You want to try and get rid of one of the variables ( x or y) so you would multiply the second equation by 2 which would make the x variable -2x which then when added to the first equation would eliminate the x variable.
Answer: c. Multiply the second equation by 2.
Answer:
Step-by-step explanation:
Perimeter of quarter circle = r + r + 

2) d = 2*10 = 20 cm
Perimeter of semicircle = diameter + (1/2) * circumference of circle

3) Perimeter of three-quarter = r + r + (3/4)* circumference of circle

Answer:
A
Step-by-step explanation:
there is a common ratio between consecutive terms , that is
- 12 ÷ - 3 = - 48 ÷ - 12 = - 192 ÷ - 48 = 4
this indicates the sequence is geometric with nth term
= a₁ 
where a₁ is the first term and r the common ratio
here a₁ = - 3 and r = 4 , then
a₈ = - 3 ×
= - 3 × 16,384 = - 49,152
Answer:
B
Step-by-step explanation:
solve equation.
Answer:
A.
Step-by-step explanation: