step explanation:

To know what numbers to use, factor out the constant (-27).

You would get the numbers : 1,3,9,27.

Then figure out which numbers would make the 6x true. In this case, we would need the 3 and 9. They also need to add up to 6x, so the 3 needs to be negative.

-3 & 9

Then form the factors:

(x-3) (x+9)

--------------------------

You can also check this to make sure.

Have a nice day!

Every seventh-grade student at Martin Middle School takes one world language class.
One-tenth of the seventh-grade students take French. Eighteen seventh-grade students take French.

Which equation represents s, the total number of seventh-grade students at the middle school?
18 = 0.1 s
18 = StartFraction 10 over s EndFraction
StartFraction s over 0.1 EndFraction = 18
10 s = 18

Answers

Option (A) 18 = 0.1s

Step-by-step explanation:

Every seventh-grade student at Martin Middle School takes one world language class.

Now we will form the equation as per statement of the question.

Let total students of seventh-grade = s

" one tenth of seventh grade students take  French."

" Students who took French were 18."

So  of s = 18

(0.1)s = 18

therefore, Option (A) 18 = 0.1s is the answer.

Answer

a

Step-by-step explanation:

Josh's soccer team had a competition to see which player should be the goalie. Each player tried to block 15 kicks from entering the goal, and the coach recorded the number of successfully blocked kicks. Josh made a dot plot to display the information. What is the interquartile range for the data?​

Answers

Answer:







Explanation








I am having problems sorry if you can’t see it let me know if you can’t see it

Answer:

sup

Step-by-step explanation:

hey

It costs $520 to plant 4 acres of corn. How much would it cost to plant \large \frac{3}{5} acre of corn?

Answers

Answer:

$78 to plant 3/5 an acre of corn

Step-by-step explanation:

you can set up a fraction. 

520/4 = x/6

Cross multiply

312 = 4x

Divide both sides by 4 equal to

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Answers

Answer:

10

Step-by-step explanation:

You move up 4 units and down 7 units. You end at (-5, -4). Where did you start?


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I'm CONFUSED!!


Even my math teacher doesn't understand!!

Answers

Answer:

-5, -1 is the start

Step-by-step explanation:

Answer:

(-5,-7)

Step-by-step explanation:

moving up 4 units would leave you at (-5,0) then, after moving back down 7, you would get (-5,-7)

THIS IS VERY IMPORTANT I WILL GIVE BRAINLIEST TO THE PERSON WHO DOES ALL 5 QUESTIONS FOR ME.

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Answer:

Step-by-step explanation:

406525%

Answer:

Q1; 40

Q2; 65

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Q4; A (?)

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Step-by-step explanation:

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Answer:

5:7

Step-by-step explanation:

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Answer:

4.32

Step-by-step explanation:

gansnxiuzgenemxjxhsbe dnsjzuxghsbeb3ne

write an exponential expression showing organism B’d increase in population over the same 8 days

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Answer:

the answer is 5^2

Step-by-step explanation:

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Answer:

Yes only bots

Step-by-step explanation:

Answer:

ikr its so annoying

Step-by-step explanation:

Consider the sequence 20, 14, 8, 2, -4, ....
(a) Write a recursive rule to represent the sequence.
(b) Write an explicit rule to represent the sequence.
(c) Find the 30th term in the sequence.
The BEST answer gets brainliest!! Hurry now!

Answers

[tex](a)\quad a_{n+1}=a_n-6\\\\(b)\quad a_1=20,\ d=2-8=-6\implies a_n=20+(-6)(n-1)\\\\{}\qquad a_n=-6n+26\\\\(c)\quad a_{30}=-6\cdot30+26 = -154[/tex]

commen denominaor for 1/4 2/3

Answers

Answer:

The least common denominator is 12.

Step-by-step explanation:

Here's how I got my answer.

First, I listed out the multiples of 4, which is the denominator of 1/4.

4: 4, 8, 12, 16

Next, I listed out the multiples of 3, which is the denominator of 2/3.

3: 3, 6, 9, 12

The smallest number they have in common is 12.

Therefore, the least common demoninator (LCM) is 12.

If your roots are -3 and -1, your factors will be (x+3)(x+1), yes? But if your roots are positive, like 3 and 1, would it still be (x+3)(x+1), or would you then make it negative?

Answers

Determine the number of possible positive and negative real roots of the equation:

x - 4x + 5x² + 9x² + 2x 8

a 2 or 0 negative roots; 3 or 1 positive roots

b. 5, 3, or 1 negative roots;

4, 2 or 0 positive roots

c.

d.

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3 or 1 negative roots; 2 or 0 positive roots

Dog food bad contains 18 cups to fill it up his friend dog eats 1 1/2 each day he says he'll be able to feed his dog for 27 days that true?

Answers

Answer:

It's not true because 18 cups will only last 12 days, not 27 days.

Step-by-step explanation:

1 1/2 = 3/2

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equations?

Answers

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how do you translate a figure in a coordinate plane?

Answers

Answer:

Answer down below

Step-by-step explanation:

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The area of a rectangular patio is 3x2 + 17x + 20 ft
Which of the following could be dimensions of the patio?
O A. X+ 5 ft by 3x + 4 ft
B. 3x + 5 ft by x + 4 ft
O
C. X + 5 ft by x + 4 ft
O D. 3x + 5 ft by 3x + 4 ft

Answers

Answer:

a

Step-by-step explanation:

Ishmael's stock went up $17 on Thursday and then down $13 on Friday. What was the total change in the value of the stock?.

Answers

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Step-by-step explanation:

[tex]5^{-2}[/tex] × [tex]\sqrt[3]{8}[/tex]

Give your answer in decimal

Answers

Answer:

0.08

Step-by-step explanation:

∛8 = 2 as 2*2*2 = 8

[tex]5^{-2}[/tex] = [tex]\frac{1}{5^{2} }[/tex] = [tex]\frac{1}{25}[/tex]

[tex]\frac{1}{25}[/tex] * 2 = [tex]\frac{2}{25}[/tex] = 0.08

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compare the difference of the means of the two data sets found in part H as multiple m of their variability ​

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Answer:

Step-by-step explanation:

I know that the two means are are 11.28 and 12.

I could be wrong but I did the math 5 times.

Answer:

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Step-by-step explanation:

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Answer:

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Answers

Answer:

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Step-by-step explanation:

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Answers

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These should be your answer! Make sure to double check!

Step-by-step explanation:

Just simplify.

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Step-by-step explanation:

Answer:

Step-by-step explanation:

The two triangles are similar because of their angles. Both of the triangles contain a 90 degree angle, a angle, and 90-a angle.

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