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navik [9.2K]
3 years ago
10

Find the sum of the first 5 terms of the infinite series: 8 + 18 + 28 +

Mathematics
2 answers:
PtichkaEL [24]3 years ago
4 0

Answer:

Step-by-step explanation:

140

Anna007 [38]3 years ago
3 0

Answer:

8 + 18+ 28+ 38+ 48= 140

Step-by-step explanation:

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If you open an account that compounds quarterly in 2020. In what year will it double the starting amount if it has an APR of 3.2
Lerok [7]

Answer:

It will double in the year 2063

Step-by-step explanation:

Let the amount deposited be $x, when it doubles, the amount becomes $2x

we can use the compound interest formula to know when this will happen

The compound interest formula is as follows;

A = P(1+r/n)^nt

In this question,

A is the amount which is 2 times the principal and this is $2x

P is called the principal and it is the amount deposited which is $x

r is the interest rate which is 3.2% = 3.2/100 = 0.032

n is the number of times compounding takes place per year which is quarterly which equals to 4

t is the number of years which we want to calculate.

Substituting all these into the equation, we have;

2x = x(1+0.032/4)^4t

divide through by x

2 = (1+ 0.008)^4t

2 = (1.008)^4t

we use logarithm here

Take log of both sides

log 2 = log (1.008)^2t

log 2 = 2t log 1.008

2t = log 2/log 1.008

2t = 86.98

t = 86.98/2

t =43.49 which is 43 years approximately

Thus the year the money will double will be 2020 + 43 years = 2063

8 0
3 years ago
Which function described below has the greatest rate of change? I WILL MARK BRAINLIEST​
Ymorist [56]

Answer:

C III

Step-by-step explanation:

The rate of change of a linear function is the slope.

f(x) = mx + b is the equation of a linear function whose graph is a straight line. m is the slope.

I f(x) = 4x - 3;   m = slope = 4

II f(x) = 1/2 x + 5;   m = slope = 1/2

III We can use two points to find the slope.

Let's use points (1, 6) and (2, 12).

m = slope = (y2 - y1)/(x2  x1) = (12 - 6)/(2 - 1) = 6/1 = 6

The three slopes are 4, 1/2, 6.

The greatest rate of change is 6, so the answer is C III.

8 0
3 years ago
PLEASE HELP ME WITH THIS​
yawa3891 [41]

Answer:

parallel

Step-by-step explanation:

1.y=-0.5x+1

2.y=-0.5x+1

7 0
3 years ago
Mrs. Randall bakes a peach pie. The diameter of the pie is 9 inches. If Mrs. Randall cuts the pie into 6 pieces, what will be th
jarptica [38.1K]

Step-by-step explanation:

10.6 cm^2 .............,

8 0
3 years ago
Dr. Wong has a table of data in her veterinarian office that shows the average lifespans and weights of several popular dog bree
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Answer:

Step-by-step explanation:

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2 years ago
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