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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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