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Dmitry [639]
3 years ago
7

Why do you have to show work for math

Mathematics
2 answers:
Anton [14]3 years ago
7 0
One of the main reasons you have to show work for math is because your teacher needs to know that you understand the concept. Also, showing work helps your teacher know that you didn't cheat using an online calculator that just gives you an answer.
denis23 [38]3 years ago
5 0
When you show your work in math if you get the question wrong you can check and see where you messed up and then ( if your teacher will let you ) you can fix the question
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Write an equation of a line that is parallel to the line y<br> 4x +3
maxonik [38]

Answer:

y=4x+4

Step-by-step explanation:

There are infinite answers

All you have to do is changed the last number 3, to any real number greater or less than 3

4 0
3 years ago
What error did zacharias make? the –5 should be 5. the 52 should be –52. the 2 in the numerator should be –2. the 2 in the denom
Contact [7]

The error made by zacharias in solving the quadratic equation 0 = -2x² + 5x - 3 using quadratic formula is; the 2 in the numerator should be –2.

<h3>Quadratic equation</h3>

There are four methods of solving quadratic equation. Namely;

  • Factorization method
  • Completing the square method
  • Graphical method
  • Formula method

0 = -2x² + 5x - 3

  • Using quadratic formula

x = -b ± √b² - 4ac / 2a

where,

  • a = -2
  • b = 5
  • c = -3

x = -b ± √b² - 4ac / 2a

x = -5 ± √5² - 4(-2)(-3) / 2(-2)

= -5 ± √25 - (24) / -2

= -5 ± √1 / -2

= -5/2 ± 1/2

= -5/2 - 1/2 or x = -5/2 + 1/2

= -5-1 / 2 or -5+1/ 2

x = -6/2 or -4/2

x = -3 or -2

Therefore, the solution to the quadratic equation is x = -3 or -2

Learn more about quadratic equation:

brainly.com/question/1214333

#SPJ1

6 0
2 years ago
Need help please!!!!
Orlov [11]

Answer:

\frac{m + n}{m - n }  =   \frac{ - 8 + 4}{ - 8 - 4}

=-4/-12=1/3 is your answer

5 0
3 years ago
Suppose you can buy a box of 10 shirts for $42. How much is each shirt?
Fofino [41]

Answer:

each shirt is $4.20

Step-by-step explanation:

42/10 = 4.2

4 0
3 years ago
Read 2 more answers
Do the points A(-2,1), B(-2,4), C(3, 4), D(3, 1) form a square?
monitta

Answer: i don't think they do

Step-by-step explanation: tell me if i wrong

8 0
3 years ago
Read 2 more answers
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