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juin [17]
2 years ago
15

A and b are positive integers and a-b=2 ... Evaluate the following:

Mathematics
1 answer:
lana [24]2 years ago
5 0

Answer:

Step-by-step explanation:

a-b=2

\frac{27^{\frac{1}{3} b} }{9^{\frac{1}{2}a } } \\=\frac{(3^{3}) ^{\frac{1}{3} b} }{(3^{2} )^{\frac{1}{2} a} } \\=\frac{3^b}{3^a} \\=3^{b-a} \\=3^{-(-b+a)} \\=3^{-2}\\=\frac{1}{3^2} \\=\frac{1}{9}

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Fran has a poster that measures 3/4 square yard in area the length of the poster is 1/3 yard what is the width of the poster
Harrizon [31]

Answer:

9/4 yards

Step-by-step explanation:

A poster is a rectangle.

Area of rectangle = Length × Width

Given:

Area = 3/4 yd

Length = 1/3 yd

Substitute the given values to the equation.

3/4 = 1/3 × w

3/4 = 1/3w

3/4 ÷ 1/3 = w

3/4 × 3/1 = w

9/4 = w

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Bella has 40 coins, all nickles and quarters, worth $7.60. How many nickles and quarters does she have?
Anestetic [448]

Answer:

28 quarters and 12 nickles

Step-by-step explanation:

How many quarters goes into 7 dollars? 28, because there is 4 in each dollar.

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natima [27]

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4 0
2 years ago
At another theater, workers have to cut a new trap door. The door can be no more than 137 square feet in area, with whole-number
otez555 [7]

Answer:

Step-by-step explanation:

Given:

trap door = 130 square feet.

1st item: 6ft 5in wide & 8ft 9in long

⇒ (6ft * 12 in) + 5 in & (8ft *12 in) + 9 in

⇒ 77inches by 105 inches

⇒ 8,085 square inches

2nd item: 13ft 4in wide & 7ft 8in long

⇒ (13ft * 12in)+ 4 in & (7ft *12in) + 8 in

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⇒ 14,720 square inches

3rd item: 5ft 6in wide & 12ft 4in long

⇒ (5 ft * 12in) + 6 in & (12ft * 12in) + 4in

⇒ 66 inches by 148 inches

⇒ 9,768 square inches

130 square feet convert to square inches.

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