What is the answer for 3x-5x=3+4

Mathematics

2 answers:

Black_prince [1.1K]2 years ago

6 0

3x - 5x = 3 + 4
Combine like terms

2x = 7
Divide both sides by 2

x = 7/2

densk [106]2 years ago

5 0

Step 1. simplify
-2x = 7
step 2. divide both side by -2
-2x = 7
÷2 ÷2
x = -3.5
The answer for 3x - 5x = 3 + 4 is x = -3.5

You might be interested in

72 is 45% of what number? Please give me a explanation with the answer asap

Juliette [100K]

Answer:

160

Step-by-step explanation:

72/45 = 1.6

1.6 * 45 = 72

Background information

160/100 = 1.6 (100 for percents)

160 fits the answer so it is right

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

5 0

2 years ago

Evaluate the cosine if the angle of rotation which contains the point (9, -3) on its terminal side

Liono4ka [1.6K]

so we know the terminal point is at (9, -3), now, let's notice that's the IV Quadrant

$\bf (\stackrel{x}{9}~~,~~\stackrel{y}{-3})\impliedby \textit{let's find the \underline{hypotenuse}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ c=\sqrt{9^2+(-3)^2}\implies c=\sqrt{81+9}\implies c=\sqrt{90} \\\\[-0.35em] ~\dotfill$

$\bf cos(\theta )=\cfrac{\stackrel{adjacent}{9}}{\stackrel{hypotenuse}{\sqrt{90}}}\implies \stackrel{\textit{rationalizing the denominator}}{\cfrac{9}{\sqrt{90}}\cdot \cfrac{\sqrt{90}}{\sqrt{90}}\implies \cfrac{9\sqrt{90}}{90}}\implies \cfrac{\sqrt{90}}{10}\implies \cfrac{3\sqrt{10}}{10}$