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vladimir2022 [97]
2 years ago
13

Nina made two investments: Investment \text{A}A has a value of \$50$50 at the end of the first year and increases by 8\%8% per y

ear. Investment \text{B}B has a value of \$60$60 at the end of the first year and increases by \$3$3 per year. Nina checks the value of her investments once a year, at the end of the year. What is the first year in which Nina sees that investment \text{A}A's value exceeded investment text{B}B's value?

Mathematics
3 answers:
nirvana33 [79]2 years ago
8 0

Answer:

  year 7

Step-by-step explanation:

If we assume that investment A earns interest compounded annually, its value can be modeled by the equation ...

  A = 50·(1+0.08)^(t-1) . . . . . where t is the year number

The second investment earns $3 per year, so its value can be modeled by the equation ...

  B = 60 + 3(t -1) . . . . . . . . . where t is the year number

We are interested in finding the minimum value of t such that ...

  A > B

  50·1.08^(t-1) > 60 +3(t-1)

This is a mix of exponential and polynomial terms for which no solution method is available using the tools of Algebra. A graphing calculator shows the solution to be ...

  t > 6.552

The value at the end of year 1 is found for t=1, so the values of interest are seen after 6.55 years, in year 7.

Natali5045456 [20]2 years ago
3 0

Answer:

7

Step-by-step explanation:

khan academy

;)

Guest1 year ago
0 0

7. because i took the test

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tester [92]

Answer:  a) 278382 oz

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Step-by-step explanation:

a) 8 T. 1,398 lb. 14 oz. × 6

First we need to change it in 'oz'.

As we know that

1\ ton=32000\ oz\\\\1\ lb=16\ oz

so, it becomes,

8\times 32000+1398\times 16+14\ oz\\\\=278382\ oz

8 T. 1,398 lb. 14 oz. × 6 becomes

278382\times 6\\\\=1670292\ oz

b) 349 lb. 6 oz. ÷ 130

It becomes,

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First it becomes,

6\times 32000+294\times 16\ oz\\\\=196704\ oz

At last it becomes,

\frac{196704}{3071}\\\\=64.1\ oz

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b) 43 oz

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6 0
2 years ago
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Which of the following groups has terms that can be used interchangeably with the others?1. Percentage, Probability, and Proport
Dafna1 [17]

Answer: 1) Percentage, Probability, Proportion

Step-by-step explanation:

In statistics,

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▪Percentage means a number or a ratio, expressed as a fraction of 100. Here, the total is 100.

▪Probability which may look slightly different from the other two means a number between 0 and 1, showing the exact likelihood of an event happening. Which in context can mean, a number showing a fraction of an event happening out of the whole (0 to 1).

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Step-by-step explanation:

Given

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Zoe can graze in an area equal to quadrant of circle with radius 10 m

Area of grazing is

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. A frequency distribution helps determine ________. A) the extent of nonresponse B) the extent of illegitimate responses C) the
kow [346]

Answer:

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Step-by-step explanation:

A frequency distribution helps determine <u>the extent of non-response and also the extent of illegitimate responses </u>

<h3>For :</h3>
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bogdanovich [222]
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