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yanalaym [24]
3 years ago
5

PLEASE HELPPP (NO LINKS) (NO LINKS) (NO LINKS)

Mathematics
2 answers:
iVinArrow [24]3 years ago
5 0

Question 1)

Given:

Cost of each shirt = 20$

Cost of each tie = 12$

To find:

An expression for the cost of 's' shirts and 't' ties

Steps:

Number of shirts = 's'

cost of shirts = 20 * s              (becuase one shirt cost 20 so n shirts cost 20 * n shirts)

Number of ties = 't'

Cost of ties = 12 * t                 (becuase one tie cost 12 so n ties cost 12 * n ties)

Total cost = 20 * s + 12 * t

=20s + 12t

Therefore the answer is b) 20s + 12t

Question 2)

We know that 100% = 1

So, 40% = 0.4

Therefore an expression that represnets 40% of a number is 0.4n

So, it B) False

Question 3)

Given:

t = -2

x = 3

z = 5

To find:

4z + 3x - t

Steps:

4z + 3x - t

= 4(5) + 3(3) - (-2)

= 20 + 9 + 2

= 29 + 2

= 31

Therefore the answer is C) 31

Happy to help :)

If you need more explanation pls ask

rosijanka [135]3 years ago
3 0

Answer:

  • B, B, C

Step-by-step explanation:

1.

Shirts cost $20 each and ties cost $12 each.

<u>Expression for the cost:</u>

  • 20s + 12t

Correct choice is B

2.

<u>An expression that represents 40% of a number is:</u>

  • 40*n/100 = 0.4n

Correct choice is B. False

3.

t = -2, x = 3 and z = 5

  • 4z + 3x − t =
  • 4*5 + 3*3 - (-2) =
  • 20 + 9 + 2 =
  • 31

Correct choice is C. 31

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A poker hand is a set of 5 cards randomly chosen from a deck of 52 cards. Find the probability of a (a) royal flush (ten, jack,
zysi [14]

Answer:

a) 0.000001539

b) 0.00001385

c) 0.0002401

d) 0.001441

e) 0.001966

Step-by-step explanation:

Since there are 52 deck of cards, and the hand of the poker is 5 set, then the total number of hands achievable would be

T = 52! / 5!(52 - 5)!

T = 52! / 5! 47 !

T = 2598560 possibilities.

a) There are 4 ways of getting a royal flush. So the probability of getting a royal flush is

4 / 2598560 =

0.000001539

b) There are 9 hands from the 5 card hands, and also, there are 4 possible suits. So then, the probability is

9 * 4 / 2598560 =

36 / 2598560 =

0.00001385

c) There are 13 possible ways to get a four of a kind, since there are 5 cards with the poker, the remaining would be taken from the 48 remaining cards, thus

13 * 48 / 2598560 =

624 / 2598560 =

0.0002401

d) 3 of a kind in conjunction with a pair is needed to form a full house. This 3 of a kind can be gotten from any 4 suits. Then again, the pair has two cards with the same face value. So,

4! / 2! (4 - 2)! =

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0.001441

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13! / 5! (13 - 5)! =

13! / 5! 8! = 1287

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1287 - 10 = 1277

Since there are 4 suits, the probability of getting a flush is

1277 * 4 / 2598560 =

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Tomtit [17]

Answer:

The answer is<u> D.</u> h+3/j+6.

Step-by-step explanation:

Given:

The equation h + 3 = jk + 6k.

Now, to get the mathematical expression.

h + 3 = jk + 6k

So, taking k common on R.H.S we get:

h + 3 = k(j + 6)

Then, dividing both sides by j+6  we get:

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k=\frac{h+3}{j+6}

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Answer:

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