1) 4n
The arithmetic sequence is going up in 4’s (1 x 4 = 4, 4 x 4 = 16)
Therefore the answer is just 4n
2) 0.5n (1/2n)
The arithmetic sequence is going up in 0.5’s (1 x 0.5 = 1/2, 1/2 x 0.5 = 1/4)
Therefore the answer is just 0.5n or if you need it in a fraction it is (1/2n)
3) -7n
The arithmetic sequence is going up in -7’s (7 x -7 = -14, -14 x -7 = 28)
Therefore the answer is just -7n
Answer:
x=3
Step-by-step explanation:
Sub y=x-1 into 2x+y=8.
You will get 2x+x-1=8.
Simplify 3x-1=8
Solve 3x=9
x=3
Area: 60
Explanation: we know the height of the square therefore we know all of its dimensions. We can multiply 3x2 to get the height, which is 6. And add 3 to 7 to get the length, which is 10.
The formula for area is <em>A=wl</em>
<em>A=6(10)</em>
<em>A=60</em>
Answer:
x=5
Step-by-step explanation:
cross multiply
45=9x
solve for x by dividing 9 to get x alone
5=x
4y>12
y>12/4
y>3
5>3
6>3
7>3
Therefore, the solution is {5,6,7}
