Answer:
8
Step-by-step explanation:
9-5÷(8-3)×2+6
4÷4×2+6
1×8
=8
Step-by-step explanation:
Step-by-step explanation:
1. The first step has 1 block. The second step has 2 blocks. The third step has 3 blocks. So the nth step needs n blocks.
2. A staircase with n steps has 1 + 2 + 3 + ... + n steps. This is an arithmetic sequence where the first term is 1 and the last term is n. The sum of the first n terms is:
y = n/2 (1 + n)
3. Solve for n.
2y = n (1 + n)
2y = n² + n
0 = n² + n − 2y
Using quadratic formula:
n = [ -1 ± √(1 − 4(1)(-2y)) ] / 2
n = [ -1 + √(1 + 8y) ] / 2
Answer:
<em>X = - 2</em>
<em>Hope</em><em> </em><em>it's help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em> </em><em>^_^</em>
Answer:
The linear distance between the two points is the square root of the sum of the squared values of the x-axis distance and the y-axis distance. To carry on the example: the distance between (3,2) and (7,8) is sqrt (52), or approximately 7.21 units.
Step-by-step explanation: