Answer:
x = 5 and y= 15
Step-by-step explanation:
3x + 2y = 45
4x - y = 5 (multiple both sides by 2)
or
3x + 2y = 45
8x - 2y = 10
--------------------( add side with side)
11x + 0 = 55
or x= 55/11 = 5
replace x =5 into 4x - y = 5 we have 4*5 - y = 5
20 - y = 5 or y = 20- 5= 15
So x = 5 and y= 15
Have a good day
Answer: 238.95 in²
because this is a regular pentagon
=> the area of the regular pentagon will be 5 times the area of the triangle in the picture.
we have: the area of the triangle is: (11,8.8,1)/2 = 47,79 (in²)
=> the area of the regular pentagon is 5. 47,79 = 238,95 (in²)
Step-by-step explanation:
Answer:
620
Step-by-step explanation:
9.87 is about 10 and 0.509 is about 0.5
(31 * 10) / 0.5 = about 620