Answer:
7=x
Step-by-step explanation:
.5(6x-4)=4x-9
3x-2=4x-9
subtract 3x to each side
-2=x-9
add 9 to each side
7=x
Hi There,
<span>Increase 160km by 30%
</span><span>
160 </span>× 130<span> percent = 1
60 </span>×<span> 130/100 =
160 </span>×<span>13/10 =
16 </span>× <span>13 = 208</span>
The numbers: x, y
x·y=-14
x+y=5 ⇒ y=5-x
Substitute y in the first equation by y from second one
x·(5-x)=-14
5x-x²=-14
-x²+5x+14=0
-x²-2x+7x+14=0
-x(x+2)+7(x+2)=0
(x+2)(-x+7)=0
Product is 0 if one of factors is 0
x+2=0 or -x+7=0
x=-2 or -x=-7
x=-2 or x=7
Now back to the equation y=5-x
y=5-(-2) or y=5-7
y=7 or y=-2
The numbers are -2 and 7
Answer:
i believe the first one should be 20 5 since its supposed to be in expanded form but i dont know the second one sorry hope you do good
Step-by-step explanation: