1. A train has 20 carriages, and each carriage seats 8. When the train is full, it holds z people. 2. A room is x metres long and y metres wide. If the length were halved, the perimeter of the floor of the room would be p metres.
3. p new pench + s pounds = x pounds

kuku

Step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: