Answer:
the solution is (-4, 2)
Step-by-step explanation:
6x + 8y = -8
x + 4y = 4
... can be solved using elimination by addition and subtraction, among other methods. Multiply the second equation by -2 to obtain
6x + 8y = -8
-2x - 8y = -8
Combining these results in
4x = -16. Thus, x = -4.
Substituting -4 for x in x + 4y = 4 results in
-4 + 4y = 4, or 4y = 8, or y = 2
Then the solution is (-4, 2)
About 3,000 books because 105 * 28 = 2940
and 2940 rounded to the nearest thousand is 3000. Hope this helps.
Answer:
x = 10 and y = 2
Step-by-step explanation:
multiply first equation by 5 and 2nd equation by 3 then subtract equation 1 and 2, we get,
10x+15y= 130
9x+15y=120
( -) (-) (-)
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x= 10
substituting the value of x in equation 1 we get
2x + 3y = 26
2*10 + 3y = 26
3y = 26-20
y =6/3
y= 2.i hope this helps
8 ) 712
8 goes into 71 8 times; the product of 8 and 8 is 64.
Subtracting this 64 from 71, we get 7, to which we append 2: 8 ) 72.
8 divides evenly into 72: 9.
Thus, the desired quotient is 89.