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mixas84 [53]
2 years ago
10

Need help, am confused

Mathematics
2 answers:
DaniilM [7]2 years ago
7 0

Answer:

x = 2.5 ft.  (first option)

Step-by-step explanation:

Apply Thales' Theorem

\frac{DC}{EB} =\frac{AC}{AB}

EB=x

\frac{10}{x} =\frac{8}{2}

x=\frac{(10)(2)}{8} =\frac{20}{8}

x=2.5

Hope this helps

Lunna [17]2 years ago
4 0

Answer:

  • C. 2.7 inches.

Step-by-step explanation:

<u>Missing value looks the same, but it's 0.7 ft. longer than 2 ft.</u>

  • 2 + 0.7 = 2.7

<u>Your answer is 2.7 (C).</u>

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x^2-10x+25=18 \\ \\x^2-10x+25-18 = 0\\ \\ x^2-10x+ 7 =0 \\ \\a=1 , b = -10 , c= 7 \\ \\ \Delta = b^{2}-4ac = (-10)^{2}-4*1*7=100-28 = 72 \\ \\\sqrt{\Delta }=\sqrt{72}= \sqrt{2*36} =\sqrt{36}*\sqrt{2} =6\sqrt{2}

x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{10- 6\sqrt{2}}{2}=\frac{2(5-3\sqrt{2})}{2}= 5-3\sqrt{2}\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{10+ 6\sqrt{2}}{2}=\frac{2(5+3\sqrt{2})}{2}= 5+3\sqrt{2}


Answer : \ x= 5-3\sqrt{2} \ \ or \ \ x = 5+3\sqrt{2}


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3 years ago
The quadrilateral with the following vertices is a
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Answer:

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3 years ago
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Using the properties of arcs and inscribed angles, B is 110/2=55.
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marie made a model (shown below) of the square pyramid she plans to build when she grows up. Find the surface area of the model.
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3 years ago
B-30.45=95.28 what is the answer
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Answer:

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Step-by-step explanation:

<u>Step 1:  Add 30.45 to both sides</u>

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