Ask question

Ask question

All categories

sleet_krkn [62]

3 years ago

5

Please help me out with number 7

1 answer:

Slav-nsk [51]3 years ago

4 0

The answer for number 7 is x=3

You might be interested in

Customers at the gym pay a membership fee to join and then a fee for each class they attend. Here is a graph that represents the

ArbitrLikvidat [17]

The y-intercept represents the starting fee

5 0

4 years ago

5 1/5 divided by -13/15

zepelin [54]

Look up this site called calculator soup it gives great answers

5 0

3 years ago

Read 2 more answers

Find a quadratic equation with roots -1, 4i and -1 - 4i

vazorg [7]

$\bf \textit{difference of squares}
\\\\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)
\\\\\\
\textit{also recall that }i^2=-1\\\\
-------------------------------\\\\
\begin{cases}
x=-1+4i\implies &x+1-4i=0\\
x=-1-4i\implies &x+1+4i=0
\end{cases}
\\\\\\
(x+1-4i)(x+1+4i)=\stackrel{y}{0}
\\\\\\\
[(x+1)~~-~~(4i)][(x+1)~~+~~(4i)]=y
\\\\\\\
[(x+1)^2~~-~~(4i)^2]=0\implies (x^2+2x+1)~-~(4^2i^2)=y
\\\\\\
(x^2+2x+1)~-~(16\cdot -1)=y\implies (x^2+2x+1)~-~(-16)=y
\\\\\\
x^2+2x+1~~+16=y\implies x^2+2x+17=y$

3 0

3 years ago

Please help, no links or i will report

ch4aika [34]

Answer:

i believe 1/5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Keiko sold 3 less than three-fourths of his sister’s sales. Which expression represents what Keiko sold?

Valentin [98]

Let’s represent his sister’s sales as x

3/4ths of his sister’s sales would be:

3/4x

3 less than 3/4ths of his sister’s sales would be:

3/4x - 3

3 0

3 years ago