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lora16 [44]
3 years ago
15

Find the sum of the arithmetic series given a1

Mathematics
2 answers:
Kay [80]3 years ago
5 0
It’s B trust me I know
stich3 [128]3 years ago
4 0

Answer:

D

Step-by-step explanation:

The sum to n terms of an arithmetic series is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = 12, d = 4 and n = 30 , then

S_{30} = \frac{30}{2} [ (2 × 12) + (29 × 4) ]

     = 15(24 + 116)

     = 15 × 140

     = 2100 → D

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I’ll mark you brainlist! pls help
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Combine like terms

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Solve 14x-7y= 21 for y<br> A. y = 2x - 21<br> B. y=-14x + 21<br> C. y = 14x +3<br> D. y=2x-3
jonny [76]

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3 0
1 year ago
Please what is the answer 2/7x=2/3
iVinArrow [24]

Answer: 7/3

Step-by-step explanation:

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3 years ago
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Help on the second graph
Deffense [45]

Answer:

<u>first graph:</u>

function.

Not one-one

onto

<u>Second graph:</u>

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one-one

not onto.

Step-by-step explanation:

We know that a graph is a function if any vertical line parallel to the y-axis should intersect the curve exactly once.

A graph is one-one if any horizontal line parallel to the x-axis or domain should intersect the curve atmost once.

and it is onto if any horizontal line parallel to the domain should intersect the curve atleast once.

Hence, from the <u>first graph:</u>

if we draw a vertical line parallel to the y-axis then it will intersect the graph exactly once. Hence, the graph is a function.

But it is not one-one since any horizontal line parallel to the domain will intersect the curve more than once.

But it is onto, since any horizontal line parallel to the domain will intersect the curve atleast once.

<u>Second graph</u>

It is a function since any vertical line parallel to the co-domain will intersect the curve exactly once.

It is not one-one since any horizontal line parallel to the x-axis does not intersect the graph atmost once.

It is not onto, since any horizontal line parallel to the domain will not  intersect the curve atleast once.

7 0
4 years ago
I-Ready
irakobra [83]

Figure JKLM is translated 2 units down to form figure PQRS

<h3>Transformation</h3>

Transformation is the movement of a point from its initial point to a new location. Types of transformation are <em>rotation, reflection, translation and dilation</em>.

If a point A(x, y) is translated a units down, the new point is at A'(x, y - a)

Figure JKLM is translated 2 units down to form figure PQRS

Find out more on translation at: brainly.com/question/12861087

5 0
2 years ago
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