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AleksAgata [21]
3 years ago
8

Given isosceles right triangle CDE with m∠D = 90, sin C = sin D

Mathematics
1 answer:
Butoxors [25]3 years ago
7 0

Answer:True

Step-by-step explanation:

Given

\angle D=90^{\circ}

For isosceles triangle , CD=DE (x=y)

from figure,

\sin C=\dfrac{y}{H}\\\\\sin D=\dfrac{x}{H}\\\\\text{CD=DE}\\\\\therefore \sin C=\sin D=\dfrac{x}{H}=\dfrac{y}{H}

Thus, the given statement is true

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Carlos used 6 boards to build 2/3 of a front porch. How many boards will Carlos use to build the whole porch? Express your answe
antiseptic1488 [7]

Answer:

9 boards

Step-by-step explanation:

2/3 of the porch= 6 boards

so to figure out how much one third of the porch needs you find half of what it takes to fill in 2/3 of the porch and you get 3.

so 3=1/3 of the porch

then you simply do 3times 3 or 3+3+3 and you get 9

so it takes 9 boards to fill the whole porch

8 0
4 years ago
Please help me find how to solve . The area of one is 196 with a side length of 21 in , the other has a side length of 15in
zimovet [89]

Answer:

Area =100 in^2

Step-by-step explanation:

scale factor of the triangles is :15/21=5/7

if two similar shape has a scale factor a/b then the area is a^2:b^2

area of first shape/area of second shape=5/7

x/196=(5)²/(7)²

49x=4900

x=4900/49=100

area=100

check: 100/196=25/49=a^2/b^2

i hope it is right

8 0
4 years ago
Please help me with this question <3 ASAP!
sertanlavr [38]

Answer:

54°

Step-by-step explanation:

Opposite angles of a parallelogram are congruent, so;

9x+9=8x+14 \\ \\ x=5 \\ \\ m\angle S=9(5)+9=54^{\circ}

6 0
2 years ago
Read 2 more answers
WORTH 95 points K12 pls help im trying to go to spiderman movie with friend i have 15 mins
Lesechka [4]

Answer:

see below

Step-by-step explanation:

1st pic: m>-64

2nd pic: x≤2\frac{1}{2}

3rd : x>-1.4, use the 4th arrow for this (not filled in circle starts at -1.4)

4th: z>1.25 use 4th arrow again

5th: p ≥ 4 use the 2nd arrow

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Can someone help me please
Ivanshal [37]

Answer:

I believe the answer is 2. You may want to get a second opinion though because Im not sure

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4 years ago
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