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satela [25.4K]
2 years ago
15

Two rectangular picture frames have the same area of 45 square inches but have different side lengths. Frame A has a length of 6

3/4 inches, and Frame B has a length of 7 1/2 inches. What is the width of frame a and frame b. Without calculating predict which frame has a shorter width explain your reasoning
Mathematics
1 answer:
kozerog [31]2 years ago
3 0

Answer:

Frame A: 6 1/3 inches Frame B: 6 inches

Step-by-step explanation:

Area= length*width

So... 45 / 6 3/4= 6 1/3

45 / 7 1/2= 6

For the prediction you can put... since fram B is a longer length it will have a shorter width than frame A

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How many ways can 8 books be arranged on a shelf? Show all of your work for full credit.
Talja [164]
<h3>Answer:</h3>

There are 40,320 ways, in which 8 books can be arranged on a shelf.

<h3>Solution:</h3>

Here, we are to find the number of ways in which 8 books can be arranged on a shelf. The total number of books is 8 and the way of arranging books is also 8.

  • If one book is placed in the first place, then 7 books will be placed in front of it. If 2 books are placed in the 2nd place, then only 6 books can be placed after that book. This sequence will continue till 1 .

<u>Permutations </u><u>:</u>

  • A permutation is an arrangement of objects in a definite order.

➲<u> P ( n, r )= n ! / ( n - r ) !</u>

  • n = total number of objects

  • r = number of objects selected

The number of ways to arrange 8 books on a shelf will be :

➝ P ( n, r ) = n ! / ( n - r ) !

➝ P ( n, r ) = 8 ! / ( 8 - 8 ) !

➝ P ( n, r ) = 8 ! / 0 !

➝ P ( n, r ) = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 / 1

➝ P ( n, r ) = 40, 320

‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ~ Hence, there are <u>40,320 ways</u> in which 8 books can be arranged on a shelf !

7 0
1 year ago
The scatter plot shows the amount of sleep Aria got the night before a test and her test scores. Which is the best prediction fo
xenn [34]

Answer:

its d gee

Step-by-step explanation:

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7 0
2 years ago
A runner completed a 26.2-mile marathon in 210 minutes.Estimate the unit rate, in minutes per mile. Round your answer to the nea
ELEN [110]

Answer:

The unit rate in minutes per miles be 8.02 minutes per miles .

Step-by-step explanation:

Step 1. 26.2 miles/ 210 mins  = x miles / 1min

1 * 26.2 / 210 = .12 miles / min

Step 2. 26.2. 0.13

÷210.

210. 1

(The amount miles ran in 1 minute is 0.13 miles.)

Step 3. 26.2/210= .125 miles per minute

210/26.2= 8.02 minutes per mile

Step 4. 1) Cross multiply. (26.2 = 210x)

2) Divide 210 from each side. (26.2/210 = .1247619048  ,  210x/210 = x)

3) Round to the nearest 100th. (.12)

4) X=.12

5) .12 miles ran per minute

6 0
2 years ago
The tables below show the values of f (x) and g (x) for different values of x:
dimaraw [331]
<span>2(3)× = 3×+1 is equal when f(x) = g(x).
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3 years ago
How many solutions does the nonlinear system of equations graphed below
yan [13]

Answer:

D. zero

Step-by-step explanation:

Since the graphs do not intersect, there are zero solutions.

6 0
3 years ago
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