How do I solve 5(4x -5) = 155

1 answer:

5 0

5*(4*x-5)-(155)=0
 5 • (4x - 5) - 155 = 0
 Pull out like factors :
20x - 180 = 20 • (x - 9)
 20 • (x - 9) = 0 Solve : 20 = 0
Solve : x-9 = 0
 Add 9 to both sides of the equation :
 x = 9
hope that helps!!

You might be interested in

Given that tan 0=-4/7 , and 270 degrees <0<360 degrees , what is the exact value of sec0?

Elanso [62]

I take it you meant θ angle, anyway.

we know the tan(θ) = -4/7... alrite, we also know that 270° < θ < 360°, which is another to say that θ is in the IV quadrant, where the adjacent side or "x" value is positive whilst the opposite side or "y" value is negative.

$\bf tan(\theta )=\cfrac{\stackrel{opposite}{-4}}{\stackrel{adjacent}{7}}\impliedby \textit{now let's find the \underline{hypotenuse}}
\\\\\\
\textit{using the pythagorean theorem}
\\\\
c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}
\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
\end{cases}
\\\\\\
c=\sqrt{7^2+(-4)^2}\implies \implies c=\sqrt{65}\\\\
-------------------------------\\\\
sec(\theta )=\cfrac{\stackrel{hypotenuse}{\sqrt{65}}}{\stackrel{adjacent}{7}}$

6 0

3 years ago

Which angle is in standard position?

Anni [7]

Answer:

An angle is in standard position, if its vertex is located at the origin and one ray is on the positive x-axis.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Write as an algebraic expression. "The difference between a number and -13

melisa1 [442]