2 years ago

4 times a number is 5 less than the square of that number

2 answers:

4 0

Answer: The values were x = 5, and x = -1, with one positive root and one negative root. The negative solution of the two solutions is -1.

Alekssandra [29.7K]2 years ago

3 0

Answer:

4x=x²-5

Step-by-step explanation:

4 times a number=4x

square of that number=x²

is 5 less=-5

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Solve the inequality |x| < 5. {x|-5 < x < 5} {x|x < -5 ∪ x > 5} {x|x -5 ∪ x < 5}

sesenic [268]

ANSWER

The correct answer is A

{ $x|-5$ }

EXPLANATION

$|x|$

This implies that

$x$

We solve the compound inequality to obtain,

$x-5$

Remember that, dividing through by negative 1 reverses the inequality sign

The solution set is

{ $x|-5$ }

8 0

3 years ago

Suppose you invest $400 at an annual interest rate of 7.6% compounded continuously. How much will you have in the account after

likoan [24]

$\bf ~~~~~~ \textit{Compounding Continuosly Interest Earned Amount}\\\\
A=Pe^{rt}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$400\\
r=rate\to 7.6\%\to \frac{7.6}{100}\to &0.076\\
t=years\to &1.5
\end{cases}
\\\\\\
A=400e^{0.076\cdot 1.5}\implies A=400e^{0.114}$