3x(2) + 2(2x - 20) = 16 - 2x(2)
6x + 4x - 40 = 16 - 4x
10x - 40 = 16 - 4x
14x - 40 = 16
14x = 56
x = 4
Hope this helps! ;)
Answer:
Mostly correct
For Q3, you are doing great, you remembered that negative numbers can happen if the exponent is an odd number.
For Q4, I think you were confused with the fractions,
4(i)
![(\frac{2}{3} )^{4} = (\frac{2^{4}}{3^{4}}) = (\frac{16}{81}) =0.198](https://tex.z-dn.net/?f=%28%5Cfrac%7B2%7D%7B3%7D%20%29%5E%7B4%7D%20%3D%20%28%5Cfrac%7B2%5E%7B4%7D%7D%7B3%5E%7B4%7D%7D%29%20%3D%20%28%5Cfrac%7B16%7D%7B81%7D%29%20%3D0.198)
4(ii) is also wrong but I'll let you try to fix it yourself following what I given you for 4(i). You should get 1/64
Hope this helps!
Answer: $1040
A = P + I
A = Total
P = Principal
I = Interest
First find the total amount
A = 640(4)(9)
A = 23040
Plug In the Numbers
23040 = 22000 + I
Substract 22000 on both sides
I = $1040
Answer:
350
Step-by-step explanation:
Nearest hundred: 300
Nearest whole number: 350
Hope this helped!