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Ghella [55]
2 years ago
14

What is the answer to number 1.Please explain answer and show working out. Thanks

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

3(4y+5b)

Step-by-step explanation:

12y + 15b = (3x4y) + (3x5b) = 3(4y+5b)

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What is the sum of the geometric series 2^0 + 2^1 + 2^2 + 2^3 + 2^3 + 2^4 + … + 2^9?
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The nth term is
an=a1(r)^(n-1)
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we want to find S_{10} (since we minus 1, the highest exponet is 9 so add 1 to make it correct)

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Which points are the verticles of the ellipse? Equations of ellipse
Mashutka [201]

Answer:

This question is solved in detail below. Please refer to the attachment for better understanding of an Ellipse.

Step-by-step explanation:

In this question, there is a spelling mistake. This is vertices not verticles.

So, I have attached a diagram of an ellipse in which it is clearly mentioned where are the vertices of an ellipse.

Vertices of an Ellipse: There are two axes in any ellipse, one is called major axis and other is called minor axis. Where, minor is the shorter axis and major axis is the longer one. The places or points where major axis and minor axis ends are called the vertices of an ellipse. Please refer to the attachment for further clarification.

Equations of an ellipse in its standard form:

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This is the case when major axis the longer one is on the x-axis centered at an origin.

\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} }  = 1

This is the case when major axis the longer one is on the y-axis centered at an origin.

where major axis length = 2a

and minor axis length = 2b

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