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polet [3.4K]
4 years ago
5

Permutations and combination math 30 question!

Mathematics
1 answer:
Nimfa-mama [501]4 years ago
5 0

Answer:

The answer is 2,600

Step-by-step explanation:

nCr=n!/r!(n-r)!

26C3=26!/3!(26-3)!

=26!/3!(23!)

= 2600

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Write an equivalent expression for 3x+12+7x+x
Anit [1.1K]
<span><span><span><span>3x</span>+12</span>+<span>7x</span></span>+x</span>Combine Like Terms:<span>=<span><span><span><span>3x</span>+12</span>+<span>7x</span></span>+x</span></span><span>=<span><span>(<span><span><span>3x</span>+<span>7x</span></span>+x</span>)</span>+<span>(12)</span></span></span><span>=<span><span>11x</span>+12</span></span>Answer:<span>=<span><span>11x</span>+<span>12</span></span></span>
5 0
3 years ago
The SUM OF THE INTERIOR ANGLES of a regular polygon is 540°. How many sides does the polygon have? Show all work
liubo4ka [24]

Answer:

5

Step-by-step explanation:

number of sides = (sum of interior angles / 180) + 2

(540 / 180) + 2 = 5

7 0
3 years ago
X ^ 2 + 4x - 7 = 0<br><br> Solve using the Quadratic Formula
aalyn [17]

There's a special case of the quadratic formula called the Shakespeare Quadratic Formula (2b or -2b) that applies when the linear coefficient is even.

x^2-2Bx + C \textrm{ has zeros }x = B \pm\sqrt{B^2 - C}

If you're planning on solving a lot of quadratic equations quickly, it's good to know.

Here we have

x^2 + 4x - 7 = 0

so

x = -2 \pm \sqrt{2^2 - -7}

x = -2 \pm \sqrt{11}

8 0
3 years ago
48 qt equals how many gallons
Fynjy0 [20]

Answer:12 gallons

Step-by-step explanation:

48/4=12

8 0
3 years ago
Read 2 more answers
Find the perimeter and area of the figure. Round to the nearest tenth if necessary. 33.7 mm; 108 mm2 33.7 mm; 54 mm2 30.7 mm; 50
Deffense [45]

Answer:

Perimeter: 33.7 mm

Area: 54 mm

Step-by-step explanation:

If you do 12 + 9.7 + 12 you will get the perimeter, and to get the area you would use the formula A = \frac{1}{2} x base x height. Since the base is 12 and the height is 9, you would do 12 x 9 x 0.5 to get 54 mm for the area of the triangle.

8 0
3 years ago
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