Tia made a scale drawing of the White House for her history project. The actual length of the building is 168 feet, and its widt
2 answers:
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Answer:
D) b =
Step-by-step explanation:
First, move all the terms that do not include b to the left side with S:
S = 2ab + 2bc + 2ac
S - 2ac = 2ab + 2bc
Now, factor out 2b from the right side:
S - 2ac = 2b(a + c)
Divide both sides by 2(a + c):
b =
Finally, multiply out the denominator:
b =
The third side is 9 cm long
Let represent one of the equal sides. Then the` other side will be
.
Adding all the length of the sides should give 23. Thus,
This implies that,
We group like terms and simplify to obtain.
Divide through by 4 to get
Hence the length of the other side is
