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postnew [5]
3 years ago
15

The perimeter of a rhombus is 52 cm and one of its diagonals is 10 cm. Find the length of the other diagonal and the area of the

rhombus. ​

Mathematics
2 answers:
In-s [12.5K]3 years ago
7 0

Good evening ,

Answer:

2nd diagona = 24 cm

rhombus area = 120 cm²

Step-by-step explanation:

Look at the photo below for more details.

________________________________

:)

MAXImum [283]3 years ago
6 0

Answer:

120cm²

Step-by-step explanation:

1)  Perimeter = 4a

            52    = 4a

              a     = 13

2)A = \frac{1}{2}p \sqrt{4a^{2} - p^{2} }

   insert the diagonal (p) and side (a) into the equation

      = 120cm²

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Which expression can be used to determine the length of segment ZY? See image.
mixer [17]

Answer:

\sqrt{8^{2} + 3^{2} }

Step-by-step explanation:

We see that this is a rectangle triangle, and that the ZY side is the hypotenuse.

It's length is then square root of the sum of the squares of the other sides:

hyp = \sqrt{a^{2} + b^{2} }

So, in this case:

ZY = \sqrt{8^{2} + 3^{2} }

The 8 and 3 numbers are easy to get from the graphic... and the order doesn't matter (8² + 3² = 3² + 8²).

That's an easy rule to remember.

I hope it helps.

6 0
3 years ago
Read 2 more answers
Jayna used the distributive property to simplify the expression 4(a + 2) and got(4a + 2). Do you agree with Jayna?
erastovalidia [21]

Answer:

No

Step-by-step explanation:

I would not agree with Jayna because using the distributive property, you can get:

4(a + 2) = 4(a) + 4(2) = 4a + 8

Jayna did not get the right answer because she did not distribute the 4 to the 2 in a + 2 and she only multiplied a by 4.

8 0
3 years ago
nine yards of ribbon are cut into 8 equal pieces. what is the length of each piece of ribbon? write a division expression to rep
Harlamova29_29 [7]
<span>Each piece length will be 1/8 part of the whole piece, so as the total length is 9 yards then we will have that the lengh of each piece is one and eighth yard. The division expression is as follows: Piece length = 9 * 1/8 = 9/8 = (8+1)/8 = 8/8+1/8 = 1 + 1/8 = 1 + 0.125 = 1.125 yards</span>
8 0
3 years ago
Read 2 more answers
1. Adelani has to read a 128.5 pages book in 4.5 days. If she wants to pace herself to finish on time, how many pages does she h
sdas [7]

Answer:

28.5

Step-by-step explanation:

Take the total # of pages to be READ, 128.5, divide by the # of days, 4.5, your answer is pages to read per day.  128.5/4.5 =28.55. Check your answer by multiplying 28.55x4.5 = 128.5

Hope this helps.

pd :)

8 0
3 years ago
Read 2 more answers
Least common multiple 84 , 36, and 15
ollegr [7]

Answer:

1260

Step-by-step explanation:

The least common multiple is the smallest positive number which is a multiple of the two. This means 84, 36, and 15 divide into it evenly. To find the multiple:

  1. We list the prime factors of each number.
  2. We note how many times each occurs.
  3. We multiply each factor the greatest number of times it occurs in a number.

84: 2*2*3*7

36: 2*2*3*3

15: 3*5

LCM: 2*2*3*3*5*7= 1260

4 0
3 years ago
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