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
amid [387]
2 years ago
13

Which of the following points is the solution of the quadratic equation : 3x² - 5x-2=0​

Mathematics
1 answer:
snow_tiger [21]2 years ago
4 0

Answer:

answer in the file

Step-by-step explanation:

You might be interested in
What is mayla's percent weight loss if she went from<br> 120 pounds to 105 pounds.
erik [133]

Answer:

the answer is 15 pounds less

7 0
2 years ago
Read 2 more answers
HELP PLEASE!!!!!!!!!!!
Elza [17]

Step-by-step explanation:

1)y=17-2=15

2)y=17-6=11

3)y=17-8=9

4y=17-10=7

6 0
3 years ago
Read 2 more answers
|w|=6 algebra answer
BARSIC [14]

w = 6
Hmmm... Strange very very strange. The bars around the w represent absolute value, and whatever is inside those bars always yields a positive answer. So, |-87| = 87 or |-8| = 8 or even |5|=5
8 0
3 years ago
HELPPPP JUST 2 QUESTIONS BASED ON PYTHAGOREAN THEOREM AND IM CONFUSED HELPPPP​
Anna007 [38]

9514 1404 393

Answer:

  3. no; does not have the correct ratio to other sides

  4. (1; right), (2; obtuse), (3; right)

Step-by-step explanation:

3. There are a couple of ways you can go at this.

a) the ratio of sides of a 30°-60°-90° right triangle (half an equilateral triangle) is 1 : √3 : 2. Here, the ratio of sides is ...

  (√30/2) : √15 : √30 = 1 : √2 : 2 . . . . MQ is <em>not</em> the height

b) the height is perpendicular to the base, so if MQ were the height, the sides of the triangle would satisfy the Pythagorean theorem:

  LQ² +MQ² = LM²

  (√30/2)² +(√15)² = (√30)²

  30/4 +15 = 30

  22.5 = 30 . . . . NOT TRUE

The length MQ cannot be the height of ∆LMN. (It is too short.)

__

4. To see if these lengths form a right triangle, you can test them in the Pythagorean theorem relation. In the attached we have reformulated the equation so it gives a value of 0 if the triangle is a right triangle:

  c² = a² +b² . . . . . Pythagorean theorem

  c² -a² -b² = 0 . . . . rewritten

If the value of c² -a² -b² is not zero, then the side lengths do not form a right triangle. The attached shows this math performed by a graphing calculator. The results are ...

  1. right triangle
  2. not a right triangle — long side is too long, so the triangle is obtuse
  3. right triangle

_____

<em>Additional comment</em>

The attached table demonstrates an artifact of computer arithmetic. Not all numbers can be represented exactly in a computer, so a difference that is expected to be zero using exact arithmetic may be slightly different from zero when computed by a computer or calculator. Here, we see a difference of about 6×10^-14 when zero is expected. On most calculators (with 10, or 12 displayed digits), this would be displayed as 0.

The same calculation done "by hand" gives ...

  (√425)² -5² -20² = 425 -25 -400 = 0 . . . Triangle 1 is a <em>right triangle</em>

4 0
2 years ago
What is the slope of a line that is perpendicular to a line whose equation is −2y = 3x + 7 ? Enter your answer in the box.
drek231 [11]
I was just on this .
8 0
3 years ago
Read 2 more answers
Other questions:
  • What can multiply to give you 80 but add up to give you 11
    13·1 answer
  • When Steve woke up. His temperature was 102 F. Two hours later it was 3 degrees lower. What was his temperature then?
    5·1 answer
  • Sam can prepare 20wall paintings in four weeks how much time will he need to prepare 80 wall paintings
    10·2 answers
  • Which distance measurment is most precise? <br> a. 2.57 <br> b. 1 <br> c. 10 <br> d. 26.3
    15·1 answer
  • The owner of a 4000-gal oil truck loads the truck with gasoline and keroseno. The profit on each gallon of gasoline is 16e and o
    6·1 answer
  • Can anyone help me with this question
    6·1 answer
  • F(x)=4x-3, g(x)=10-x<br> Work out gf(x)?
    12·1 answer
  • A team of five people is formed from 8boys and 5 girls.the probability that the team contains at least 3girls is?​
    15·2 answers
  • Two fair dice are rolled simultaneously. The probability that 5 will come up at least once is
    15·1 answer
  • if an object is dropped from a height of 144 ft the function h t equals negative 16 t squared + 144 gives the height of the obje
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!