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
laila [671]
3 years ago
7

Please help me!! 100 points!! A student solved the equation sin2x/cosx =2 ‘ 0=< x =< pi and found an answer of pi/2 descri

be the students error in 2-3 sentences
Mathematics
1 answer:
muminat3 years ago
3 0

Answer:

sin(2x)/cos x = 2sin x*cos x/ cos x = 2 sin x = 2

sin x = 1

x = pi/2

but cos pi/2 = 0

so the given equation is indeterminate for x = pi/2

Step-by-step explanation:

You might be interested in
Please help number 9
Ira Lisetskai [31]

Answer:

Option A. 95x + 133y square feet.

Step-by-step explanation:

Area of a rectangular room = Length × Width

Length of the room = Length of carpeted portion + Length of the tiled portion

= (5x + 7y) feet

Width of the living room = 19 feet

Area of the living room = (5x + 7y) × 19

                                      = 95x + 133y Square feet [By distributive property]

Therefore, expression for the total area of the living room is option (A).

3 0
3 years ago
PLEASE HELP ME WHAT AM I SUPPOSE TO DO?!
stepladder [879]

Answer:

Step-by-step explanation:

Angle 2= 50

angle 1= 180-50= 130 degrees (linear pair (sum 180))

angle 3= 130 degrees (vertically oposite angles are equal)

angle 6= 130 degrees (alternate interior angles)

angle 5= 180-130= 50 degrees (linear pair)

i hope this helps :)

8 0
3 years ago
Steve will roll a number cube, numbered 1-6, twice. What is the probability
Leni [432]

Answer:

25%

Step-by-step explanation:

First we calculate the probability of rolling a number greater than 3, that is, it can be 4, 5 or 6.

The probability of each number is 1/6, so:

P1 = (1/6) + (1/6) + (1/6) = 3/6 = 1/2

Then, we calculate the probability of rolling a prime number, that is, 2, 3 or 5.

As we have again 3 numbers, the probability P2 will also be 1/2

Then, the final probability is the product of both P1 and P2:

P = P1 * P2 = (1/2) * (1/2) = 1/4 = 25%

3 0
4 years ago
A Write two proper fractions whose denominators are not the same, but whose least common denominator is 12.
ki77a [65]
1)3/4 and 2/3 the LCD is 12

2)6/14

7 0
3 years ago
The length of a rectangle is 3 inches more than three times the width. The perimeter is 62 inches. Find the length and width.
IRISSAK [1]

Answer:

length= 24 inches

width= 7 inches

Step-by-step explanation:

Start by writing down what you know.

width= w

length= 3w+3

Then, we can substitute into the perimeter of a rectangle equation, P=2l+2w.

62= 2(3w+3) + 2(w)

62=6w+6+2w

62=8w+6

56=8w

7=w

Now, plug this into our original equations for length and width:

width=7

length= 3(7)+3, so 24

4 0
4 years ago
Other questions:
  • On the Fahrenheit scale the difference between the freezing and boiling point of water is 180 degrees. On the Celsius scale the
    9·1 answer
  • Greatest common factor the answer to 10 and 70
    7·1 answer
  • You are working as a caterer and need 20 gallons of lemonade for an upcoming event. The bottles of lemonade you are purchasing a
    14·1 answer
  • The length of a pole is to be 6.5 ft.The actual length of the pole may vary by as much as 0.02ft. Write an absolute value inequa
    13·1 answer
  • 382 milliliters equals to how many liters
    15·2 answers
  • 4x2 - 12x + 9 can be factored as (2x - 3)(2x - 3)<br><br> True<br><br> False
    11·2 answers
  • Which number is the same value of20 tens
    11·2 answers
  • Find a quadratic function that includes the set of values below.
    11·1 answer
  • Pls help I’ll brainlest<br><br> Pls help show ur work
    8·1 answer
  • olympus mons, one of the largest volcano on mars has a diameter of 550 kilometers. what is the approximate area of the olympus m
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!