price after discount = t - 1/3 t
= 2/3 t
so option B and E are correct answer
3x - y = 3.....3x - 3 = y
1/4x + 2/3(3x - 3) = -17/4
1/4x + 2x - 2 = -17/4 ...multiply everything by 4
x + 8x - 8 = -17
9x = -17 + 8
9x = - 9
x = -1
3x - y = 3
3(-1) - y = 3
-3 - y = 3
-3 - 3 = y
-6 = y
solution is (-1,-6)
Answer:
2) r=73
Step-by-step explanation:
all 4 sided shapes add up to 360.
so 90+90=180
180+107=287
360-287=73
so r=73
Answer:
-n⁴ + 4n
Step-by-step explanation:
Step 1: Write expression
(3n⁴ + 6n + 6n) - (n + 4n⁴ + 7n)
Step 2: Combine like terms
3n⁴ + 12n - (4n⁴ + 8n)
Step 3: Distribute -1
3n⁴ + 12n - 4n⁴ - 8n
Step 4: Combine like terms
-n⁴ + 4n
2x + 5y + 7x
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Combine like terms
(2x + 7x)
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9x + 5y
