Answer:
Step-by-step explanation:
George: x
Alex: x + 12
Carl: 3(x+12)
3x+36+x+x+12= 68
5x + 48 = 68
5x = 20
x = 4; George's age
4 + 12 = 16; Alex's age
3(4+12)= 3(16)= 48; Carl's age
George to Alex: 4:16 = 1:4
Alex to Carl: 16:48= 1:3
George to Carl 4:48= 1:12
Carl to Alex: 48:16 = 3:1
Answer:
Step-by-step explanation:
Plug (-1,5) into the equation y = 2x+7
5 = 2(-1)+7
5 = -2+7
5 = 5
The equation holds true, so (-1,5) is a solution to y = 2x+7
Answer:
Step-by-step explanation:
umm add divide or multiply both numbers
Do the power rule first in the first expression then add the answer on the second expression do 4 squares add 5 then subtract the two numbers
Answer:
8
Step-by-step explanation:
finding the area is h x l x 1/2. The h is 4 and the l is also 4. That multiplied is 16. Multiply that by 1/2 and you get 8
