Answer:
-18-6x=6+18x
-18-6=18x+6x
24x=-24
x=-1
Step-by-step explanation:
(40+41+41+45+48+48+49+49+49+40)/10 = 460/10 = 46
mean = 46
Answer:
7 hamsters at 5 pesos each and 13 hamsters at 8 pesos each
Step-by-step explanation:
5x + 8y = 139
x + y = 20
x = 20 - y
5x + 8y = 139
5(20 - y) + 8y = 139
100 - 5y + 8y = 139
100 + 3y = 139
3y = 139 - 100
3y = 39
3y/3 = 39/3
y = 13
x + y = 20
x + 13 = 20
x = 20 - 13
x = 7
Answer:
x = -4/3 x =1/2
Step-by-step explanation:
6x^2 +5x - 4 = 0
6 has factors of 3 and 2 and 6 and 1
4 has factors of -4 and 1 and -2 and 2, and -1 and 4
We want +5 in the middle
3* -1 + 4*2 = 5
( 3x+4) ( 2x -1) =0
Using the zero product property
3x+4 =0 2x-1 =0
3x = -4 2x =1
x = -4/3 x =1/2
Answer:
The two triangles are congruent. The second triangle is only turned on it's side. if you look at each side they have a corresponding number of lines comparing each side. if both shapes have a side labeled with 1, 2 or 3 lines those sides are congruent.