The coefficients of x are already opposites, so you can simply add the two equations to eliminate x.
... (-7x +3y) + (7x -2y) = (14) + (-14)
... y = 0 . . . . . . . simplify
... -7x + 3·0 = 14 . . . . substitute the value of x into the first equation
.. x = 14/(-7) = -2
The solution is (x, y) = (-2, 0).
Answer:
x = 27
Step-by-step explanation:
(whole secant) * (external part) = (tangent)^2
(x+48)* 48 = 60^2
(x+48)* 48 = 3600
Divide each side by 48
x+48 =75
Subtract 48 from each side
x = 75-48
x=27
Answer:
60
Step-by-step explanation:
The multiples of 10 are 10,20,30,40,50,60,70 etc.
The multiples of 12 are 12,24,36, 48, 60
The smallest number which is a multiple of both 10 and 12 is 60
We know that
[<span>Rachel's new average]=[6*83+97]/7-----> [498+97]/7----> 595/7----> 85
the answer is
</span><span>Rachel's new average score is 85</span>