I can't help really, in terms of showing steps because I haven't been taught this yet..
but using an online calculator... I found that x ≤ 20.
Graph:
|-----------------|-----------------|
-20 0 20
Answer:
x=3cm
Step-by-step explanation:
We have three figures.A triangle(8 by X+3).In it we have another triangle(4 by x)and a trapesium
thus that means the area of the trapesium+area of small triangle=area of big triangle.
1)Area=1/2lengthxwidth. =1/2×8×(x+3)
=4(x+3)
=4x+12cm³
2)Area=1/2lengthxwidth. =1/2×4×x
=2x
3)area=1/2(a+b)h
=1/2(x+3+x)×4
=1/2×4(2x+3). (area of trapesium)
=2(2x+3)
=4x+6cm³
thus:
2x+4x+6=4x+12 put like terms together
2x+4x-4x=12-6
2x=6 divide both sides by 2
x=3cm
Answer:
0.1-0.2 is a change of 100% as it is doubled.
Answer:
Father age is 40 and Son age is 16
Step-by-step explanation:
Let Father be x and Son be y.
If their ratio of their age is 5:2 then
Find Y:
2x = 5y
- x = 5y/2
- 5y/2 = y+24
- 5y= 2y + 48
- 5y-2y = 48
- 3y=48
- y=48/3
- y = 16
Find X
- x=y+24
- x=16+24
- x=40