Answer:

Step-by-step explanation:
The given function is

Observe that, the first two factors are from difference of two squares.


We expand the brackets using the distributive property to obtain;


The above function is now in standard form, since the terms are arranged in descending powers of
.
We need to solve for the height of the tree given two angles and distance between the two observers. See attached drawing for a better understanding of the problem.
We derive to equations using SOH CAH TOA such as below:
sin30 = h / x
sin 45 = h / (100-x)
sin 45 (100-x) = xsin30
70.71 - 0.71x = 0.5x
70.71 = 1.21 x
x = 58.44
Solving for h, we have:
h = xsin30
h = 58.44 sin30
h = 29.22
The height of the tree is 29.22 feet.
"Product" means multiplication
Number of apples we will use the variable "a"
ANSWER: 25a
Answer:
28
Step-by-step explanation:
you add 21, 4, and 3 to find the total
then you find how many are white or gray
7/28= 1/3
1/3 times 84
84 times 1 divided by 3
84/3