Answer:
x=175
Step-by-step explanation:
The sum of all the degrees in a triangle is 180. First, you have to rind what the third degree of the triangle is. We will call this y.
85+90+y=180
175+y=180
y=5
The floor is flat, so it will be 180 degrees, therefore, x+y=180. We can substitute 5 in for y, so 5+x=180.
So, x would be 175.
Four times fifteen plus twenty in parentheses
idk if its correct though <span />
Let us suppose the width is x feet
the length is given 12 feet
Perimeter of teh garden = 2( Length + width )= 2( 12+ x)
Fencing required = perimeter of garden
36 = 2( 12+x)
36 = 2*12 + 2x
36 = 24 + 2x
36-24 = 2x
12 = 2x
12/2 = x
6 = x
Width = x feet = 6 feet .Answer .
Answer:

Step-by-step explanation:
<u>Use slide-and-divide method</u>

Answer:

Step-by-step explanation:
Given


Required
Percentage that is not more than 3.24
The above implies that:

Calculate z score




So, the probability is represented s:

From z probability

Hence:
