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Reil [10]
3 years ago
5

After 8 years, ofelia earned $980 in simple interest from a cd into which she initially deposited $7000. what was the annual int

erest rate of the cd?
Mathematics
2 answers:
kobusy [5.1K]3 years ago
8 0
We have: I = P × R × T / 100
Here, I = 980
P = 7000
T = 8

Substitute their values into the expression:
980 = 7000 × R × 8 / 100
R = 980 × 100 / 7000 × 8
R = 98000 / 56000
R = 1.75%

In short, Your Answer would be 1.75%

Hope this helps!
asambeis [7]3 years ago
8 0

Answer: 1.75 !!

Step-by-step explanation:

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Find the first term of the following geometric sequence ----,42,126,378,1,134
sergey [27]
Since it is a geometric sequence each term will be a specific multiple of the term preceding it, called the common ratio...

126/42=378/126=1134/378=3

The sequence is a(n)=a(3)^(n-1) and we know the second term is 42 so:

42=a(3)^(2-1)

42=3a

a=14

So the first term is 14.
8 0
3 years ago
The cost function in a computer manufacturing plant is C(x) = 0.28x^2-0.7x+1, where C(x) is the cost per hour in millions of dol
Licemer1 [7]

9514 1404 393

Answer:

  $562,500 per hour

Step-by-step explanation:

The cost will be a minimum where C'(x) = 0.

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  x = 0.7/0.56 = 1.25

The cost at that production point is ...

  C(1.25) = (0.28×1.25 -0.7)1.25 +1 = -0.35×1.25 +1 = 0.5625

The minimum production cost is $562,500 per hour for production of 1250 items per hour.

_____

<em>Additional comment</em>

This is different than the minimum cost <em>per item</em>. This level of production gives a per-item cost of $450. The minimum cost per item is $358.30 at a production level of 1890 per hour.

5 0
2 years ago
Write 894,217 in expended form an using number names
storchak [24]
Eight hundred ninety four thousand, two hundred and seventeen. I hope this helps.
5 0
3 years ago
I just need someone to answer these:
VladimirAG [237]

Answer:

7x4/8=3.5

9 × 7/10=6.3

(i dont know this one or the next, hope it helps! ❤

Step-by-step explanation:

7 0
3 years ago
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What is 1-1 please help
vladimir1956 [14]

Answer:

0

Step-by-step explanation:

1-1=0

It's common knowledge that 1-1=0 so I dont know how to explain it any further

4 0
3 years ago
Read 2 more answers
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