1. combine like terms (2x and -7x) to create -5x
2. subtract 5 from each side to create: -5x=10
3. divide both sides by -5
4. x=-2
Make each known side into a ratio like so...
75/6
(Because 75 is the shadow casted by the building, and 6 is the shadow casted by sarah)
and 50/x
(50 is how tall the building is and sarah's height is what needs to be found)
Therefore,
75 50
---- -----
6 x
Do cross products;
50 x 6 = 75 x X
300 = 75x
Divide by 75
x = 4ft
50% is 30, it’s half of 60. 25% is the same as dividing by 4, 60/4 is 15.
The answer for the exercise shown above is the option B, which is:
The explanation is shown below:
To list the powers of the polynomial given in the problem above in descending order, you must write the terms from the highest degree to the lowest degree. You have that the highest degree is
and the lowest degree is
(Because
. Therefore, you have that the correct option is the option B.
Don’t take my word for it but if there’s no x then it might be undefined.
Sorry if I’m incorrect