Answer:
x=y/9
Step-by-step explanation:
The answer is 221 divided by 13 equals 17 theres 17 people in each group
7x9=63/2=31.5
31.5x4= 126
7x7=49
126+49=175
The surface area of the pyramid would be 175cm^2
Answer:
Step-by-step explanation:
<u>Given equation of the line:</u>
<u>Use two points from the graph of the second line to find its equation:</u>
<u>Use double intercept form to find the equation:</u>
- x/a + y/b = 1
- x/ (-6) + y/(- 2) = 1
- 2x + 6y = - 12
Now we have the system, solve it by elimination.
<u>Multiply the first equation by 2 and the second equation by 3 and add up:</u>
- 2(- 3x - 9y) + 3(2x + 6y) = 2*18 + 3*(- 12)
- -6x - 18y + 6x + 18y = 36 - 36
- 0 = 0
All terms are cancelled, it means the equations are same, the lines overlap and there is infinite number of solutions.
Answer: 7+-2
Than it would be 5