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
Burka [1]
3 years ago
14

What has,parallel sides but is not a trapezoid

Mathematics
1 answer:
mr Goodwill [35]3 years ago
4 0
Rectangle, has parallel sides but it is not a trapezoid
You might be interested in
During which two months do both the Northern and Southern Hemispheres receive the same amount of energy from the Sun?
Drupady [299]

Answer: The correct answer is March and September

pls mark brainliest

6 0
2 years ago
Read 2 more answers
Show tan(???? − ????) = tan(????)−tan(????) / 1+tan(????) tan(????)<br> .
anyanavicka [17]

Answer:

See the proof below

Step-by-step explanation:

For this case we need to proof the following identity:

tan(x-y) = \frac{tan(x) -tan(y)}{1+ tan(x) tan(y)}

We need to begin with the definition of tangent:

tan (x) =\frac{sin(x)}{cos(x)}

So we can replace into our formula and we got:

tan(x-y) = \frac{sin(x-y)}{cos(x-y)}   (1)

We have the following identities useful for this case:

sin(a-b) = sin(a) cos(b) - sin(b) cos(a)

cos(a-b) = cos(a) cos(b) + sin (a) sin(b)

If we apply the identities into our equation (1) we got:

tan(x-y) = \frac{sin(x) cos(y) - sin(y) cos(x)}{sin(x) sin(y) + cos(x) cos(y)}   (2)

Now we can divide the numerator and denominato from expression (2) by \frac{1}{cos(x) cos(y)} and we got this:

tan(x-y) = \frac{\frac{sin(x) cos(y)}{cos(x) cos(y)} - \frac{sin(y) cos(x)}{cos(x) cos(y)}}{\frac{sin(x) sin(y)}{cos(x) cos(y)} +\frac{cos(x) cos(y)}{cos(x) cos(y)}}

And simplifying we got:

tan(x-y) = \frac{tan(x) -tan(y)}{1+ tan(x) tan(y)}

And this identity is satisfied for all:

(x-y) \neq \frac{\pi}{2} +n\pi

8 0
3 years ago
2) Simplify (do not<br> worry about trying<br> to show work)<br> 7/8 divided by 4/1
yawa3891 [41]

Answer:

3.5 i hope that help

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
X÷2+4 greater than 7​
denpristay [2]
I’m am almost sure it’s true it should look like this X
__ > 7
2+4
8 0
3 years ago
after spending 7/9 of a three hours examination, a student left the exams hall. How many minutes has he to complete the duration
Montano1993 [528]
40 mins left! total time= 60 mins x 3 hours =180 mins. 180 divided by 9 is 20. 20 times 7 is 140. 180-140 equals 40. yay!
6 0
3 years ago
Other questions:
  • Solving a word problem with two unknown using a linear equation
    15·1 answer
  • The height of a cone is two times its base diameter. What is the volume of the cone in terms of its base radius r?
    8·1 answer
  • An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 3427 feet and Plane B is at an altitude
    5·2 answers
  • Which expression is equivalent to the expression 5(3x+4-x)
    9·1 answer
  • Find the equation 3(x +5)+(3x +5)<br><br>​
    9·1 answer
  • A rectangle with area 36 square inches has a length that is 3 less than 3 times the width. Find the length and the width of the
    7·1 answer
  • PLEASE HELP MEEE! DON'JOKING PLEASEEE!
    8·2 answers
  • HELP FAST LOL HAHAHAH
    6·1 answer
  • Help this is due in a few minutes!!<br>​
    14·2 answers
  • What is the y-intercept of the function /(x) = -2/9x + 1/3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!