<span>The <u>correct answer</u> is:
576 sq. cm.
Explanation:
The surface area of a figure is the sum of the areas of the faces of the figure.
The slant height goes from the apex of the pyramid along a face and is perpendicular to the base at the bottom of that face. This gives us 2 measurements of each triangular face of the pyramid: the height (the slant height of the pyramid is the height of the triangular face), 18 cm, and the base <span>of the triangular face, 12 cm.
The formula for the area of a triangle is A = 1/2bh; using our measurements we have:
A = 1/2(12)(18) = 108 sq. cm.
There are 4 triangular faces on a square pyramid, and each will have an area of 108 sq. cm.; this gives us:
4(108) = 432 sq. cm.
The area of the base is given by length times width, or 12*12 = 144 sq. cm.
This gives us a total surface area of 432+144=576 sq. cm.</span></span>
Answer:
x-int = (1,0)
y-int = (0,4)
Step-by-step explanation:
For the x-intercept, you see that there is a dot indicating that x = 1. So, since the dot is on the line, the y-axis is 0, (1,0).
Then for the y-intercept, you see that there is a dot on the y-axis which means y = 4. So, since the dot is on the line, the x-axis is 0 instead of the y-axis, (0,4).
Hope this helped you and you get it right. I really care about your understanding of it ^^
Sure
Original Equation:
[-5x-16=9x+x-1]
Solve:
[-5x-16=10x-1]
Add (16) to both sides of the equation:
[-5x=10x+15]
Subtract (10x) from both sides:
[-15x=15]
Divide (-15) from both sides:
x=-1
