Answer:
so all x's have to be added together.
8x+5x+10x+7x=30x
-2+3=1
1dividedby30=30
x=30
hope this helps
Scale = 1cm:3km
Therefore area of lake = 81Km
1:3 = x:81
= 27:81
Therefore the area on map is 27cm
Must click thanks and mark brainliest
Answer:
as a ratio 21:7
if its not as a ratio then it would be Amanda gets 21 and Busi gets 7
X - c = -b
x - 15 = -67
-67 + 15 = -52
x = -52
-52 - 15 = -67
I hope this helped!!!
Z
![\alpha x](https://tex.z-dn.net/?f=%20%5Calpha%20x)
Z=kX
When x=6, z=18,
Finding value of z,
18=k*6
k=3
Z=3X
when x=10,
Z=3*10
Z=30
Part B;
Z
![\alpha \frac{1}{x}](https://tex.z-dn.net/?f=%20%5Calpha%20%20%5Cfrac%7B1%7D%7Bx%7D%20)
z=
![\frac{a}{x}](https://tex.z-dn.net/?f=%20%5Cfrac%7Ba%7D%7Bx%7D%20)
Where x is a constant of proportionality,
when x=3, z=2
2=
![\frac{a}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7Ba%7D%7B3%7D%20)
a=3*2
a=6
When x is 13,
Z=