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
Keith_Richards [23]
3 years ago
12

What is the solution to the system of equations?

Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:

  (x, y) = (-4, 15)

Step-by-step explanation:

The two equations have the same coefficient for y, so you can eliminate y by subtracting one equation from the other. Here the x coefficient is largest for the first equation, so it will work best to subtract the second equation.

  (3x +y) -(2x +y) = (3) -(7)

  x = -4 . . . . . . . . simplify

Now, we can find y by substituting this value for x.

  2(-4) +y = 7

  y = 7 +8 = 15 . . . . . add 8 to both sides of the equation

The solution is (x, y) = (-4, 15).

You might be interested in
Factor this polynomial completely.<br> x2 - 81
Naddik [55]
The first answer is right
(x - 9) (x + 9)
It’s me again lol
6 0
3 years ago
42/40 into a mixed number is??
SSSSS [86.1K]
Hello there!

So, as we see that 42 is more than the denominator, so, we would have to see by how much it would be over.

40-42=2.

So, sense we have an whole number which would be (1)

Your answer: \boxed{\boxed{\bf 1\frac{2}{40} }}
6 0
3 years ago
Zoe and Hannah share tips in the ratio 3:7. Last week, Zoe received £24. How much did Hannah receive last week?
Goshia [24]

Answer:

hannah gets £56

Step-by-step explanation:

z   : h

3   : 7

24 : ?

24/3 = 8

8 x 7 = 56

£56

hope this helps

brainliest plz?

x

8 0
3 years ago
The line with equation a + 4b = 0 coincides with the terminal side of an angle θ in standard position and cos θ&gt;0 . What is t
Nikitich [7]

Answer:

\frac{-1}{\sqrt{17} }

Step-by-step explanation

We have given that equation of line a+4b=0

⇒4b= -a

⇒b= \frac{-a}{4}

slope of line = tan\theta =\frac{P}{B}= \frac{-1}{4}

⇒ tan\theta is negative therefore it lies into 4th quadrant

By, Pythagoras theorem H^2=P^2+B^2

by putting value of P= -1 & B=4

the value of H=\sqrt{17}

with the given condition cos\theta>0

i.e. \theta∈ (3π/2, 2π)

now, sin\theta= \frac{P}{H}= \frac{-1}{\sqrt{17}}



6 0
2 years ago
I NEED HELP!!!!!!!!!!!!
mart [117]

Answer:

n=7

Step-by-step explanation:

I feel like you need the answer now so i'm not gonna write one.

4 0
3 years ago
Other questions:
  • What is the slope of the line whose equation is −48=2x−8y?<br> It has to be made into a fractionnnnn
    9·1 answer
  • Rewrite the expression with positive exponents (problem #4)
    7·1 answer
  • What is (--5 to the fifth power )to the second power
    6·1 answer
  • If f(x) = 2x and g(x)=1/x, what is the domain of (fg)(x)
    8·1 answer
  • For a finite sequence of nonzero numbers, the number of variations in sign is defined as the number of pairs of consecutive term
    5·1 answer
  • Can someone help me with my homework
    14·1 answer
  • Which one is correct
    6·2 answers
  • Find an ordered pair (x, y) that is a solution to the equation. -x+4y= 5​
    9·1 answer
  • Paper lanterns are $3.50 each. Write
    14·1 answer
  • What is the quotient? for 692 divided by 16
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!