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3 years ago

(NEED HELP ASAP) What is the value of S4 for

Mathematics

2 answers:

Iteru [2.4K]3 years ago

4 0

Answer:

Step-by-step explanation:

Alexandra [31]3 years ago

3 0

Answer:

Step-by-step explanation:)

To obtain $S_{4}$ , sum the first 4 terms, using n = 1 to n = 4

$S_{4}$

= 6 $(2)^{0}$ + 6 $(2)^{1}$ + 6(2)² + 6(3)³

= (6 × 1) + (6 × 2) + (6 × 4) + (6 × 8)

= 6 + 12 + 24 + 48

= 90

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GarryVolchara [31]

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Step-by-step explanation:

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3 years ago

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Katarina [22]

Explanation

Part A

We can use the formula below to find the mean.

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We will then have;

$\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}$

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Part B

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1 year ago

12x-5y=20 y=x+4<br> 3x+y=3 x=-y+3

Vladimir79 [104]

Standard form (which I assume is what they want you to turn these into) is y=mx+b.

12x-5y=20 is y=2.4x-4.
Subtract 12x from both sides, -5y=-12x+20.
Multiply both sides by -1, 5y=12x-20.
Divide both sides by 5, y=2.4x-4.

y=x+4 is already in standard form- I'm not quite sure what to do.

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Subtract 3x from both sides, y=-3x+3.

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3 years ago

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Step-by-step explanation:

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