Answer:


Step-by-step explanation:
Given the simultaneous equations


Subtract the equations







∵ 














Similarly,








Answer:
no (-4,-4) isn’t a solution to the system
Step-by-step explanation:
Cuz -4 is not greater than 28
What is the last option I can’t see it
Answer:
Step-by-step explanation:
Alright, lets get started.
The original photo size is 4 inches wide and 6 inches tall.
So, the ratio of width and height will be = 
The new enlarged photo will be of the same ratio means 2:3
The width of enlarged photo is given as 12 inches.
Suppose new height of enlarged photo is H, so

Cross multiplying

Dividing 2 in both sides
inches
So the height of new enlagred photo will be 18 inches. : Answer
Hope it will help :)
87.2 - 25.9 = 87.2 - 26 = 61.2 + 0.1 = 61.3