Answer:
One solution
Step-by-step explanation:
x+y=5
3x-y=-5
Add the equations together will get you:
4x=0
Divide the 0 by 4 to get the x alone will get you
x=0
Answer:
0.075 sq km
Step-by-step explanation:
Given that there is a rectangular field with dimensions of length =300 m and width = 250 m.
We have to calculate area of this rectangle in the units of square kilometres.
Let us convert length and width into km
1000m = 1 km
Hence length = 300/1000= 0.3 km and
width = 250/1000 = 0.25 km.
ARea = length x width = 0.3 x 0.25
=0.075 square km.
Answer:
The number that is a perfect square remains on the outside and the one that isn't, stays on the inside. For example, you can make the number 2 only when the number on the outside is a perfect square. The original number was 4, so it reduced down to 2, and the other number stayed in the radical
Answer:
Mistake -2(x+5)=-2x+10, -2(x+5)=-2x-10
Step-by-step explanation:
7(x-10)-2(x+5)=4x-7+6x-3
7x-70-2x-10=10x-10
5x-80=10x-10
-80+10=10x-5x
-70=5x
-70/5=x
-14=x
Answer: x= 900
Step-by-step explanation:
0.9x + 20 = 830
Make x subject of formula
O.9x= 830 -20
0.9×= 810
x = 900