Answer:
Length of base (a) = 5 units
Total Surface Area of Pyramid (T.S.A.) = ?
Now,
T.S.A. = Area of four triangles + Area of base
=
≈ ![68.301sq. units](https://tex.z-dn.net/?f=68.301sq.%20units)
Answer:
the height is 9.8 cm
Step-by-step explanation:
71.54 ÷ 7.3 = 9.8
Answer:
Down below
Step-by-step explanation:
Use the binomial theorem for the second power, which we find that:
![(a+b)^2=a^2+2ab+b^2\\(a-b)^2=a^2-2ab+b^2](https://tex.z-dn.net/?f=%28a%2Bb%29%5E2%3Da%5E2%2B2ab%2Bb%5E2%5C%5C%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2)
Here
![a=4x\\b=3](https://tex.z-dn.net/?f=a%3D4x%5C%5Cb%3D3)
we use the second formula.
So, we get:
![(4x-3)^2=(4x)^2-2*3*4x+3^2\\16x^2-24x+9](https://tex.z-dn.net/?f=%284x-3%29%5E2%3D%284x%29%5E2-2%2A3%2A4x%2B3%5E2%5C%5C16x%5E2-24x%2B9)
(-7) negative 7 i had some of these questions in pre-algrebra
JD