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
pochemuha
3 years ago
5

A.(7,8) B.(2,22) C.(2,8) D.(3,29)

Mathematics
1 answer:
Law Incorporation [45]3 years ago
7 0
Hey there!

To use the substitution method in order to solve the system of equations,
y=7x+8
y=x+20 , first notice that both equations are set equal to the same value, y.

Knowing this, 7x+8 and x+20 both equal the same value so you would set them equal to one another:
7x+8=x+20.

This would be substitution as you are substituting one of the equations in place of y.

Now, solve for x:
7x+8=x+20
6x+8=20
6x=12
x=2

Now that you know x equals the value of 2, you can substitute the value into one of the equations to find y:
y=x+20
y=2+20
y=22

Now that you have x=2 and y=22, you can conclude that your answer would be (2,22) or choice B.

Hope this helps and have a wonderful day! :)
You might be interested in
Identify the domain and range of each of the graphs below.<br><br><br> Domain: <br><br><br> Range:
Anna11 [10]

Answer:

Domain → (-∞, ∞)

Range → (-∞, ∞)

Step-by-step explanation:

Domain of a function is defined by the x-values or input values of the graph.

Similarly, Range of the function is defined by the y-values or output values from the graph.

From the picture attached,

x - values for the line shown in the graph vary from negative infinity to positive infinity.

Therefore, Domain of the function will be → (-∞, ∞)

And for every x-value there is a y-value, so Range of the function will be same as domain (varying from negative infinity to positive infinity) → (-∞, ∞)

8 0
3 years ago
Each leg of a 45°-45°-90° triangle measures<br> 14 cm. What is the length of the hypotenuse?
4vir4ik [10]

For a 45-45-90 angle the hypotenuse is s * square root of 2

so the hypotenuse is 14 * square root of 2 or 19.8

:)))

6 0
3 years ago
Read 2 more answers
-3x + 7x-8 = 34 + 9x - 2
zvonat [6]

Answer:

-8

Step-by-step explanation:

First combine like terms:

4x-8=32+9x

-40=5x

-8=x

8 0
3 years ago
Read 2 more answers
In the figure below, which angle pair is a pair of corresponding angles?
Hoochie [10]
The answer is D. Angle 4 and angle 8 are corresponding...
6 0
3 years ago
Read 2 more answers
What is the surface area of an orange with a 3inch radius
svp [43]

Orange = sphere

S.A of sphere

= 4πr²

= 4 × π × r × r

= 4 \times \pi\times 3 \times 3

= 36\pi

3 0
3 years ago
Read 2 more answers
Other questions:
  • Garret makes a ramp for his skateboard in the shape of a right triangle with a hypotenuse of 2 ft, and a leg of 1 ft. He wants t
    14·1 answer
  • If f(2) = 22 – 5, then what is the value of f(2) + f(5)?
    15·2 answers
  • Two-thirds Times a number plus 7 equals 7 minutes the number. Find the number
    13·1 answer
  • What is the depth and volume of this rectangular prism in cubes and cubic inches?
    13·1 answer
  • A car that is traveling from one city to another has a velocity that is increasing at a constant slope of 3. If the car started
    15·2 answers
  • Two lines, R and M, are represented by the following equations:
    8·1 answer
  • This as well, pleasee!!!
    7·2 answers
  • Has endpoints J(13, 8) and K(–6, –6). Find the coordinates of the midpoint of .
    12·1 answer
  • Find the height x of the triangle? 90 100
    14·1 answer
  • A pool holds 1620 gallons.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!