Answer:
Step-by-step explanation:
Surface area is the total surface. So first, find each surface...two triangles, same size and three rectangles, same size.
So you will have to add each....triangle+triangle+rectangle+rectangle+rectangle.
Area of a triangle = 1/2(b)(h) with b=base and h=height
Plug in knowns 1/2(15)(13)=A
Multiply 15X13=195 Then divide by 2. 195/2=97.5
The area of each triangle is 97.5 yd.
Area of a rectangle = (L)(W) with L=Length and W=Width
Plug in knowns (15)(24)=A Now, multiply
15X24=360
The area of each rectangle is 360 yd.
We need to add two triangles for front and back. and three rectangls.
97.5+97.5+360+360+360=1275
Surface area is 1,275 yd.
well, 2/5 of the distance AB is simply their product, thus 2/5 of AB is just (2/5)AB.
![\bf \stackrel{A}{-7}\stackrel{\textit{7 units}}{\rule[0.35em]{17em}{0.25pt}}0\stackrel{\textit{3 units}}{\rule[0.35em]{10em}{0.25pt}}\stackrel{B}{3} \\\\\\ AB=7+3\implies AB=10~\hspace{7em}\cfrac{2}{5}AB\implies \cfrac{2}{5}(10)\implies 4 \\\\\\ -7\rule[0.35em]{2em}{0.25pt}-6\rule[0.35em]{2em}{0.25pt}-5\rule[0.35em]{2em}{0.25pt}-4\rule[0.35em]{2em}{0.25pt}\boxed{-3}](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7BA%7D%7B-7%7D%5Cstackrel%7B%5Ctextit%7B7%20units%7D%7D%7B%5Crule%5B0.35em%5D%7B17em%7D%7B0.25pt%7D%7D0%5Cstackrel%7B%5Ctextit%7B3%20units%7D%7D%7B%5Crule%5B0.35em%5D%7B10em%7D%7B0.25pt%7D%7D%5Cstackrel%7BB%7D%7B3%7D%0A%5C%5C%5C%5C%5C%5C%0AAB%3D7%2B3%5Cimplies%20AB%3D10~%5Chspace%7B7em%7D%5Ccfrac%7B2%7D%7B5%7DAB%5Cimplies%20%5Ccfrac%7B2%7D%7B5%7D%2810%29%5Cimplies%204%0A%5C%5C%5C%5C%5C%5C%0A-7%5Crule%5B0.35em%5D%7B2em%7D%7B0.25pt%7D-6%5Crule%5B0.35em%5D%7B2em%7D%7B0.25pt%7D-5%5Crule%5B0.35em%5D%7B2em%7D%7B0.25pt%7D-4%5Crule%5B0.35em%5D%7B2em%7D%7B0.25pt%7D%5Cboxed%7B-3%7D)
Answer:
Two negatives together get a positive
Step-by-step explanation:
-9-(-4)
-(-4)
+4
7. 233
8. 4
9. 6
10. 5
11. 4
12. 7
13. 7
