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
kotykmax [81]
3 years ago
11

PLS HELP ILL GIVE U POINTS :)

Mathematics
2 answers:
denpristay [2]3 years ago
8 0

Answer:

Step-by-step explanation:

TEA [102]3 years ago
3 0

Answer:

The said explanation is the answer.

Step-by-step explanation:

1) Graphing the first function (y = 2x-1). When the exponents of the variables are all 1, that is there are no square, cubes, etc. the equation is a line. Then it is enough to find two points to draw it. We can calculate two points assigning a number to x and calculating the corresponding number for y. For example, when x= 0 y= 2 times 0 -1 = -1. Then the line will pass from the point (0,-1). We need a second point, we can take x=1, then y = 2 times 1 -1 = 1. The line will pass from (1,1). We can mark the two points on the plane and draw the line from these two points.  

2) Graphing the second function (y = x^2-9). A quadratic equation is of the form: ax^2+bx+c= 0. We have: y= f(x) -9. Set y=0. We have the quadratic equation: x^2-9=0. Using the algebraic identity: a^2-b^2=(a+b)(a-b). We can rewrite x^2-9=0 as x^2-3^2=0: [(x+3)(x-3)=0] - [(x+3)=0,(x-3)=0] - [x= -3, x= 3]. Hence, there are two solutions for x. So we have two x-intercepts: (-3,0) and (3,0). To find the y-intercept, set x=0: [(y = (0)^2-9=0)] - [(y=-9)]. Hence the y-intercept: (0,-9)

In conclusion, this system of equations at most has two real solutions, since two points of both functions intersect each other.

Here's the graph:

Download docx
You might be interested in
Factor completely:<br>64 - y^3
madam [21]
From your equation, you can see that you have a difference of two cubes (aka two cubes being subtracted): 64, which is 4^{3}, and y^{3}.

There is rule for the difference of two cubes:
The difference of two cubes is equal to the difference of the cube roots times a binomial, which is the sum of the squares of the roots plus the product of the roots.

That sounds pretty confusing, but it's much easier to understand when put mathematically. Let's say our two cubes are a^{3} and b^{3}. The difference of those two cubes is:
a^{3} - b^{3} = (a - b)( a^{2} + ab + b^{2})

In our problem, a = 4 (since a^{3} = 64) and b = y (since b^{3} = y^{3}. Plug these values into the rule to find the factor of 64 - y^3:
64 - y^3 \\&#10;= (4 - y)( 4^{2} + 4y + y^{2}) \\&#10;=  (4 - y)( 16 + 4y + y^{2})

-----

Answer: (4 - y)( 16 + 4y + y^{2})

8 0
3 years ago
Answer this for me please?
Nady [450]
Draw a rectangle and make one side 16 and the other side 2

6 0
3 years ago
Read 2 more answers
11. What is the value of x in the figure at the right? (Examples 3 and 4)
natka813 [3]

Answer:

x = 11

Step-by-step explanation:

  • Vertically opposite angles are equal
  • Angles around a point add up to 360°

Therefore, 15x + 15x + 15 + 15 = 360

\implies 30x+30=360

\implies 30x=330

\implies x=11

6 0
3 years ago
If the exchange rate when converting US Dollars to ZA rands is $1=R17
NikAS [45]

Answer:

200 US DOLLARS

Step-by-step explanation:

Given; $1=R17

To find: How much is Zar3400 in US DOLLARS

$1=R17

R3400=3400/17 US DOLLARS

=200 US DOLLARS

Hope my answer is right thank you.

5 0
2 years ago
What is the formal for surface area for a rectangular prism​
tester [92]

Answer I guess:

A = Length times width

8 0
3 years ago
Read 2 more answers
Other questions:
  • I will give braniest to whoever explains this to me the best.. 25 points just for answering!
    7·1 answer
  • Gabriella swims 2 laps per minute. What is the rate unit?
    5·2 answers
  • The population of Mexico has been increasing at an annual rate of 1.7% . If the population was 100,350,000 in the year 2000, pre
    10·2 answers
  • The glass is filled 2 inches from the top how many cubic inches of water is inside the glass
    8·1 answer
  • Which fraction is not equivalent to 7 /30
    11·2 answers
  • What type of association (positive, negative, no) is shown between the price of a ticket and concert attendance?
    7·1 answer
  • Help! this is due in 2hrs.!!!!!!!!! HELP ASAP!
    12·2 answers
  • Jayden drives 22.5 miles in 30 minutes. If he drove one hour in total at the same rate, how far did he go? Before you try that p
    12·2 answers
  • a 2.5kg mass is held above the ground and has 50 J of gravitational potential energy. the mass is then dropped and accelerates t
    5·1 answer
  • Which number is in the solution set of the inequality -5x - 7 &gt; 28?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!