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
ki77a [65]
3 years ago
11

Which property is illustrated by 3 + (2x + 4) = (3 + 2x) + 4

Mathematics
1 answer:
antoniya [11.8K]3 years ago
6 0

Answer:

The answer is c, The commutative property of addition

Step-by-step explanation:

You might be interested in
What is the rule for the pair?
mylen [45]
2
to work it out just go output f (x) - input x so, 3 - 1 = 2 and double check this using your next equations 4 - 2 = 2
5 0
3 years ago
What is the domain and range of the function y = 2x2 - 4x - 10?
11111nata11111 [884]

Answer:

Step-by-step explanation:

The domain of all polynomials is all real numbers.  To find the range, let's solve that quadratic for its vertex.  We will do this by completing the square.  To begin, set the quadratic equal to 0 and then move the -10 over by addition. The first rule is that the leading coefficient has to be a 1; ours is a 2 so we factor it out.  That gives us:

2(x^2-2x)=10

The second rule is to take half the linear term, square it, and add it to both sides.  Our linear term is 2 (from the -2x).  Half of 2 is 1, and 1 squared is 1.  So we add 1 into the parenthesis on the left.  BUT we cannot ignore the 2 sitting out front of the parenthesis.  It is a multiplier.  That means that we didn't just add in a 1, we added in a 2 * 1 = 2.  So we add 2 to the right as well, giving us now:

2(x^2-2x+1)=10+2

The reason we complete the square (other than as a means of factoring) is to get a quadratic into vertex form.  Completing the square gives us a perfect square binomial on the left.

x^2-2x+1=(x-1)^2 and on the right we will just add 10 and 2:

2(x-1)^2=12

Now we move the 12 back over by subtracting and set the quadratic back to equal y:

2(x-1)^2-12=y

From this vertex form we can see that the vertex of the parabola sits at (1,-12).  This tells us that the absolute lowest point of the parabola (since it is positive it opens upwards) is -12.  Therefore, the range is R={y|y ≥ -12}

4 0
3 years ago
Please help asap!!!!
Y_Kistochka [10]
The large rectangle is 3 times 6 but theres two so its 2 x 3 x 6

the medium rectangle is 2 times 6 but again there is two so  2 x 2 x 6

the small rectangle is 2 times 3 and once more there is two so 2 x 2 x 3

7 0
3 years ago
Are the two events “choosing a sophomore” and “choosing someone who replied ‘Yes’” independent events?
4vir4ik [10]
Yes, they are independent event such that occurring the first event “choosing a sophomore” does not affect the probability of occurring the second event <span>“choosing someone who replied ‘Yes’”</span><span />
5 0
3 years ago
Can someone help me with this please?
Elena-2011 [213]
29.) This is simply interpreting the linear function.
The function:
96+2.1x
a.) The 96 is what you start with from the beginning. So, we know Rachel weighed 96 ounces when she was born.
b.) Again, interpretation. The 2.1 is the slope, or the change in the line. So we know that Rachel gains 2.1 ounces each day.
30.) For this one, you just have to plug 9 into the equation for x.
6 0
3 years ago
Other questions:
  • Given H(t)=10-2t^2 , find h^-1 (t)
    12·1 answer
  • Solve the inequality. -8(1-x)+x&gt;-(8-2x)+8
    9·1 answer
  • What is the transformation that occurs to the equation y = 2x if it changes to y = 2x-3?
    14·1 answer
  • what is the answer to the volleyball team at blue point high school has saved $680 and the team plans to spend no more then that
    11·1 answer
  • someone please help, write in point-slope form an equation of the line that passes through the point (8, 9) with slope 7.
    12·1 answer
  • What is the correct answer of this question<br>I gave 20 points<br>And I also mark brainlist
    14·1 answer
  • If you were given the choice of between more initial zombies, but a slower growth rate or fewer initial zombies, but a greater g
    5·2 answers
  • If x = -5 and y = 2x^2, <br> then y = ? *
    9·1 answer
  • HELP PLEASEEEEEEEEO ITS EASY IF U LIKE RECTANGLESoo
    10·2 answers
  • At an appliance store, the price of a refrigerator is marked up 25% to $406.25.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!