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Hitman42 [59]
3 years ago
8

Please help me asap! Thank you! Lines CD and CE are tangent to circle a. If m angle DAE = 140°, what is the measure of angle DCE

?
A - 80°

B - 140°

C - 40°

D - 220°


Plz look at picture

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
4 0

Answer:

The correct answer is option  C - 40°

Step-by-step explanation:

From the figure we can see a circle.

CD and CE are the two tangents from a common external point C.

CD = CE

<u>To find the measure of <DCE</u>

Consider the quadrilateral <DAE.

<D = <E = 90°  [ Angles made with tangent and radius]

m<DCE + m<DAE = 180°

m<DCE = 180- m<DAE

 = 180 - 140

 = 40°

The correct answer is option  C - 40°

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Before conducting some experiments, a scientist mixes 1/2 gram of Substance A with 3/4 grams of Substance B. If the scientist us
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<u>Step-by-step explanation:</u>

 (\frac{1}{2}+\frac{3}{4})÷\frac{1}{8}

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3 years ago
Han has 10 cubes, each 5 inches on a side. A) Find the total volume of Han’s cubes. Express your answer as an expression using a
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Answer:

A) Vol_10_cubes  = 2*(5^4) inch^3

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Step-by-step explanation:

A)The volume of a cube, as all sides are equal:

Vol_cube = (side)^3

side = 5 inches

Vol_cube  = 5^3 inch^3

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10 = 2*5

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B) A cube has six faces, each with area equal to its squared side

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Answer:

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Step-by-step explanation:

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set up an equation, and make it equal to 103:

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3 years ago
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