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Len [333]
2 years ago
15

How do you solve 821*54 using an area model

Mathematics
1 answer:
SpyIntel [72]2 years ago
8 0

Answer:

    <u>  800 20 1    </u>

50<u>|          |     |   |</u>

4  <u>|          |      |   |</u>

pretty much a rectangle with 800    20    1    at the top

50     4 on the side

and split the numbers in the box - i tried to recreate it as much as possible

oh then in each little box you have to multiply the numbers so

50 x 800 = 40,000 in the box

50 x 20 = 1,000 in the next box

50 x 1 = 50 in the next box

4 x 800 = 3,200

4 x 20 = 80

4 x 1 = 4

then you add all of them which would be 44,334

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II'll mark brainliest who is the first to answer both questions correctly.
Strike441 [17]

Answer:

A) The probability that each player gets an ace, a 2 and a 3 with the order unimportant = (72/1925) = 0.0374

B) The probability of winning the jackpot = (1/1200) = 0.0008333

Step-by-step explanation:

A) There are four Aces, four 2's, and four 3's, forming a set of 12 cards

These cards are to be divided at random between 4 players.

What is the probability that each player gets an ace, a 2 and a 3.

We start with the first player, the probability of these cards for the first player, with order not important (because order isn't important, there are 6 different arrangement of the 3 cards)

6 × (4/12) × (4/11) × (4/10) = (16/55)

Then the second player getting that same order of cards

6 × (3/9) × (3/8) × (3/7) = (9/28)

Third player

6 × (2/6) × (2/5) × (2/4) = (2/5)

Fourth player

6 × (1/3) × (1/2) × (1/1) = 1

Probability that each of the players get different cards is then a multiple of the probabilities obtained above

= (16/55) × (9/28) × (2/5) × 1

= (288/7700) = (72/1925) = 0.0374

B) The concluding part of the B question.

To win the jackpot, the numbers on your ticket must match the three white balls and the SuperBall. (You don't need to match the white balls in order). If you buy a ticket, what is your probability of winning the jackpot?

Probability of wimning the jackpot is a product the probability of getting the 3 white balls correctly (order unimportant) and the probability of picking the right red superball

Probability of picking 3 white balls from 10

First slot, any of the 3 lucky numbers can fill this slot, (3/10)

Second slot, only 2 remaining lucky numbers can fill this slot, (2/9)

Third slot, only 1 remaining lucky number can fill this slot, (1/8)

(3/10) × (2/9) × (1/8) = (1/120)

Probability of picking the right red superball

(1/10)

Probability of winning the jackpot = (1/120) × (1/10) = (1/120) × (1/10) = (1/1200) = 0.0008333

Hope this Helps!!!

5 0
3 years ago
2.077× (10 to the -4th power) In Scientific notation PLEASE HELP
Rzqust [24]
If you are doing any scientific notation to the negative power the answer will be a decimal. In this case you will move the decimal point four places to the left.
The answer will be 0.0002077
4 0
3 years ago
What is 2+2x2 wansheydycgdgzgzgs
Lera25 [3.4K]

Answer: 6

Step-by-step explanation:

2×2=4

4+2=6

5 0
3 years ago
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Help how do I solve this and how do I do it
Alja [10]

Answer:

C. 30+18x

Step-by-step explanation:

6x5=30

6x3=18

30+18x

3 0
3 years ago
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If 3^2x+1=3^x+5 what is the value of x?
atroni [7]
Did you mean this?    <span>3^2x+1=3^x+5  =>  3^(2x+1) = 3^(x+5)?  If so, then 2x+1 is necessarily equal to x+5, so that 2x+1=x+5.  Thus, x = 4 (answer).

Those parentheses are not optional; they must be part of your problem statement and solution.</span>
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3 years ago
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