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
Stella [2.4K]
2 years ago
13

Hi, so I know the answer to this problem (now that I got it wrong) but I'm not quite sure why I was wrong, help?

Mathematics
2 answers:
Maru [420]2 years ago
8 0

Answer:Because its -2x exponent of 2 so you cant do anything to that but you can touch the 2x it doesn't have a exponent so that's why but now since you did something to 2x you have to change 2x exponent of 2 into negative

Step-by-step explanation:

melisa1 [442]2 years ago
4 0

2x² + 2x + ? = x

⇒ ? = x - 2x² - 2x

⇒ ? = -2x² - x

Your answer is incorrect because 2x² - x² would mean x² is part of the answer, which is clearly incorrect.

You might be interested in
Find the indicated area under the curve of the standard normal​ distribution; then convert it to a percentage and fill in the bl
trapecia [35]

Answer:

About​ 99.74% of the area is between z = -3 and z = 3

Step-by-step explanation:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Area between z = 3 and z = -3

pvalue of z = 3 subtracted by the pvalue of z = -3

z = 3 has a pvalue of 0.9987

z = -3 has a pvalue of 0.0013

0.9987 - 0.0013 = 0.9974

0.9974*100 = 99.74%

About​ 99.74% of the area is between z = -3 and z = 3

8 0
3 years ago
Cuánto es 120 por 12<br>​
Novay_Z [31]

Answer:

120 x 12 = 1440

Step-by-step explanation:

7 0
3 years ago
What is the value of X? Enter your answer in the box
dmitriy555 [2]

Answer:

\large\boxed{x=26}

Step-by-step explanation:

\text{The angle}\ x^o\ \text{and}\ 64^o\ \text{together from both sidesr form a right angle.}\\\text{Therefore we have the equation:}\\\\x^o+64^o=90^o\qquad\text{subtract}\ 64^o\ \text{from both sides}\\\\x^o+64^o=90^o-64^o\\\\x^o=26^o

4 0
3 years ago
Read 2 more answers
A lottery game has balls numbered 1 through 15. What is the probability of selecting an even numbered ball or a 13?
LiRa [457]

Answer:

8 / 15

Step-by-step explanation:

Sample space = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}

Required outcome :

Even numbers = (2, 4, 6, 8, 10, 12, 14) or 13

Total required outcomes = 8

Probability = required outcome / Total possible outcomes

P(even number or 13) = 8 / 15

4 0
3 years ago
Im having trouble. can someone please help me with this !
VladimirAG [237]

Answer:

28

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Mr. Pratt has 26 students in his math class. He has
    6·1 answer
  • What is tanA?<br><br> A. 15/17<br><br> B. 8/17<br><br> C. 8/15<br><br> D. 15/8
    13·2 answers
  • Plz help don't get it
    14·1 answer
  • farmer Jim keeps 12 hens in every Coop if farmer Jim has 20 cups how many hens does he have in all if every hen lays 9 eggs on M
    5·2 answers
  • A corporation must appoint a​ president, chief executive officer​ (CEO), chief operating officer​ (COO), and chief financi
    15·1 answer
  • I need help plz help!!
    15·1 answer
  • How many squares should I shade if I have 25%
    13·2 answers
  • Find the distance between (-2,5) and (4,3).
    14·1 answer
  • Who ever gets it right gets a Brainliest
    11·1 answer
  • The diagonals of a rhombus are 30cm and 16cm. Find its area, the length of a side and its perimeter.​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!