<span>Solve the system
9x = 27-9y
20x=71-9y
Let's use the "elimination through addition/subtraction method.
Multiply the first equation by -1 so as to obtain +9y:
-9x = -27 + 9y
</span><span>20x= 71- 9y
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Add these 2 equations together:
</span>-9x = -27 + 9y
20x= 71- 9y
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<span> 11x = 44
Solve this for x: x = 44/11 = 4.
Now find y by subst. 4 for x in either of the original equations.
Using the second equation: </span><span>
</span>20x=71-9y
20(4) = 71 - 9y
80-71 = -9y
9 = -9y. Then y = -1.
The solution set is (4,-1).
Answer:
I can't see the whole question. If they want the area of the front it is 84
Step-by-step explanation:
Answer: 24.2
Step-by-step explanation:
3/10 times 2/3 3 times 2 is 5 and 10 times 3 is 30 5/30 a
Multiply the GCF of the numerical part 3 and the GCF of the variable part x^2y to get
3x^2y.
