A solid is composed of squares and equilateral triangles. Its net is shown below: A triangular prism and its net are shown. The net is three squares with side length 7 units. Attached above and below the middle square are equal sized triangles.

The area of each triangle is 21 square units. The surface area of the triangular prism is square units. (Input whole number only.)

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

translate k to n and reflect across the line containing jk.

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for