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ki77a [65]
3 years ago
14

PLEASE HELP ME

Mathematics
2 answers:
earnstyle [38]3 years ago
8 0
So here you're using system of equations. You can solve systems by graphing, elimination, or substitution. Ill use substitution. First lets solve for x. take the second equation and add y to both sides to get x by itself:
x - y = 75
x = y + 75 now plug y+75 in for x in the first equation
x + y = 743
(y +75) +y = 743 solve for y
2y +75 = 743 subtract 75
2y = 668 divide both sides by 2
y = 334
now plug this into any of the 2 equations to solve for x i chose the second one
x - y = 75
x - 334 = 75  add 334 to both sides
x = 409
This means x, sold before the tournament is 409 and y, sold at the door is 334. That means the assistant is wrong and accidentally flipped the two answers
kirill115 [55]3 years ago
7 0

Sample Response: No, the assistant’s solution is incorrect. The solution (334, 409) satisfies the first equation, but not the second. The assistant mixed up the numbers. The solution should be (409, 334)

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Two solutions were found :

 x = -1/2 = -0.500

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Step by step solution :

Step  1  :

Equation at the end of step  1  :

(2x2 - 5x) - 3 = 0

Step  2  :

Trying to factor by splitting the middle term

 2.1     Factoring  2x2-5x-3 

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Step-1 : Multiply the coefficient of the first term by the constant   2 • -3 = -6 

Step-2 : Find two factors of  -6  whose sum equals the coefficient of the middle term, which is   -5 .

3 0
3 years ago
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nordsb [41]

Answer:

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Step-by-step explanation:

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Then, you multiply:

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3 0
2 years ago
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mezya [45]
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8 0
3 years ago
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Shkiper50 [21]

Answer:

a

Step-by-step explanation:

=3a + a + 2a - 5a

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= a

hope it helps u tate!

5 0
3 years ago
Read 2 more answers
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