Answer:
123 m²
Step-by-step explanation:
Surface area of the object = surface area of the bigger rectangular prism + (surface area of the smaller rectangular prism - area of the smaller rectangular prism base)
Surface area of the bigger rectangular prism:
L = 7 m
W = 3 m
H = 3 m
S.A = 2(LW + WH + LH)
S.A = 2(7*3 + 3*3 + 7*3)
S.A = 102 m²
Surface area of the smaller rectangular prism:
L = 3 m
W = 3 m
H = 1 m
S.A = 2(LW + WH + LH)
S.A = 2(3*3 + 3*1 + 3*1)
S.A = 30 m²
Area of the base of the smaller rectangular prism = L*W
L = 3 m
W = 3 m
Area = 3*3 = 9 m²
Surface area of the object = 102 + (30 - 9)
= 102 + 21
= 123 m²
Answer:
a=3, b=3, c=-9, d=-9
Step-by-step explanation:
Expand the left side, Then combine like terms, then set the term on the left side equal to the term on the right with the same power of x (ex. set ax^3=3x^2) Then a=3. Do this for a,b,c, and d
You would have to subtract 5 on both sides to isolate the variable.
-3x + 5 < 23
- 5 - 5
------------------
-3x < 18
divide both sides by -3.
-3x < 18
x > -6
Hope this helped!
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