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Nikolay [14]
3 years ago
15

given that BD is the median of ABD and that ABD is isosceles congruence postulate SSS can be used to prove which of the followin

g? (picture below )

Mathematics
2 answers:
Marta_Voda [28]3 years ago
7 0
Correct answer is    A.  BAD=BCD
Alja [10]3 years ago
3 0

It is given in the question that

BD is the median. So it divides the opposite sides in two equal parts .

Therefore in triangles BAD and BCD,

AB and AC are congruent because of isosceles triangle.

AD and CD are congruent because of the median BD.

And BD and BD are congruent .

So the two triangles are congruent by SSS and the correct option is the first option .

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In ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45. What is the value of the cosine of ∠X to the nearest hundredth?
kotegsom [21]

The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

Step-by-step explanation:

The given is,

                   In ΔWXY, ∠Y=90°

                        XW = 53

                         YX = 28

                        WY = 45

Step:1

             Ref the attachment,

             Given triangle XWY is right angled triangle.

             Trigonometric ratio's,

                              Cos ∅  = \frac{Adj}{Hyp}    

             For the given attachment, the trigonometric ratio becomes,

                              Cos ∅  = \frac{XY}{XW}.....................................(1)

             Let, ∠X = ∅

             Where, XY = 28

                         XW =  53

             Equation (1) becomes,

                                 Cos ∅  = \frac{28}{53}

                                 Cos ∅ = 0.5283

                                        ∅ = cos^{-1} (0.5283)

                                        ∅ = 58.109°

Result:

          The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

             

4 0
3 years ago
9.
Greeley [361]

Answer:

x2 2.75

Step-by-step explanation:

3 0
3 years ago
Please help me.... THX ☺️
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2 years ago
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Nat2105 [25]
What are the first 4 terms of the arithmetic sequence in the graph?
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Y=6x-14 & y=-2x+34 solved in the substitution method
Lyrx [107]

Answer:

x = 6.125

Step-by-step explanation:

y  = -2 + 34

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<u>+2x           +2x       </u>

34 = 8x - 15

<u>+15        +15</u>

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<em><u>x = 6.125</u></em>

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