D. It is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.
A little bit of trained eyeballing can help here. Let me tell you how I saw the answer without any computation.
Remember that the expansion of a squared binomial is
So, the square of a binomial has the following properties, which you can easily spot:
- It has three terms
- Two of them are perfect squares
- The third is twice the product of the two roots.
Well, in this case we do have three terms, and indeed is the square of 11x, and 1 is the square of itself. The only thing we have to check is that 22x is twice the product of 11x and 1, which is true.
So, the answer is
If you want to see some explicit calculations, just use the quadratic formula
to see that there is a double solution , and then use the formula
to come to the same conclusion.
Answer:
Step-by-step explanation:
a)
S=31000+1500Y
Where S is salary and Y is # of years
b)
Salary in 5 years;
=31000+1500(5)
=31000+7500
=38500
Answer:
A
Step-by-step explanation:
Convection is how the heat moves around and radiation is how it heats up.
In the equation of a straight line(when the equation is written as "y=mx+b), the slope is the "m" that is mutiplied on the x and the b is the y intercept where the line crosses the y axis