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icang [17]
2 years ago
9

Nancy had $2,848.52 in a savings account with simple interest. She had opened the account with $2,006 exactly 3 years earlier. W

hat was the interest rate?
Mathematics
1 answer:
Elanso [62]2 years ago
7 0

Answer:

  14%

Step-by-step explanation:

A = P(1 +rt) . . . . . . . . . . . . . . . . . . formula for the balance for simple interest

2848.52 = 2006(1 +3r) . . . . . . . filling in the given numbers

1.42 = 1 +3r . . . . . . . . . . . . . . . . . .divide by 2006

0.42 = 3r . . . . . . . . . . subtract 1

0.14 = r = 14%

Nancy's account paid interest at 14% per year.

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bezimeni [28]

Answer:

B. 6.2

Step-by-step explanation:

The calculation is done by hand and verified by a TI-84 calculator.

8 0
3 years ago
Read 2 more answers
Which formula can be used to describe the sequence below?
saul85 [17]

An=A1+(n-1)d

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5 0
3 years ago
Previous
worty [1.4K]

No change in area

Step-by-step explanation:

The area is 60 square feet for both rectangles.

4 0
2 years ago
Ln a+3 + ln a-3 = ln 16
Lilit [14]
\bf log_{{  a}}(xy)\implies log_{{  a}}(x)+log_{{  a}}(y)\\\\
and\qquad \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
ln(a+3)+ln(a-3)=ln(16)\implies ln[(a+3)(a-3)]=ln(16)
\\\\\\
ln[a^2-3^2]=ln(16)\impliedby \textit{removing ln() from both sides}
\\\\\\
a^2-9=16\implies a^2=16+9\implies a^2=25
\\\\\\
a=\pm\sqrt{25}\implies a=\pm 5
7 0
3 years ago
X+y= -9<br> x+2y= -25<br><br> According to the system of equations above, what is the value of y?
Varvara68 [4.7K]
Try this option:
if x+y=-9 is I (one)
and x+2y=-25 is II (two), then
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6 0
3 years ago
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