Answer: in the tens (on top of the 0 when dividing)
Step-by-step explanation:
Elimination
2x+2y=10
2x-3y=5
multiply first equatn by -1
-2x-2y=-10
add to second equation
2x-3y=5
<u>-2x-2y=-10 +
</u>0x-5y=-5
-5y=-5
divide both sides by 5
-y=-1
muitply b-1
y=1
subsitue
2x+2y=10
2x+2(1)=10
2x+2=10
subtract 2
2x=8
divide 2
x=4
x=4
y=1
solution in (x,y) form is
(4,1)
<u />
Answer:
36
Step-by-step explanation:
9*4=36
Answer:
Not a factor
Step-by-step explanation:
If (x - 3) is a factor then f(3) = 0
f(x) = x² - 4x + 30
f(3) = 2(3)² - 4(3) + 30 = 18 - 12 + 30 = 36 ≠ 0
Since f(3) ≠ 0 then (x - 3) is not a factor of f(x)
If f(x)=3/x+2- sqrt x-3 f(7)=?
