**Answer:**

part 1 of the question is d ,and part 2 of the question is b.

**Answer:**

18.7

**Step-by-step explanation:**

The Law of Cosines is , where c is the unknown side length of a triangle, a and b are the remaining two side lengths, and C is the angle opposite to side c. To answer this question just plug in the known values:

Simplify:

m≈18.665...

When rounded to the nearest tenth, m=18.7

**Answer: Second option.**

**Step-by-step explanation:**

Given the functions f(x) and g(x):

You need to divide them in order to find asked in the exercise. Then:

Now, it is important to remember that, by definition, the division by zero is not defined. Therefore, the denominator of the function cannot be zero.

Let's find the value of "x" for which the denominator of the function would be zero:

1. You need to make the denominator equal to zero:

2. Finally, you must solve for "x":

Therefore, as you can see, the answer is:

,

**Answer:**

25 – 4.33 = 20.67

7 + (1 - 100) = -92

**Step-by-step explanation:**

First one) Simply use your knowledge of integers and decimals to solve this. You can even start by drawing a number line and practising with that before beginning to do harder problems.

Second one) Just like the first one but use PEDMAS, BEDMAS or BODMAS and make sure to solve the brackets first.

your answer will be 2 inch for the first piece 4 inch for the second piece 20 inch for the last piece