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
alexira [117]
4 years ago
5

Consider the following pair of equations:

Mathematics
1 answer:
Oksana_A [137]4 years ago
5 0
There is a special kind of substitution which some books call it by comparison.

When the two equations are both 
y=some function of x
y=some other function of x, then
we can substitute the second equation into the first giving
some function of x = some other function of x and start solving.

For example,
<span>y = –2x + 8 
y = x – 1
substitute second into first
x-1=-2x+8
isolate x on left,
3x=9
x=3
second step is to substitute x=3 into second equation to get
y=x-1=3-1=2
Therefore the solution is (3,2)</span>
You might be interested in
To subtract integers you…<br> Pls, tell me the steps to subtract integers IN YOUR OWN WORDS PLS.
Aleks04 [339]

Answer:

Steps on How to Subtract Integers!

1. Keep the first number!

2. Change the operation from subtraction to addition!

3. Get the opposite sign of the second number!

4. Proceed with the regular addition of integers!

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Elevando um certo numero natural,maior do que zero,ao expoente 101 encontrarmos como resposta 1. Qual é esss numero? 101 A) 0 B)
Feliz [49]

Answer:

B) 1

Step-by-step explanation:

The computation of the number is shown below:

Since the number 1 would be raised to any exponent so it always remains be 1

Like

= 1 × 1 × 1 × 1 × 1 × 1 × 1 × 1 × 1

= 1

Therefore the option B is correct

5 0
3 years ago
A box of cereal has a width of 4 inches, and a length of 8 inches and a height of 12 inches. What is the volume of the box, in c
DochEvi [55]

Answer:

384

Step-by-step explanation:

multiply all those numbers together

3 0
3 years ago
Read 2 more answers
For what real value of $v$ is $\frac{-21-\sqrt{301}}{10}$ a root of $5x^2+21x+v$?
Degger [83]

Answer:

v = 7

is the value for which

x = (-21 - √301)/10

is a solution to the quadratic equation

5x² + 21x + v = 0

Step-by-step explanation:

Given that

x = (-21 - √301)/10 .....................(1)

is a root of the quadratic equation

5x² + 21x + v = 0 ........................(2)

We want to find the value of v foe which the equation is true.

Consider the quadratic formula

x = [-b ± √(b² - 4av)]/2a ..................(3)

Comparing (3) with (2), notice that

b = 21

2a = 10

=> a = 10/2 = 5

and

b² - 4av = 301

=> 21² - 4(5)v = 301

-20v = 301 - 441

-20v = -140

v = -140/(-20)

v = 7

That is a = 5, b = 21, and v = 7

The equation is then

5x² + 21x + 7 = 0

6 0
3 years ago
A hexagonal pyramid is cut by a plane as shown in the diagram. What is the shape of the resulting cross section?
tiny-mole [99]
Cross section is a surface that is exposed after slicing or making a cut through an object. If a hexagonal pyramid is cut horizontally then the cross section should be an hexagon as well since the base is a hexagon. However, when it is cut vertically the resulting shape would be a triangle.
8 0
3 years ago
Read 2 more answers
Other questions:
  • A train traveling south leaves the station at a constant rate of 62 kilometers per hour. A second train traveling north leaves t
    6·2 answers
  • A car uses !5 gallons of gas to go 330 miles. How much will the car need to go 450 miles?
    11·1 answer
  • A new wireless printer costs $99.99 in the store. what would your total cost be if sales tax is 9.5%
    10·1 answer
  • I would appreciate it v much if someone would help me out with this
    5·1 answer
  • What is the equation of this graphed line?<br> Enter your answer in slope-intercept form
    10·2 answers
  • 5+x/2 greater than or equal to 10
    13·1 answer
  • 2 [32-(4-1) power of 3
    5·1 answer
  • Consider this absolute value function.
    15·1 answer
  • John's patio is 5 feet long<br> and has an area of 1.30<br> square feet<br> How wide is the patio?
    13·1 answer
  • The sum of the digits of a two-digits numeral is 10. The number named by the numeral is 18 more than the number named when the d
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!