Answer:
the dilation factor is 2 ... 19*2 = 38
Step-by-step explanation:
D because it has decimals
Step-by-step explanation:
66x-20x=-23-8
46x=-31
x=-31/46
For -(4)^7
the - is not affected by the power of 7
For (-4)to the power of7 is the same as -4 to the power of 7
It is because 7 is an odd number,the - will not change .Therefore
(-4)^7= -(4)^7
But keep in mind that if the power is an even number , the - will change to + when the situation is (-4)
For example,(-4)^4=(4)^4
I am not good at English if there is any things that you feel confused you may ask
200L / 10L
= 20
Since it takes 1 hour to drain 10L, and in order to get 200L you need to drain 10L 20 times, it will take you 20 hours to drain 20L of water
Answer: 20 hours