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2 answers:
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
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Answer:
Step-by-step explanation:
1.
Shirts cost $20 each and ties cost $12 each.
<u>Expression for the cost:</u>
Correct choice is B
2.
<u>An expression that represents 40% of a number is:</u>
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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Step-by-step explanation:
A.
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Hi! Where is the rest of this question
Alexandera=a
imani=i
a is 8 more than i or
a=8+i
the sum of the 2 numbers is 50 or
a+i=50
a=8+i
so subsitute 8+i for a in a+i=50
8+i+i=50
8+2i=50
subtract 8 from both sides
2i=42
divide both sides by 2
i=21
subsiutte into a=8+i
a=8+21
a=29
a=29
i=21