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lina2011 [118]
3 years ago
15

Please help! Correct answer only!

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
6 0

Answer:

<em>Probability ≈ 0.3571</em>

Step-by-step explanation:

Consider the steps below;

Total Number of Outcomes - 9C4,\\9 ! / 4 ! * ( 9 - 4 ),\\9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 / 4 * 3 * 2 * 1 * 5 * 4 * 3 * 2 * 1,\\\\Total Outcomes = 126,\\\\Number of Outcomes - 3C2 * ( 6C2 ),\\3C2 = 3,\\6C2 = 15,\\\\Number of Outcomes = 3 * 15 = 45,\\\\Probability; 45 / 126 = ( About ) 0.3571

<em>Solution; Probability ≈ 0.3571</em>

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The perimeter of a rectangle is 100 yd. if its width is four times its length, what is the area?
7nadin3 [17]

<span>Length = l</span>

<span>
Width = w</span>

<span>
Perimeter = p = 100

</span>

<span>Perimeter of rectangle = 2(l+w)</span>

<span>
100 = 2 (4w + w)</span>

<span>
100 = 2(5w)</span>

<span>
100 = 10w</span>

<span>
100/10 = w</span>

<span>
10 = w</span>

<span>
w =  10



Area of rectangle = length * width</span>

<span>
a = l*w</span>

<span> a = 4w*w</span>

<span>
a = 4w^2............(1)</span>

<span>
Put the value of w in (1)</span>

<span>
a = 4(10)^2</span>

<span>
a= 4(100)</span>

<span>
a = 400 yd^2</span>

4 0
3 years ago
Help please and im writing this since it needs 20 characters
Marat540 [252]

Answer:

65% !

Step-by-step explanation:

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5 0
3 years ago
the perimeter of a rectangle is 34 units. it’s width is 6.5 units. write the equation to determine the length of the rectangle
zubka84 [21]

Answer:

4 units

Step-by-step explanation:

Perimeter formula is P = 2L + 2W.  Here P = 34 units = 2L + 2(6.5 units).

Reducing this, 17 = L + 13.  Then L = 4 units.


4 0
3 years ago
20 POINTS!!! DO NOT GIVE ME THE ANSWER TO THE QUESTION! Please just tell me how I can find the answer.
Sauron [17]

Answer:

Divide the weight of the book 2.5 lb by the 2.2 lb/kg

Step-by-step explanation:

2.5 ÷ 2.2

6 0
2 years ago
The work of a student to solve the equation 2(5y − 2) = 12 + 6y is shown below:
jolli1 [7]
We know that Step 1 is correct, because it is just a restatement of the equation. Therefore, we can eliminate Step 1:

2(5y – 2) = 12 + 6y

In Step 2, the student tried using the Distributive Property. The Distributive Property can be written as one of the two following formulas:

a(b + c) = ab + ac
a(b – c) = ab – ac

In this case, we'll use the second formula. Substitute any known values into the equation above and simplify:

2(5y – 2) = 2(5y) – 2(2)
2(5y – 2) = 10y – 4

In Step 2, the student calculated 2(5y – 2) to equal 7y – 4. However, we have just proven that 2(5y – 2) is equal to 10y – 4.

The student first made an error in Step 2, and the correct step is:

Step 2: 10y – 4 = 12 + 6y

I hope this helps!
8 0
3 years ago
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