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natulia [17]
3 years ago
15

0.81 repeating decimal into a fraction

Mathematics
1 answer:
Daniel [21]3 years ago
5 0

Answer:81/100

Step-by-step explanation:

0.81

0.0 tenths

0.00 hunderts

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Someone please help me i’m so llst
kicyunya [14]

1+2 that what it is im juts joking idek how to solve that

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3 years ago
What is the unit rate of y=0.75x
Elodia [21]
The unit rate is 0.75
7 0
3 years ago
A reflection is a type of transformation in which a figure is: Flipped OR Turned
klasskru [66]

Answer:

flipped

Step-by-step explanation:

A reflection is a transformation representing a flip of a image. images can be reflected in a plane, line, and point. When reflecting a image/figure in a line or in a point, the image is congruent to the preimage. A reflection maps every point of a figure to an image across a fixed line.

6 0
3 years ago
Suppose ten students in a class are to be grouped into teams. (a) If each team has two students, how many ways are there to form
ValentinkaMS [17]

Answer:

(a) There are 113,400 ways

(b) There are 138,600 ways

Step-by-step explanation:

The number of ways to from k groups of n1, n2, ... and nk elements from a group of n elements is calculated using the following equation:

\frac{n!}{n1!*n2!*...*nk!}

Where n is equal to:

n=n1+n2+...+nk

If each team has two students, we can form 5 groups with 2 students each one. Then, k is equal to 5, n is equal to 10 and n1, n2, n3, n4 and n5 are equal to 2. So the number of ways to form teams are:

\frac{10!}{2!*2!*2!*2!*2!}=113,400

For part b, we can form 5 groups with 2 students or 2 groups with 2 students and 2 groups with 3 students. We already know that for the first case there are 113,400 ways to form group, so we need to calculate the number of ways for the second case as:

Replacing k by 4, n by 10, n1 and n2 by 2 and n3 and n4 by 3, we get:

\frac{10!}{2!*2!*3!*3!}=25,200

So, If each team has either two or three students, The number of ways  form teams are:

113,400 + 25,200 = 138,600

6 0
3 years ago
A vacant city lot is being turned into a neighborhood garden. The neighbors want to fence in a triangular section of the lot and
ozzi

9514 1404 393

Answer:

  17 ft, 27 ft, 20 ft

Step-by-step explanation:

Let s represent the length of the shortest side. The the longest side is (2s-7) and the third side is (s+3). The perimeter is the sum of the side lengths:

  64 = s +(2s -7) +(s +3)

  64 = 4s -4 . . . . . . . . . . . collect terms

  16 = s -1 . . . . . . . . . . divide by 4

  17 = s . . . . . . . . . add 1

  2s -7 = 2·17 -7 = 27 . . . . . the length of the longest side

  s +3 = 17 +3 = 20 . . . . . . . the length of the third side

The side lengths are 17 feet, 27 feet, and 20 feet.

8 0
2 years ago
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