<span>3x + y = 9 (I)
</span><span>y = –4x + 10 (II)
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Pass the incognito "4x" to the first term, changing the signal when changing sides.
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simplify by (-1)
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</span></span><span>Substitute in equation (I) to find the value of "Y".
</span>3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3

Answer:

x=9 because the triangle is equilateral which means every side is equal to 60. When you do the math you get 7x-3=60 which is 7x=63 and 63/7=9
Answer: 17 1/2 or decimal form = 17.5
Step-by-step explanation: Hope this helped!
Answer: $29, 290.5
Step-by-step explanation:
1.15($25,470)=
Answer:
yuhhhh
Step-by-step explanation:
except im grounded... but will def save this for 2 mounths