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
telo118 [61]
3 years ago
9

Quadrilateral ABCD is a square with diagonals that intersect at point E. Find angle ADB. A. 11.25º B. 22.5º C. 45º D. 90º

Mathematics
2 answers:
never [62]3 years ago
7 0

IT WOULD BE "D" I BELIEVE

HOPE IM RIGHT AND THIS HELPS


Sedaia [141]3 years ago
3 0

Answer:

its c i just took the test

Step-by-step explanation:

You might be interested in
two stores sell the same computer for the same orginal price. store a advertises that the computer is 25% off the orginal price.
Gnoma [55]
That means that the discounts are the same
therfor 25% of original=180
multiply both sides by 4 or divide both sides by 0.25
original=720




the equation is
0.25 times original=180


and the original price is $720
4 0
3 years ago
Write the product as a sum: 14cos(39x)sin(19x)
charle [14.2K]

Recall that

sin(<em>a</em> + <em>b</em>) = sin(<em>a</em>) cos(<em>b</em>) + cos(<em>a</em>) sin(<em>b</em>)

sin(<em>a</em> - <em>b</em>) = sin(<em>a</em>) cos(<em>b</em>) - cos(<em>a</em>) sin(<em>b</em>)

Adding these together gives

sin(<em>a</em> + <em>b</em>) + sin(<em>a</em> - <em>b</em>) = 2 sin(<em>a</em>) cos(<em>b</em>)

To get 14 cos(39<em>x</em>) sin(19<em>x</em>) on the right side, multiply both sides by 7 and replace <em>a</em> = 19<em>x</em> and <em>b</em> = 39<em>x</em> :

7 (sin(19<em>x</em> + 39<em>x</em>) + sin(19<em>x</em> - 39<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

7 (sin(58<em>x</em>) + sin(-20<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

7 (sin(58<em>x</em>) - sin(20<em>x</em>)) = 14 cos(39<em>x</em>) sin(19<em>x</em>)

4 0
3 years ago
Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers
Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the x^2 coefficient is 1, i.e. the equation is written like x^2+bx+c=0, then you can say the following about the coefficients b and c:

  • b is the opposite of the sum of the roots
  • c is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

  • 4+(-2) = 4-2 = 2 \implies b = -2
  • 4 \cdot (-2) = -8 \implies c = -8

So, the equation is x^2-2x-8=0

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

  • \dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}
  • \dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}

And so the equation is

x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0

In order to have integer coefficients, you can multiply both sides of the equation by 8:

8x^2 - 10 + 3 = 0

5 0
3 years ago
What is 6/2(1+2)? Correct answers only please!!
kherson [118]

Answer:

your answer is 9

hope this helps xx

8 0
3 years ago
Read 2 more answers
Any help on this pleasee anyone??
meriva
False, it would not make a right triangle
8 0
3 years ago
Other questions:
  • In Mr.Martinez's sixth period class, there are 8 boys and 12 girls. what is the probability of randomly selecting a girl?
    7·2 answers
  • Solve the system of equations using elimination.
    12·1 answer
  • Vita has a piece of ribbon that is 5 meters long she cuts the ribbon into pieces that are each 1/3 meters long how many pieces d
    5·2 answers
  • Find the length of the segment indicated.
    14·2 answers
  • You have a coupon for 10% off the sale price of a surfboard. which is the better buy? explain your reasoning. ● 40% off the regu
    15·2 answers
  • Find the image of (-1,2) reflected over the y-axis
    11·2 answers
  • Write the equation of the line fully simplified slope-intercept form.
    10·1 answer
  • Your friend grace needs help to find the values of x,y and z in the figure below
    13·1 answer
  • The Ears-to-the-Wind Car Rental charges $100 per day and 11 cents per mile to rent a sport utility
    9·1 answer
  • A person is playing a video game where the number of aliens that appear on a level triples each time from the previous level. Le
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!