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
blsea [12.9K]
3 years ago
15

Solve each system of equations by adding, subtracting, or multiplying.

Mathematics
1 answer:
professor190 [17]3 years ago
3 0
Solve each system of equations by adding, subtracting, or multiplying.

1) 3x - 3y = -9
2x + y = -3

You might be interested in
Need some help with the answer to the question
kicyunya [14]

Answer:

(- 4, 27 )

Step-by-step explanation:

Equate the right sides of both equations, that is

x² - 2x + 3 = - 2x + 19 ← subtract - 2x + 19 from both sides

x² - 16 = 0 ← in standard form

(x - 4)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x + 4 = 0 ⇒ x = - 4

Substitute these values into f(x) = - 2x + 19

f(4) = - 2(4) + 19 = - 8 + 19 = 11 ⇒ (4, 11 )

f(- 4) = - 2(- 4) + 19 = 8 + 19 = 27 ⇒ (- 4, 27 )

8 0
3 years ago
Help needed now with Math question.
saveliy_v [14]

Answer:

is the last one

Step-by-step explanation:

5 0
3 years ago
Help a girl out with this problem
Masja [62]
The last choice because anything greater than a negative number eventually leads to the posetive numbers, plus substituting any posetive number aolves the inequality.
8 0
3 years ago
Trigonometry that’s due in one hour :(
expeople1 [14]

Answer:

(a)  \theta=\tan^{-1}(-0.890)

\implies \theta=-41.66908262 \pm 180 \textdegree n

\implies \theta=138.3309174..., 318.3309174...

\implies \theta=138\textdegree, 318\textdegree

(b)  \theta=\cos^{-1}\left(\dfrac{\sqrt{3} }{2}\right)

\implies \theta=30 \textdegree \pm360 \textdegree n, 330 \textdegree \pm360 \textdegree n

\implies \theta=30 \textdegree , 330 \textdegree

(c)  \theta=\sin^{-1}\left(\dfrac{1 }{2}\right)

\implies \theta=30 \textdegree \pm360 \textdegree n, 150 \textdegree \pm360 \textdegree n

\implies \theta=30 \textdegree , 150 \textdegree

3 0
2 years ago
Which of the tables is a function?<br> PLEASE HELP<br> 15 POINTS <br> or Brainlist answer!!!
Drupady [299]

Answer:

I say C is your best answer because it might be a typo

3 0
3 years ago
Other questions:
  • Algebra help please
    6·1 answer
  • Mrs.Johnson has 36 markers and 48 color pencils.She wants to put them in containers that have both kinds of supplies,and she wan
    13·1 answer
  • The polygon below are similar. solve for x and y
    5·2 answers
  • How to simplify g(x) = -2(x-1)(x+5)
    5·1 answer
  • A ball is thrown vertically upward from ground level with an initial velocity of 80 feet per second. The ball's h height after t
    6·2 answers
  • Sara drives 72 miles on 3.2 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Usin
    9·1 answer
  • Write an algebraic expression for the situation. 7 less than the quotient of y divided by 4
    7·2 answers
  • Write a polynomial function of the least degree that has roots of 3 and (4 + i).
    14·1 answer
  • 0.6 of it is 30 <br><br>find the number
    7·2 answers
  • ANSWER FAST PLEASEEE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!