1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Usimov [2.4K]
3 years ago
7

Given the equation square root of quantity 3x plus 6 end quantity equals 3, solve for x and identify if it is an extraneous solu

tion.
Mathematics
1 answer:
MissTica3 years ago
4 0

Step-by-step explanation:

3x+6=3

-6 -6

3x =-3

÷3 ÷3

x= -1

You might be interested in
HURRY HELP NOW!! Solve for x please !!!!
bogdanovich [222]

Answer:

X=9 so D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the angle between u = i+sqr of 7j and v = -i+9j. Round to the nearest tenth of a degree.
Zolol [24]

\bf ~~~~~~~~~~~~\textit{angle between two vectors } \\\\ cos(\theta)=\cfrac{\stackrel{\textit{dot product}}{u \cdot v}}{\stackrel{\textit{magnitude product}}{||u||~||v||}} \implies \measuredangle \theta = cos^{-1}\left(\cfrac{u \cdot v}{||u||~||v||}\right) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} u=i+\sqrt{7}j\implies &\\\\ v=-i+9j\implies & \end{cases} \\\\[-0.35em] ~\dotfill

\bf u\cdot v\implies (1)(-1)~+~(\sqrt{7})(9)\implies -1+9\sqrt{7}\implies 9\sqrt{7}-1~\hfill dot~product \\\\[-0.35em] ~\dotfill\\\\ ||u||\implies \sqrt{1^2+(\sqrt{7})^2}\implies \sqrt{1+7}\implies \sqrt{8}~\hfill magnitudes \\\\\\ ||v||\implies \sqrt{(-1)^2+9^2}\implies \sqrt{1+81}\implies \sqrt{82} \\\\[-0.35em] ~\dotfill

\bf \theta =cos^{-1}\left( \cfrac{9\sqrt{7}-1}{\sqrt{8}\cdot \sqrt{82}} \right)\implies \theta =cos^{-1}\left( \cfrac{9\sqrt{7}-1}{\sqrt{656}} \right) \\\\\\ \theta \approx cos^{-1}(0.8906496638868531)\implies \theta \approx 27.05

make sure your calculator is in Degree mode.

6 0
3 years ago
Which one is correct?
jeka94

Answer:

The first one (A) is the answer I got!

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A tank contains seven liters of 10% alcohol solution. how many liters of 6% alcohol should be added to have 8% alcohol solution?
kow [346]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
SHOW ALL WORK <br><br>PLEASE HELP ME!!!!!
LekaFEV [45]
Hello,
Please, see the attached files.
Thanks.

7 0
3 years ago
Other questions:
  • The diameter of a circle is 7 cm. Find its circumference in terms of pie
    6·1 answer
  • serena is the manager at a coffee shop the amount of money she earns is represented by m=21h. how much more per hr does she earn
    10·1 answer
  • The total mass of these litems is 3.25lb one item is 2 lb. write a possible mass for each other item
    7·1 answer
  • A rectangle has a perimeter of 44 inches and an area of 72 square inches. what are the lengths of the sides of the rectangle
    8·1 answer
  • Two students raced their model cars down a track. The first car traveled
    7·1 answer
  • Jus bc im feelin nice lol<br> rate me<br> oh and 2(9y+6-9)
    11·1 answer
  • What is the slope of the line below? If necessary, enter your answer as a
    9·1 answer
  • A resort hotel has 260 guests. On one​ day, 6 groups of 13 guests leave to shop and 2 groups of 6 guests go sightseeing. Evaluat
    5·1 answer
  • Choose all the numbers that are common multiples of 4 and 9.​
    5·1 answer
  • Give three examples of equations that have the solution -6.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!