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Gre4nikov [31]
3 years ago
12

Jocelyn was asked to draw a square with an area of 20 cm2. Which could be the side length of the square? I. 20 cm II. 5 cm III.

4.5 cm​
Mathematics
1 answer:
Paladinen [302]3 years ago
5 0

Answer:

The correct option is III: 4.5 cm.

Step-by-step explanation:

The area of a square is the following:

A = b^{2}    (1)

Where:

A: is the area

b: is the side of the square

We have that the area is 20 cm², hence by solving equation (1) for <em>b</em> we can find the side:

b = \sqrt{A} = \sqrt{20 cm^{2}} = 4.5 cm

Therefore, the correct option is III: 4.5 cm.

I hope it helps you!

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A hand of 5-card draw poker is a simple random sample from the standard deck of 52 cards. How many 5 draw poker hands are there?
kupik [55]

Answer:

There are 2,598,960 5 draw poker hands are there.

There are 311,875,200 5-stud poker hands.

Step-by-step explanation:

When the order is not important, we use the combinations formula:

For example, eating an apple and an orange is the same as eating an orange and an apple.

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

When the order is important, we use the permutations formula:

For example, a 3 digit credit card password, 123 is different than 213.

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!)}

A hand of 5-card draw poker is a simple random sample from the standard deck of 52 cards. How many 5 draw poker hands are there?

Here, the ordering is not important, so we use the combinations formula.

C_{52,5} = \frac{52!}{5!47!} = 2598960

There are 2,598,960 5 draw poker hands are there.

In 5-card stud poker, the cards are dealt sequentially and the order of appearance is important. How many 5-stud poker hands are there?

The ordering is important, so we use the combinations formula.

P_{(52,5} = \frac{52!}{47!)} = 311875200

There are 311,875,200 5-stud poker hands.

7 0
4 years ago
a car dealer buys a new car for 24,500 the dealer then marks the cars price up 27% what is the selling price of the car
Gelneren [198K]
$24500 multiply by 27%= $6,615 There , $24500( initial price ) + $6,616= $31,115 ( as the new price).
3 0
3 years ago
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What amount of heat is required to raise the temperature of 5 kg of water through 20° c?<br>​
allochka39001 [22]

Answer:

420,000 J/Kg

Step-by-step explanation:

energy= temperature change* mass* specific heat capacity

energy= 20*5*4200

energy= 420,000

7 0
3 years ago
4x-6/3=5x-14/7 how many so
AleksAgata [21]
X=o
if you need a different answer lmk and i’ll help :)
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3 years ago
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How could you write 4/8 as a percent without dividing<br>​
jeka94

4/8

= 1/2 (half of 1%)

= 0.5%

7 0
4 years ago
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