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3 years ago

The first term of a geometric sequence is 512

Mathematics

1 answer:

Neko [114]3 years ago

5 0

Answer:

Step-by-step explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term r : the common ratio

in this exercice : A1 =512 r = 1/2 n = 8

A8=512×(1/2)^(8-1) = 512×(1/2)^7

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The correct answer is: [A]: " x = 3 " .
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4 years ago

Evaluate the following expression when x = 6 and y = 2:

Liula [17]

Answer:

11/2

Step-by-step explanation:

$\frac{ {x}^{2} + {y}^{3} }{2 + x} \\$

when,

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Now substitute the value we get,

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3 years ago

Which is a scaled copy of Polygon A?Identify a pair of corresponding sides and a pair of corresponding angles. Compare the areas

jonny [76]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the polygon A (and other possible polygons to select from) are not given. So, I will answer on a general term.

Assume that Polygon A is a rectangle of dimension 2ft by 5ft.

$Length = 2ft$ $Width = 5ft$

Possible scaled copies can be gotten by multiplying the dimension of A by the same scale factor.

Take for instance, the scale factor k is:

$k = 3$

A scaled copy of polygon A (say polygon B) is: 6ft by 15ft

This is gotten by:

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$Area = 2ft * 5ft = 10ft^2$

The area of B is:

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See attachment for polygons

Comparison

The area of B is greater than the area of B.

This method can be applied to scale factors

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3 years ago

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Answer:

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Step-by-step explanation:

When you see many more it means subtract

700

⁻636

074

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4 years ago

Please help!

goldfiish [28.3K]

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3 years ago