Answer:
18
Step-by-step explanation:
The question is asking you to evaluate -4.5b, which is a simplified way of saying
-4.5 * b
Since we know that b = -4, we can insert that instead of b.
-4.5 * -4
The two negatives cancel each other out, so you're left with
4.5 * 4 = 18
Answer:
Step-by-step explanation:
1. Calculate the area of the floor
The formula for the area of a trapezoid is
A = ½(a + b)h,
where a and b are the lengths of the parallel sides and h is the distance between them.
However, we are not given the value of h, so we must use Brahmagupta's formula.
If the four sides are a, b, c, and d, the area A is
where s is the semiperimeter
Data:
a = 13 ft
b = 16 ft
c = 13 ft
d = 26 ft
(a) Calculate the semiperimeter
(b) Calculate the area
The area of David's floor is 252 ft².
2. Calculate the number of pieces of material
Susan has 9 books
Step-by-step explanation:
- Step 1: Given the relationship between the number of books that Susan and Marge has, find x.
4 + 2x = 22
2x = 18
x = 18/2 = 9
⇒ Number of books that Susan has is 9
Answer:
x = 36
Step-by-step explanation:
The LCM (least common multiple) of 18 and 12 is 36.
Answer:
answer is in the photo
Step-by-step explanation: