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
Rudiy27
3 years ago
7

The sentence 3+(5+2)=(5+2)+3 illustrates

Mathematics
1 answer:
valentina_108 [34]3 years ago
4 0
C is the answer over all
You might be interested in
Solve by the elimination method. Show your work <br> 2x – 5y = 1<br> 3x – 4y = -2
svlad2 [7]
Hello,

2x-5y=1 |3|4
3x-4y=-2|-2|-5
------------------------

-7y=7 ==>y=-1
-7x=14==>x=-2

sol={(-2,-1)}

3 0
3 years ago
Why is it valid to say that both a function and its inverse describe the same relationship
liberstina [14]
A comparison between a function and its inverse would show that the domain and range of the original function swap. The domain of the function becomes the range of the inverse, the range of the function becomes the domain of its inverse. 

Looking at ordered pairs of the function and its inverse would look like this:

(2,4) on the original function becomes (4,2) on the inverse. 

While the graph of a function and its inverse are noticeably different an important thing to note is that it is merely a reflection across the line y=x. 

So even though they appear different you are looking at the same relationship just as y vs. x instead of x vs. y
4 0
3 years ago
Simplify -5x(x - 3y)
jenyasd209 [6]
Start by distributing -5x into x then into -3y. So -5x times x equals -5x^2( -5x squared), then -5 times -3y, equals 15xy so your answer is -5x^2 + 15xy.
4 0
3 years ago
Solve for b.<br> 2/3+5=20-b
xenn [34]
The answer is B=14 1/3
6 0
2 years ago
A photographer is 6 feet tall and cast a shadow that is 2 feet long. He is photographing a palm tree with a shadow that is 7 fee
Novay_Z [31]

Answer: The height of the tree is 21 feet.

Step-by-step explanation:

Here we can assume that the angle at which the sun impacts the photographer and the tree to be the same angle.

Then we can think in both cases as triangles rectangles, where the height is a cathetus, and the shadow is the other cathetus.

Then we will have a relationship like:

Tg(angle) = shadow/height

height = shadow/Tg(angle)

Now, because for both triangles we have the same angle, then Tg(angle) will be the same number for both cases, and we can just think of it as constant K

Tg(angle) = K

Then we have the equation:

Height = Shadow/K

We know that the photographer is 6ft tall, and his shadow is 2 ft long, we can replace those two things in the above equation and find the value of k:

6ft = 2ft/K

K = 2ft/6ft = (1/3)

Now we know that the shadow of the tree is 7ft long, then the height will be:

height = 7ft/(1/3) = 7ft*3 = 21ft

The tree is 21 ft tall.

6 0
3 years ago
Other questions:
  • Solve the system of equation 2x-9y=14 x=-6y+7
    6·2 answers
  • F = {(-1, 2), (3, 2), (4, 2), (0, 2)} Is F a function and why/why not?
    9·1 answer
  • How do I solve this 45 45 90 triangle
    7·1 answer
  • Find the surface area of the part of the paraboloid z=5-3x^2-2y^2 located above the xy plane. (10 points) z
    15·1 answer
  • Diane, Alan, and Jim have a total of $108 in their wallets. Jim has 4 times what Alan has. Alan has $6 less than Diane. How much
    15·1 answer
  • Melissa exercises for 20 minutes every day. She decides to increase her daily exercise time by 5 minutes each week. However, acc
    5·1 answer
  • What is 45 to the 3rd power?
    8·2 answers
  • If I have 2 sticks of butter and need 2. How much do I need???
    6·2 answers
  • NEED HELP WITH THESE QUESTIONS ASSAP
    8·1 answer
  • Find (fog)(x).<br> f(x) = 2x + 6<br> g(x) = −3x - 10<br> Please help me
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!