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
aliina [53]
3 years ago
7

What is the solution to the system of equations below?

Mathematics
1 answer:
mixer [17]3 years ago
5 0

\left\{\begin{array}{ccc}y=\frac{1}{2}x-4\\y=-2x-9\end{array}\right\Rightarrow\dfrac{1}{2}x-4=-2x-9\\\\\dfrac{1}{2}x-4=-2x-9\ \ \ |\cdot2\\\\x-8=-4x-18\ \ \ |+8\\\\x=-4x-10\ \ \ |+4x\\\\5x=-10\ \ \ |:5\\\\\boxed{x=-2}\\\text{substitute the value of x to the second equation}\\y=-2(-2)-9=4-9=-5\\\boxed{y=-5}\\\\\text{Answer:}\ x=-2;\ y=-5\to(-2;-5)

You might be interested in
A probability that is computed with the knowledge of additional information is
lianna [129]

Answer: called conditional probability

6 0
3 years ago
Read 2 more answers
Two wires are attached 6 feet up a tree and 3 feet from the base of the tree. About how much TOTAL wire was used?
nalin [4]

Answer:

9 cm²

Step-by-step explanation:

Two wires are attached 6 feet up a tree and 3 feet from the base of the tree. About how much TOTAL wire was used?

We solve the above question, using the Area of a Triangle

Area = 1/2 × Base × Height

Area = 1/2 × 3 × 6

Area = 9 cm²

Therefore, the total wore that was used was 9cm² of wire

3 0
3 years ago
Solve by factoring<br> p² + 16p +64 = 0<br> i like highkey don’t know how to do this
bonufazy [111]

Answer:

-8

Step-by-step explanation:

When you factor, you just find two numbers that add to be the first number (16) and multiply to be the second number (64). 8 and 8 both do this. So when we factor, we also add the variable into each equation because it also has been divided into two equations, and we get: (p + 8)(p +8). Notice that the equations are "+8" and not "-8" because two +8s add to give us a +16 and multiply to give us a +64. After that, we just solve the two equations to find the solutions. Subtract 8 from each equation (we do the opposite operation because 8 is positive) to get -8. Because the answer for each equation is the same our answer is -8.

7 0
3 years ago
Read 2 more answers
Can someone help me please?
Gwar [14]

Answer:

10.5 cm^2

Step-by-step explanation:

Area of a triangle = 1/2(L x H)

Reading from the diagram

length = 7 cm

height = 3 cm

therefore

Area of the triangle = 1/2( 7×3)

Area = 10.5 cm^2

4 0
3 years ago
Point M is located in the third quadrant of the coordinate plane, as shown.
Angelina_Jolie [31]
(-5.5,2) is the answer
4 0
3 years ago
Read 2 more answers
Other questions:
  • What are the approximate values of the minimum and maximum points of f(x) = x5 − 10x3 + 9x on [-3,3]? A. maximum point: (–2.4, 3
    6·2 answers
  • Is stealing work from branly plagiarizing
    8·2 answers
  • Dilation of 4 n (0,0) k(1, 1) I (1, 0)
    14·1 answer
  • The following is the graph of the quadratic parent function. T/F?
    12·1 answer
  • Given f(x)=-8x+1 find f(5)
    9·1 answer
  • What’s the slope-intercept form of y + 3 = 4(x - 5),
    12·2 answers
  • Someone help with this ?
    6·1 answer
  • The sides of a rectangle are scaled to be 1/4 of their original size What describes the effect of the scaling on the surface are
    6·1 answer
  • PLS HELP ME!!!!!!!!!!! Satish's register shows a deposit on February 4 in the amount of $150.00, an atm withdrawal on February 5
    5·2 answers
  • Simplify (2-7i)+(3+9i) step by step
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!