HELP PLEASEEEEE THIS WAS DUE 17 DAYS AGO!!!!
2 answers:
Answer:
x= 2, y= 1
Step-by-step explanation:
x= 2y
2x +5y =9
substitute x
2 *2y +5y = 9
4y +5y = 9
9y = 9
y =1
x= 2*y = 2*1= 2
Answer:
x= 2
y=1
Step-by-step explanation:
2*2y+5y=9
y=1
x=2*1
x=2
(x,y) = (2,1)
Check:
2=2*1
2*2+5*1=9
2=2
9=9
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Answer:
1.167
Step-by-step explanation:
4/5 + 2/3 + 7/10
LCM 5 * 3 * 2 = 30
24/30 + 20/30 + 21/30
65/30 = 1 5/30 = 1 1/6 = 1.167
50 times 30 is 1500 and 9 times 8 is 72 added is 1572
Answer:
1.............I hope its help
-4x + y = 6
-5x - y = 21
add both of them
-9x = 27
x = -3
(-4*-3) + y = 6
-12 + y = 6
y = 18
Answer: one solution
Step-by-step explanation:
