3 years ago

Express the series using sigma notation. 6 + 9 + 12 + 15.

Mathematics

1 answer:

Mama L [17]3 years ago

4 0

Σ 40

n=6

explanation; add all the numbers to get 40

6 is the first number and 15 is the last number

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a keycode must contain 2 letters and 3 numbers. the letters may be any letter of the alphabet. the numbers should be any number

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3 years ago

Y = – 3

KonstantinChe [14]

The best approximation for the solution to this system of equations is (-2.2,-3)

Option C is correct.

Step-by-step explanation:

Solving the system of equations to get the exact value of x:

$y = -3\\y = x-0.8$

Let

$y = -3\,\,eq(1)\\y = x-0.8\,\,eq(2)$

Putting value of y from eq(1) into eq(2)

$-3=x-0.8$

$x=-3+0.8$

$x=-2.2$

So, Value of x is -2.2

The best approximation for the solution to this system of equations is:

x=-2.2 and y = -3

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Option C is correct.

Keywords: System of equations

Learn more about system of equations at:

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3 years ago

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mezya [45]

Answer:

The price of the tv before tax is 410

Step-by-step explanation:

Let x = price of tv before tax

tax = x* 9%

tax = .09x

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KengaRu [80]

Hello,
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3 years ago

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