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xz_007 [3.2K]
3 years ago
6

What is the answer to this problem, step by step 7 – (5t – 13) = –25

Mathematics
2 answers:
kakasveta [241]3 years ago
3 0
7
−
(
5
t
−
13
)
=
−
25
(Expand
−
(
5
t
−
13
)
)
7
−
5
t
+
13
=
−
25
(Simplify the equation)
20
−
5
t
=
−
25
(Minus
20
on both sides)
−
5
t
=
−
45
(Divide by
−
5
on both sides)
Answer-
t
=
9
Lubov Fominskaja [6]3 years ago
3 0
The answer is t = 9 because you start with distributing the parentheses then you add 7 and 14 then you bring the sum of that over to the other side but with the opposite sign then you divide whatever numbers in front of the variable and then that’s your answer
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8 0
3 years ago
After 5 years, Rachel’s amount in her savings account is $7446.52. Her account earned interest at 4.32% APR and was compounded d
Katyanochek1 [597]
\bf \qquad \textit{Continuously Compounding Earned Amount}\\\\
A=Pe^{rt}\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &7446.52\\
P=\textit{original amount deposited}\\
r=rate\to 4.32\%\to \frac{4.32}{100}\to &0.0432\\
t=years\to &5
\end{cases}
\\\\\\
7446.52=Pe^{0.0432\cdot 5}\implies \cfrac{7446.52}{e^{0.0432\cdot 5}}=P\implies 5999.92404\approx P
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