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Tanzania [10]
3 years ago
7

Find the values of x in the isosceles triangle

Mathematics
1 answer:
Wewaii [24]3 years ago
4 0

Answer:

x = sqrt(55)

x = 7.416198487

Step-by-step explanation:

We can use the Pythagorean theorem

The base is 3  (1/2 of 6).  The other leg is x and the hypotenuse is 8

a^2 + b^2 = c^2

3^2 + x^2 = 8^2

9 + x^2 = 64

Subtract 9 from each side

9-9 +x^2 = 64-9

x^2 = 56

Take the square root of each side

sqrt(x^2) = sqrt(55)

x = sqrt(55)

x = 7.416198487

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The angle of rotation at which point A’ coincidences point
anygoal [31]

Answer:

216 degrees

Step-by-step explanation:

Given that ABCDE is a regular pentagon.

Hence each angle would equal = {2(5)-4}/5 right angles

=6(90)/5 =108 degrees

Since regular pentagon rotation will not disturb the shape.

When counterclockwise rotated, if 108 degrees rotated A would become E.

For another 108 degrees A would come to D

Hence angle required for rotation for A to coincide with D = 2(108)

=216 degrees

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3 years ago
2x+3=x+x+3<br> Show your work
Nitella [24]

Step-by-step explanation:

2x+3=x+x+3

add the X's on the right side together.

2x+3=2x+3

subtract 2x from both sides

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subtract 3 from both sides

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5 0
3 years ago
How to write 12/5 as a mixed number
Marat540 [252]

Answer:

2 2/5

Step-by-step explanation:

divide 12 into 5 you get 2.4

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3 0
3 years ago
Read 2 more answers
marge cut 16 pieces of tape for mounting pictures on poster board. each piece of tape was 3/8 inch long. how much tape did marge
Tomtit [17]

Answer:

Total tape used by marge is 6 inches .

Step-by-step explanation:

As given

marge cut 16 pieces of tape for mounting pictures on poster board.

Each\ piece\ of\ tape\ was\ \frac{3}{8}\ inch\ long.

Total tape marge uses = Number of pieces × Each piece length

Total\ tape\ marge\ uses = \frac{16\times 3}{8}

Total tape marge uses = 2 × 3

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Therefore the total tape used by marge is 6 inches .

8 0
3 years ago
Read 2 more answers
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