Answer:
i think the answer is 7
Step-by-step explanation:
The best way to approach a word problem like this
is to break it down into pieces, so we can understand it fully.
In this problem, we have a number, which we don't know.
We can use any variable to represent it.
So let's use the variable <em>n</em> to represent it.
"Two less than three times a number" means 3n - 2.
A common mistake is for students to put 2 - 3n.
However, the word "less than" switches the order around.
So we have 3n - 2 = 19.
Solving from here, we add 2 to both sides to get 3n = 21.
Now divide both sides of the equation by 3 and we have n = 7.
So the number is 7.
Answer:
b. 3
Step-by-step explanation:
Answer:
12.21ft³
Step-by-step explanation:
This problem bothers on the mensuration of solid shapes, square based pyramid.
Volume of square based pyramid is expressed as
V= a²(h/3)
Given data
Perimeter p = 7.3ft
Height h= 11.1ft
Since the shape has a square base let us solve for the length of each side
Perimeter of square p = a+a+a+a
p= 4a
7.3= 4a
a= 7.3/4
a= 1.83ft
Substituting our given data we have
Volume = 1.83²(11.1/3)
V= 3.3*3.7
V= 12.21ft³
