Answer:
£800
Step-by-step explanation:
Use the percentage formula: NV = m x OV
NV is New Value;
m is Multiplier;
and OV is Old Value.
£640 in the New value, so now we have to convert 20% to a multiplier and find out the Old value.
Make OV the subject of the formula: OV = NV / m
So 20% decrease would mean: 100 - 20 = 80 * 100 = 0.80
Divide 640 (NV) by 0.80 (m) and it will give you:
£800
And it would make sense that the OV is higher, and it matches the statement -> as the NV is the decrease.
Answer:16
Step-by-step explanation:
A = 
A = 
A = 
A = 16
(x-1)(x-9)
Hope this helps
Answer:
True for all x.
Step-by-step explanation:
1. Expand 1/3(6-9x)
2-3x
2. Expand -1/5(15x-10)
-3x+2
3. Subtract 2 from both sides.
2-3x-2 = -3x+2-2
4. Simplify.
-3x = -3x
5. Add 3x to both sides.
-3x + -3x = -3x + -3x
6. Simplify.
0=0
Both sides are equal, so it is true for all x.
Answer:
1
Step-by-step explanation:
