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LenKa [72]
2 years ago
6

Can anyone help me out with proofs ? If B is midpoint of AC and D is the midpoint of CE prove BD is parallel AE.

Mathematics
2 answers:
Luden [163]2 years ago
7 0
Could you include a picture of the question and diagram
bearhunter [10]2 years ago
5 0
Um I don’t really know
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(a) Are triangles the congruent? Write the congruency statement.
Maru [420]

Answer:

Part A) Yes , the triangles are congruent

Part B) The side-angle-side (SAS) theorem

Part C) The perimeter of  ∆PQR is 17\ ft

Step-by-step explanation:

Step 1

we know that

The side-angle-side (SAS) theorem, states that: If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

so in this problem

Traingle PQR and Triangle STU are congruent by the SAS Theorem

because

m<PQR=m<STU -------> included angle

PQ=TS

QR=TU

Step 2

<u>Find the value of y</u>

we know that

If the triangles are congruent

then

The corresponding sides are equal

so

PR=SU

substitute

(3y-2)=(y+4)

(3y-y)=(2+4)

(2y)=(6)

y=3\ ft

PR=3y-2=3(3)-2=7\ ft

SU=y+4=(3)+4=7\ ft

so

PR=SU

Step 3

Find the perimeter  ∆PQR

Remember that

The perimeter of  ∆PQR is equal to the perimeter  ∆STU

The perimeter is equal to

P=PQ+QR+PR

substitute the values

P=4+6+7=17\ ft

6 0
3 years ago
Verify that (a+b)+c = a+ (b+c) by taking a = -8 , b = (-8/11) , c = (-8/12)
gogolik [260]

Answer:

Step-by-step explanation:

(-8+-\frac{8}{11} ) + (-\frac{8}{12}) = -\frac{96}{11} + (-\frac{2}{3}) = -\frac{288 + 22}{33}) = -\frac{310}{33}\\ (-8) + (-\frac{8}{11} + (-\frac{2}{3})) = (-8) + (-\frac{46}{33})= -\frac{310}{33}

6 0
3 years ago
Read 2 more answers
If I have a 92,70,41 what's my average grade?
Alexandra [31]

Answer: Around 67%

Step-by-step explanation:

92+70+41=203

203/3=67 2/3

Around 67%

8 0
2 years ago
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I have no idea how to slove this 5x-5 =2×+97​
galina1969 [7]

Answer: x=34

Step-by-step explanation:

1. You subtract 2x from 5x on the other side to get rid of the 2x leaving you with 3x.

2. Then you add 5 to 97 to get rid of the -5, giving you 102 on the opposite side.

3. divide 102 by 3x giving you 34.

5x-5=2x+97

-2x     -2x

3x-5=97                                                                      <u><em>X=102</em></u>

   +5  +5

3x=102

x/3   102/3

4 0
3 years ago
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Use the diagram to estimate the perimeter, rounding each number to the nearest hundred
icang [17]
5500 ft.
1700. ft.
1600. ft.
5500. ft.
7 0
3 years ago
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