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
maks197457 [2]
3 years ago
6

Explain why 2+x and x+3 are equivalent

Mathematics
1 answer:
wlad13 [49]3 years ago
5 0

Check whether the two expressions 2x+3y2x+3y and 2y+3x2y+3x equivalent.

The first expression is the sum of 2x2x 's and 3y3y 's whereas the second one is the sum of 3x3x 's and 2y2y 's.

Let us evaluate the expressions for some values of xx and yy . Take x=0x=0 and y=1y=1 .

2(0)+3(1)=0+3=32(1)+3(0)=2+0=22(0)+3(1)=0+3=32(1)+3(0)=2+0=2

So, there is at least one pair of values of the variables for which the two expressions are not the same.

You might be interested in
Given right triangle jkl, what is the value of cos(l)? five-thirteenths five-twelfths twelve-thirteenths twelve-fifths
kykrilka [37]

The value of the cosine ratio cos(L) is 5/13

<h3>How to determine the cosine ratio?</h3>

The complete question is added as an attachment


Start by calculating the hypotenuse (h) using

h^2 = 5^2 + 12^2

Evaluate the exponent

h^2 = 25 + 144

Evaluate the sum

h^2 = 169

Evaluate the exponent of both sides

h = 13

The cosine ratio is then calculated as:

cos(L) = KL/h

This gives

cos(L) =5/13

Hence, the value of the cosine ratio cos(L) is 5/13

Read more about right triangles at:

brainly.com/question/2437195

#SPJ1

3 0
2 years ago
Help me with math please, quickly
irga5000 [103]

Answer:

3\neq -3

False

Step-by-step explanation:

y=3x-9\\\\x-\frac{1}{3}y=-3

You substitute y for the second equation.

x-\frac{1}{3} y=-3\\\\x-\frac{1}{3}(3x-9)=-3

Then you have to distribute -\frac{1}{3} .

x-x+3=-3

Combine like terms.

3\neq -3

7 0
3 years ago
Read 2 more answers
A ball is thrown into the air from an apartment balcony and falls to the ground. The height of the ball, h metres, t seconds aft
andriy [413]

Answer:

1+2\sqrt{2} seconds

Step-by-step explanation:

When the ball hits the ground, its height will obviously be 0. Therefore, you can set up the equation the following way:

0=-5t^2+10t+35 \\\\-5(t^2-2t-7)=0

Plugging this into the quadratic equation, you get:

t=\dfrac{2\pm\sqrt{4+28}}{2}= \\\\\dfrac{2\pm4\sqrt{2}}{2}= \\\\1\pm2\sqrt{2}

Since the time must be positive, it takes the ball 1+2\sqrt{2} seconds to hit the ground, or around 3.828. Hope this helps!

7 0
3 years ago
Which of the following situations have a net sum of 0? Select three that apply.
statuscvo [17]

Answer:

B,C,E

Step-by-step explanation:

Done this before. A is the first and so on and so forth

7 0
2 years ago
Read 2 more answers
3. John and Nelly are cleaning their house. Nelly takes 3 hours longer than John if she cleans the house alone. If they can do t
swat32

Answer:

1 hour?

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Sharon has a rectangular bedspread that measures 3 feet by 5 feet. She wants to
    13·1 answer
  • Simplify the expression (4 + 5i)(4 - 5i).<br>16 - 20i<br>16 + 20i<br>-9<br>41​
    13·1 answer
  • A square pyramid and its net are shown below. What is the surface area of the pyramid?
    8·2 answers
  • The cheerleaders are selling tickets to a pasta dinner to raise money for new competition outfits. They plan to charge $6 per pe
    6·1 answer
  • write an equation in slope-intercept form for the line that satisfies the following condition. passes through (12,-4), perpendic
    5·1 answer
  • Choose the graph which represents the solution to the inequality:<br> 3x + 8 ≥ 11
    14·2 answers
  • What is the minimum number of degrees that a regular hexagon can be rotated before it carries onto itself?
    13·2 answers
  • For 3,4 identify the property of equality that would be used to solve the equation
    5·1 answer
  • Which relationship has a zero slope? 55 Points!
    8·1 answer
  • A Local restaurant offers burgers with a choice of the following toppings: cheese, lettuce, tomato, pickle, onion, jalapeños, a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!