Answer:

Step-by-step explanation:

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Answer:
Thy bought 150 Sweatshirts (x) and 250 tshirts (y)
Step-by-step explanation:
35x + 25y = 11500
x + y = 400
-25 (x + y = 400) Multiply by -25 to get the y's to disappear when you add the two equations together
-25x - 25y = 10000
<u> 35x + 25y = 11500 </u>
10x =1500
x = 150
Plug 150 in either equation for x to find y
150 + y = 400
y = 250
No because a square pyramid must hav a square for its base and a square is not a triangle
answer is not possible
First you had to remove parenthesis first.

Multiply by the numbers.

Final answer 



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Answer:
Step-by-step explanation:
the original price was the one she started at