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
pishuonlain [190]
3 years ago
7

Find the solution of the system of equations. -x+3y=9 -x-y=-3

Mathematics
1 answer:
Inessa [10]3 years ago
4 0

Step-by-step explanation:

use the steps of simultaneous

elimination steps

You might be interested in
I need help on my homework... plz
Kazeer [188]

Nevermind i see it. one sec

7 0
3 years ago
Someone please help me with this lol… have no idea what I’m doing
Sholpan [36]

Given:

\cos \theta =\dfrac{3}{5}

\sin \theta

To find:

The quadrant of the terminal side of \theta and find the value of \sin\theta.

Solution:

We know that,

In Quadrant I, all trigonometric ratios are positive.

In Quadrant II: Only sin and cosec are positive.

In Quadrant III: Only tan and cot are positive.

In Quadrant IV: Only cos and sec are positive.

It is given that,

\cos \theta =\dfrac{3}{5}

\sin \theta

Here cos is positive and sine is negative. So, \theta must be lies in Quadrant IV.

We know that,

\sin^2\theta +\cos^2\theta =1

\sin^2\theta=1-\cos^2\theta

\sin \theta=\pm \sqrt{1-\cos^2\theta}

It is only negative because \theta lies in Quadrant IV. So,

\sin \theta=-\sqrt{1-\cos^2\theta}

After substituting \cos \theta =\dfrac{3}{5}, we get

\sin \theta=-\sqrt{1-(\dfrac{3}{5})^2}

\sin \theta=-\sqrt{1-\dfrac{9}{25}}

\sin \theta=-\sqrt{\dfrac{25-9}{25}}

\sin \theta=-\sqrt{\dfrac{16}{25}}

\sin \theta=-\dfrac{4}{5}

Therefore, the correct option is B.

6 0
2 years ago
You type 4500 words per hour. How many words do you type<br> per minute?
sattari [20]

Answer:

<u>you type </u><u>75</u><u> words per minute.</u>

Step-by-step explanation:

since there are 60 minutes in an hour, simply divide 4,500 by 60 to get 75. i hope this helps you! good luck and have a great day. :)

7 0
3 years ago
Read 2 more answers
Stan scored 548,751 points on a computer game.   What was his score rounded to the nearest thousand?
ivolga24 [154]
549,000. Your welcome.
8 0
3 years ago
The perimeter of a college athletic field is 104 meters and the length is 16m more than the width find the length and width
Karolina [17]
Attached a solution and showed work.

8 0
3 years ago
Other questions:
  • What is 22,119 rounded to the nearest hundred?
    6·1 answer
  • Graph ​ y−5=−23(x+9) ​ using the point and slope given in the equation.
    7·1 answer
  • -3(2x-3)=6x+9 how do I do this ​
    11·2 answers
  • Can y’all tell me the answer of these 4 questions
    15·2 answers
  • Marcus is observing bacteria multiply.every 15 seconds,there are 10 times more bacteria than before.if there are 10 bacteria now
    11·1 answer
  • Example and answer,will give brain
    13·1 answer
  • More of my brothers wwork for yalll have fun and tysm!
    6·2 answers
  • Convert to a mixed number and simplify 83/6 pls help pls give a explanation so i can understand pls thank you.
    11·1 answer
  • 38. Which equation represents the data in<br> the table?
    6·2 answers
  • 1/2 of the people in the clinic are men, 1/3 are elderly, how many people are not elderly or men?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!