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
The correct answer would be 2/14 and 3/21. They all would come out to 1/7.
1/7*2=2/14
1/7*3=3/21
Step-by-step explanation:
you are really struggling with such simple things ? you only need to type it into your calculator, and you have your answer in 2 seconds.
instead you are posting the question here, then you wait, if there is an answer, then you copy the answer back to your work ...
so, please tell me, what is your real problem with these questions ?
there are 52 weeks in a year.
instead of 2 bottles of $15 each she now only buys 1 bottle of $15 per week.
she saves $15 per week (one bottle instead of 2).
so, in a year she saves
15×52 = $780
Answer:
15,300 + 18750 + 13,500 + 23,400 +19500 = 90,450
Step-by-step explanation:
divide all the numbers by 100, then multiplying by 3