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
inna [77]
3 years ago
10

Someone please help me!!!!11

Mathematics
1 answer:
serious [3.7K]3 years ago
4 0
The U stands for union. Combine A and B


Hope that helps!!
You might be interested in
1.) Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth .x squared minus 21 x equals n
Andrew [12]
Part 1
We are given x^2-21x=-4x. This can be rewritten as x^2-18x=0.
Therefore, a=1, b=-18, c=0.
Using the quadratic formula
     x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-\left(-18\right)\pm \sqrt{\left(-18\right)^2-4\left(1\right)\left(0\right)}}{2\left(1\right)}
     x=\frac{18\pm 18}{2}

The values of x are
     x_1=\frac{18-18}{2}=0
     x_2=\frac{18+18}{2}=18

Part 2
Since the values of y change drastically for every equal interval of x, the function cannot be linear. Therefore, the kind of function that best suits the given pairs is a quadratic function. 

Part 3.
The first equation is y=x^2+2.
The second equation is y=3x+20.

We have 
     x^2+2=3x+20
     x^2-3x-18=0
Factoring, we have 
     \left(x-6\right)\left(x+3\right)=0
Equating both factors to zero.
     x_1-6=0\rightarrow x_1=6
     x_2+3=0\rightarrow x_2=-3

When the value of x is 6, the value of y is 
     y=3\left(6\right)+20=38

When the value of x is -3, the value of y is 
     y=3\left(-3\right)+20=11

Therefore, the solutions are (6,38) or (-3,11)
7 0
2 years ago
ASAP! GIVING BRAINLIEST! Please read the question THEN answer CORRECTLY! NO guessing. Show your work OR give an explaination.
netineya [11]

Answer:

Its B

Step-by-step explanation:

B

7 0
2 years ago
Please can someone help me with my maths? I’m so confused
Blababa [14]
The y intercept is 0.5 because thats where the line starts.
the slope/gradient of the line is 1.5.
this would be written in the form: y=1.5x+0.5
5 0
3 years ago
1.) If 60% of a number is 18, what is 90%of the number?
ICE Princess25 [194]
Question Two is D. $14.80
7 0
3 years ago
Read 2 more answers
The data show the number of pieces of mail delivered to a single home address each day for three weeks.
blsea [12.9K]

A dot plot would show 7 points for numbers greater than 2.

A histogram would have a maximum of 7 bars.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What property is this?6x+9/3=2x+3
    9·1 answer
  • Please help I need to finish my homework
    12·1 answer
  • Please help i’m stressing.
    7·2 answers
  • Find the derivative of f(y)=9tan(y)-\sqrt{y}/4-10/y^5\sqrt{y}[/tex]
    10·1 answer
  • Will multiplying 3.14 by a fraction result in a rational answer
    11·1 answer
  • HELP 10 POINT FOR THIS EQUATION!
    7·1 answer
  • Evaluate the expression w² - v + 1 for w = -2 and v = -8.
    5·2 answers
  • Please Help Me i will Give Brainliest
    7·2 answers
  • .<br> -2/3 divided by 1/2
    15·1 answer
  • Multiply and combine like terms:<br> -5x – 4(9 – 2x)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!