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
lara [203]
3 years ago
8

Suppose a - b = 0 which expression equals a + b?

Mathematics
1 answer:
AlekseyPX3 years ago
8 0

Hello from MrBillDoesMath!

Answer:

Choice e  (2a)

Discussion:

a - b = 0   =>  a = b    (*)

So

a + b  = (b) + a             => commutative property and b = a from (*)

         = (a)  + a        

          = 2a

which is Choice e.

Thank you,

MrB

You might be interested in
Complete each equation so that it has the indicated number of solutions
Akimi4 [234]

Answer:

No solutions: 3x + 1 = 3x + b, where b ≠ 1

Infinite solutions: 2x - 4 = 2x - 4

Step-by-step explanation:

For an equation to have <em>no </em>solutions, it has to reduce to an equation that's never true. For our given equation, this means we'll need to fill in the blank with some value other than 1. If we pick 2, for instance, we'll get the equation 3x + 1 = 3x + 2, which reduces to 1 = 2, a false statement. No value of x will make the equation true.

To have <em>infinite </em>solutions, on the other hand, we need an equation that is <em>always</em> true. Filling in the blank with 4 here will give us one: 2x - 4 = 2x - 4 reduces to -4 = -4, a statement that is always true.

5 0
3 years ago
Raymond frequently dined at his favorite restaurant, Hungry Hippo. At his most recent visit, he paid his bill. If the bill had b
sertanlavr [38]

Raymond's change was $ 4.

Since Raymond frequently dined at his favorite restaurant, Hungry Hippo, and at his most recent visit, he paid his bill, and if the bill had been half as much, he would have gotten three times as much change, while if the bill had been two dollars more, Raymond would have gotten only half as much change as he actually did get, to determine how much was Raymond's change the following calculation must be performed:

  • 1 / 2X = 3Y
  • X + 2 = 1 / 2Y
  • X = Y
  • 2 = 1 / 2Y
  • Y = 2 x 2
  • Y = 4

Therefore, Raymond's change was $ 4.

Learn more in brainly.com/question/7328385

8 0
3 years ago
Alissa cut a piece of string that was 17 feet long. Lydia cut a piece of string that was 5 yeards long. Alissa wanted to cut her
Ray Of Light [21]

Answer:

Ffff

Step-by-step explanation:

8 0
3 years ago
Which of the following is the solution to the inequality below? -3(x-3) &gt; 5 -5x o A. x)-2 O &gt;&gt; c. x D. 2​
Gwar [14]
X>−2, it’s hard to read what your options are, but that’s the answer! Hope this helps !
7 0
3 years ago
Read 2 more answers
What percent of 180 is 9.9
Gre4nikov [31]

Answer:

5.5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • A national park has a population of 400 koalas. If the koala population is expected to increase by 3% p.a., the expected number
    15·1 answer
  • Gina's mother bought 200 lollipops and 150 pencils for goody bags for Gina's birthday. What is the largest number of goody bags
    13·1 answer
  • 21-9+ 4X minus 5X equals 8X subtract 7X +4+6
    8·2 answers
  • Identify the conic given by (x-8)^2/64 - (y-9)^2/4. = 1
    9·1 answer
  • Identify the coefficients for the following quadratic equation.
    10·1 answer
  • El solar de Maria tiene forma rectangular los lados miden 36 cm y 40 cm ¿Cuántos metros cuadrados tiene el terreno? ¿Cuál es el
    12·1 answer
  • Pleas homework due in 8 minutes plz plz help ASAP
    7·1 answer
  • Does this graph have a proportional relationship? Explain how you know.
    12·1 answer
  • Is this function linear or nonlinear?<br><br> y=3x−5<br><br><br> nonlinear<br><br> linear
    13·2 answers
  • Please answer me this problem!**NO LINKS** Thank you so much if you answer me =D
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!