3 years ago

I need help with this question

Mathematics

1 answer:

Sophie [7]3 years ago

5 0

Answer:

Step-by-step explanation:

they want you to find the other coordinate with a y value of 3.

You can see the only ones with a y value of 3 is (-7,3) and (5,3)

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Write the series using summation notation. Then find the sum of the series.

ivolga24 [154]

Hello, please consider the following.

$\displaystyle 1+2+3+...+12=\sum_{k=1}^{k=12} {k}=\dfrac{12*13}{2}=6*13=78$

For the second we will need to put on the same denominator.

$\displaystyle \dfrac{1}{2}+\dfrac{1}{4}+...+\dfrac{1}{14}=\sum_{k=1}^{k=7} {\dfrac{1}{2k}}\\\\=\dfrac{1}{2}\dfrac{420+210+140+105+84+70+60}{5*7*3*2*2}\\\\=\dfrac{1}{2}\dfrac{1089}{420}\\\\=\dfrac{1089}{840}=1.296429...$

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3 years ago

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Leno4ka [110]

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Step-by-step explanation:

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V125BC [204]

Answer:

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Step-by-step explanation:

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3 years ago

Hi. I also need help with this question as well.

Lady bird [3.3K]

Answer:

Step-by-step explanation:

The diagram shows four points through which the line of proportional relationship should pass. One of these points has coordinates (8,28).

The line representing proportional relationship is always straight line passing through the origin and has the equation

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3 years ago

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Fed [463]

Answer:

the answer is B

Step-by-step explanation:

subtract 33 from 90

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