The surface area of square pyramid is the sum of the area of all its sides.
If l is the slant height and base is s each then surface area of pyramid is given by:
Surface area = s2+2xsx l
From the given figure in the question:
S=6 cm ,l= 8cm.
Substituting these values in surface area formula we have:
Surface area = 62+2x6x8
Surface area = 36+96
Surface area =132cm2
The like terms are 23y & 2y and 7x & x because they have the same variables
We can write the domain and range in interval notation which uses values within brackets to describe a set of numbers in interval notation we use a square bracket [ when the set includes the endpoint and a parenthesis ( to include that the endpoint is either not included or the interval is unbounded for example if a person has $100 to spend he or she would need to express the interval that is more than 0 and less than or equal to 100 and write (0, 100]. We will discuss interval notation in greater detail later
7) We are given

. Recall that e is a real, albeit irrational, number, and it is given that G is the final number of bacteria, A is the initial, t is the time.
We want to solve for t when G = 700 and A = 4.
We substitute into the equation and get

, which is

.
To solve for t, we need to remember that the natural logarithm is the inverse of an exponent with base e. We take the ln of both sides like so.

8) We are solving the equation for t when P = 5,000, r = 2% = 0.02, n = 12 (it's compounded 12 times in a year), and A = 10,000.

We first divide both sides by 5,000. Then, we take the natural log (ln) of both sides and simplify to solve for t.
t = 34.686 years
(1/2)x +y = 3 (equation 1)
2x +4y = 12 (equation 2)
((1/2)x +y = 3) x4
= 2x +4y = 12
2x +4y = 12
-
2x +4y = 12
= nothing
answer is B infinitely many solutions as the lines are stacked on top of another.