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3 years ago

What is the fifth term in the geometric sequence described by this explicit formula y=40×(-2)^(n-1)

Mathematics

1 answer:

cupoosta [38]3 years ago

5 0

Answer:

The fifth term is 620

Step-by-step explanation:

y=40×(-2)^(n-1)

The 5th terms means n=5

y = 40 * (-2) ^ (5-1)

= 40 * (-2) ^4

= 40 * (16)

= 640

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A 30inch piece of wood is 3% of a longer piece of wood. How long is the longer piece of wood?

Shtirlitz [24]

Answer:

1,000 inches

Step-by-step explanation:

if 30in is 3% of the longer wood, then 1% would be 10in. 10 times 100 is 1,000.

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3 years ago

Sally had 24 apples,she wanted to put all the apples in 4 bags.How many apples

vazorg [7]

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4 years ago

Aiden is replacing the tile in a rectangular kitchen. The length of the kitchen is nine feet shorter than three times its width,

julia-pushkina [17]

Answer:

Total Cost of tile = $273.28

Step-by-step explanation:

From the given information:

Let the width be = x

Then, the length of the rectangular kitchen is L = 3x - 9

The perimeter is = 6x

Suppose the cost of the tile = $1.69 a square foot.

Then the total costs to tile the kitchen is calculated as follows:

The Perimeter of the rectangle = 2(L + b)

The Perimeter of the rectangle = 2(3x - 9 + x)

The Perimeter of the rectangle = 2(4x-9)

6x = 8x - 18

- 2x = - 18

x = 18/2

x = 9

Thus, the width = x = 9 ft

the length = 3x - 9 = 3(9) - 9

the length = 27 - 9

the length = 18 ft

Area = L × W

Area = (18 × 9)ft

Area = 162 sq. ft.

Cost of a Tile = $1.69 per sq. ft.

Thus;

Total Cost of tile = $1.69 × 162

Total Cost of tile = $273.28

7 0

3 years ago

Read 2 more answers

Todd placed 32 square tiles along the edge of his wooden dining room table, as shown below. Note: Figure is not drawn to scale.

Flauer [41]

Answer:

The diagonal is 421.

Step-by-step explanation:

This is a difficult question. To find the diagonal, you need to find the base and the height of the square. After that, you need to make it a triangle, by using this equation; $A=\frac{1}{2} BH$ (A being area, B being base, and H being height) then find the length of the hypotenuse of the triangle, which I will do for you.