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3 years ago

Find the sum of the geometric series if n = 6, r= 1/4, a = 2.

Mathematics

1 answer:

NeTakaya3 years ago

3 0

Sn = a(1-r^n)/(1-r)

Sn= 8(1-1/4096)/3= 2.67

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what is the molariry of a solution that contains 1.22 mol of hydrogen chloride if the total volume of the solution is 1,251 mL?

hichkok12 [17]

Your molarity would be 0.975 M HCl because it’s moles of solute divided by liters of solvent

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3 years ago

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Combine the like terms to create an equivalent expression -k - ( - 8k)

Svetllana [295]

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Answer:

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Step-by-step explanation:

We are trying to combine like terms with the expression: -k - ( - 8k)

We are pretty much solving it.

Solve:

-k - ( - 8k)

The "- ( -" turns into a plus sign.

So it would look like:

-k - -8k or -k + 8k

Now, you would finish solving

-k + 8k = 7k

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3 years ago

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If the midpoint is located at (-6,-2) and one endpoint is at (1,7), what is the coordinates of the other endpoint?

FromTheMoon [43]

Answer:

The other endpoint would be (-13, -11)

Step-by-step explanation:

In order to find the coordinates of an end point, we need to note that the midpoint would be the average of the two values. We'll call the unknown point P and we'll start by looking at the x values only.

(1 + Px)/2 = -6 ----> multiply by 2

1 + Px = -12 -----> subtract 1

Px = -13

Now we can do the same with the y values.

(7 + Py)/2 = -2 ----> multiply by 2

7 + Py = -4 ------> subtract 7

Py = -11

4 0

4 years ago

What is the surface of the prism?

jasenka [17]

Given :-

Length :- 8m
Width :- 10
Height :- 10m

To find :-

Surface area

Solution :-

formula for Surface Area = 2(LW + WH + HL)

putting the known values,

Surface Area = 2(8×10 + 10×10 + 10×8) m²

Surface Area = 2(260) m²

Surface Area = 520m² ( Option C)

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2 years ago

What is the mean absolute deviation of the data set? {12, 4, 30, 16, 18} 2. 8 5 2006. 4 16.

Harrizon [31]

Answer:

12 3 30 16 18 2 8 6 2006 4 16 12 4 12 13

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2 years ago