Answer:
y = -1
x = 9
(9, -1)
Step-by-step explanation:
1) Since "x" equals <em>-4y+5, </em>substitute that into the bottom equation for x: -4y+5+2y=7
2) Combine like terms: -2y+5=7
3) Subtract 5 from both sides: -2y=-2
4) Divide both sides by -2: y=-1
Now you have figured out that <em>y= -1 </em>
1) Substitute <em>-1 </em>for <em>y </em>in the top equation: x=-4(-1)+5
2) Solve: x=4+5
3) x=9
Now you have figured out that <em>x=9 </em>
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The final answer is (9, -1)
Hope this helps! :)
3cm/5m=7.5cm/x
Cross multiply
3x=37.5
Divide by 3 to isolate x
x=12.5m
Answer:
116
Step-by-step explanation:
82 brownies sold for $1 each is $82 in total
140-82=58
each cookie is sold at $0.5 so we need to multiply the rest of the cash by 2
58×2=116
so he needs to sell 116 more cookies to reach his goal
Answer: The zeroes of this function are x = 0 (which has a multiplicity of 1) and x = -3 (which has a multiplicity of 2) The graph of this function will be attached. Lastly, (-1, -4) is the local minima and (-3, 0) is the local maxima. I hope this has helped :)