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
jenyasd209 [6]
3 years ago
14

I need help!! It’s proving trapezoids theorems

Mathematics
2 answers:
sweet [91]3 years ago
7 0

Because ABCD is an isosceles trapezoid, the angles A and D are congruent.

BA and CD are congruent (given) and AD is congruent to itself (reflexive property).

Then triangles BAD and CDA form a pair of SAS triangles, so they are congruent.

BD and CA are corresponding parts in those triangles, so they are congruent (CPCTC).

kotegsom [21]3 years ago
3 0

Answer:

see picture

Step-by-step explanation:

You might be interested in
A farmer is fencing a 270 ft by 330 ft rectangular pasture. Posts are to be placed every 6 ft. how many posts are needed?
vazorg [7]
100 posts have to be placed
4 0
2 years ago
Read 2 more answers
Fiona divided 3x2 5x – 3 by 3x 2. the expression represents the remainder over the divisor.what is the value of a?
Pavel [41]
If Fiona is to divide the first expression by the second one, clearly only the first term of the first expression is divisible. The remaining terms of the fist expression will remain as the remainder. The remainder from the division done by Fiona should be 5x - 3. 
5 0
3 years ago
(X^4)-(45x^2)+324 what are the zeroes? And how many turning points?
dmitriy555 [2]

Zeroes:

We must solve

x^4-45x^2+324=0

To do so, we define the auxiliary variable t=x^2. The equation becomes

t^2-45t+324=0

The quadratic formula yields the solutions

t=9,\quad t=36

Substituting back t=x^2 gives

x^2=9 \iff x=\pm 3,\quad x^2=36 \iff x=\pm 6

So, the zeroes are -6, -3, 3, 6.

Turning points:

Turning points are points where a function stops being increasing to become decreasing, or vice versa. Since functions are increasing when their first derivative is positive and decreasing when it's negative, turning points are points where the first derivative is zero.

We have

f(x)=x^4-45x^2+324 \implies f'(x)=4x^3-90x

If we set the derivative to be zero, we have

4x^3-90x=0 \iff x(4x^2-90)=0

So, the derivative is zero if x=0 or

4x^2=90 \iff 2x^2=45 \iff x^2=\dfrac{45}{2}\iff x=\pm\sqrt{\dfrac{45}{2}}

6 0
2 years ago
I’ll give you brainilest
chubhunter [2.5K]

Answer:

No, these triangles cannot lie on the same line.

Step-by-step explanation:

Step-by-step explanation: For two triangles to lie on the same line they must have the same slope. slopes are negative because the triangles are leaning to the left.

8 0
2 years ago
Read 2 more answers
Find the vertex of this parabola:<br> y = -x2 + 6x - 8
skelet666 [1.2K]

Answer:

4x-8

Step-by-step explanation:

y=-x2+6x-8

y=4x-8

4 0
3 years ago
Other questions:
  • What is the constant of variation for the quadratic variation? x 2 3 4 5 6 y 24 54 96 150 216
    9·1 answer
  • A square kitchen floor has an area 500 ft.² estimate the length one wall to the nearest 10th of a foot
    13·1 answer
  • Kevin claims he can draw a trapezoid with three right angles. Is this possible? Explain.
    6·2 answers
  • What are ordered pairs of y=8x
    5·1 answer
  • Given the linear equation 2x+y=6, perform the necessary operations to put the equation into the proper general form. Include the
    14·1 answer
  • You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of
    10·1 answer
  • Jake deposits $220 in an account every year on his birthday. The account earns 3.2% simple interest and the interest is sent to
    15·1 answer
  • For every 9 miles lana jogged. Victor jogged 5 miles. If lana jogged 1 how many miles would Victor have jogged?
    9·1 answer
  • Graph the solutions of the linear inequality −2x + 2y ≥ −4.
    12·1 answer
  • Find the value of x - this is circle segments.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!