Triangle CDA is the image of triangle ABC after a 1800 rotation around the midpoint of segment AC. Triangle ECB is the image of triangle ABC after a 1800 rotation around the midpoint of segment BC.
Explain why ABCD and ABEC are parallelograms.
Identify at least two pairs of congruent angles in the figure and explain how you know they are congruent.
Explain how to use what you know about the sum of the angles in a triangle to figure out the sum of the angles of quadrilateral ABED.
Answers
1. they both have 2 different congruent sides
2. angles ACD and BEC, since they are the same triangles, and are at congruent ends
3. since they are all the same triangle and has just been rotated some, you can figure out that it is the same triangle. once you figure out the angles for one of the triangles, you can figure outit for the other 2 since they are all congruent.
i hope this helped :)
Related Questions
PLEASE HELP, #30 and #40 !! DUE SOON
Answers
Answer:
38. x = 60
40. x = 10
Step-by-step explanation:
38.
The segment labeled 30 connects the midpoints of two sides of a triangle, so it is parallel and half the length of the third side.
x = 2 * 30 = 60
40.
Look at the big outer triangle.
Its left side has length x. It is made up of two segments that are congruent.
The right side of the big triangle is made up of two segments that are congruent and are also congruent to the segments of the left side. That makes the left and right sides of the big triangle congruent. This is an isosceles triangle, so its base angles are congruent. The left base angle measures 60, so the right base angle also measures 60. That means the top angle also measures 60. This triangle is isosceles and equilateral.
Since the segment measuring 5 has endpoints that are midpoints of two sides of a triangle, it is parallel to the third side and half its length.
The bottom side of the triangle measures 2 * 5 = 10. Since the triangle is equilateral, then x = 10.
SINE COSINE TANGENT If someone who acctually understand this could help me por favor :)
Answers
Answer:
here it is, hope it helps
Answer:
Step-by-step explanation:
sin M = [tex]\frac{3\sqrt{11} }{18} = \frac{\sqrt{11} }{6}[/tex]
cos M = [tex]\frac{15}{18} = \frac{5}{6}[/tex]
tan M = [tex]\frac{3\sqrt{11} }{15} = \frac{\sqrt{11} }{5}[/tex]
Solve for x.
Answer Choices:
7
8
9
-11
Answers
Answer:
x = -11
Step-by-step explanation:
Well the two equations add up to 180 because they are a linear pair.
x + 56 + x + 146 = 180 (collect like terms)
2x + 202 = 180 (subtract 202 on both sides)
2x = -22 (divide by 2 on both sides)
x = -11
Hope this helps ya!!
(Combine like terms)
2x+202=180 (Subtract 202 to both sides because we want the x isolated)
2x+202=180
-202 -202
2x=-22 (Divide)
2 2
X=-11
Hope this helps :D
Can someone plz help me
Answers
Answer:
D)
Step-by-step explanation:
Hey! Could anyone solve this problem for me in a step-by-step explanation? If so, thank you! (ASAP!!)
Answers
Answer:
-8/15
that's it
Step-by-step explanation:
i cant explain
Answer:
option d
Step-by-step explanation:
[tex]\frac{4}{9}[/tex] ÷ [tex]-\frac{5}{6}[/tex]
take reciprocal of -5/6, [when you take reciprocal, the '÷' sign will become '×' sign]
⇒ [tex]\frac{4}{9}[/tex] × [tex]-\frac{6}{5}[/tex]
⇒ 4 × -6 / 9 × 5
⇒ [tex]-\frac{24}{45}[/tex]
⇒ [tex]-\frac{8}{15}[/tex]
therefore, option d is the correct option
A furniture store had a chair that costs $42. The owner put it on sale for 20% off. How much is the chair now?
Answers
Answer:
$33.60
Step-by-step explanation:
Answer:
33.60
Step-by-step explanation:
20% of 42 is 8.40. Subtract that from 42 to get your answer.
SUPER EASY HELP ME
Which of the following relations is a function?
A.
(2, 0), (-5, 3), (5, 1), (-5, 5)
B.
(2, 4), (-5, 6), (2, 3), (-6, 2)
C.
(5, 1), (-5, 4), (2, 1), (5, 2)
D.
(2, 4), (-5, 2), (5, 1), (-6, 2)
Answers
Answer:
D
Step-by-step explanation:
it is a function because the x-value does not repeat
2. through: (8,5), perpendicular to y=-1/2x +4
Answers
Y = 2x + b
Plug in point (8,5)
5 = 2(8) + b
5 = 16 + b
b = -11
Equation: y= 2x - 11
5x - ( 4x - 1) = 2
a. 1/9
b. -1
c. - 1/9
d. 1
Answers
Answer:
D. 1
Step-by-step explanation:
Distribute the -1
5x - 4x +1 = 2
1x = 1
x=1
i need help please asap
Answers
What is the measure of angle ABC?
A. 130
B. 40°
C. 85°
D. 170
Answers
Answer:
what is the shape and can I have a pic of what it looks like
C.85 espero ter ajudado
Factor completely...I need help with my algebra 2 assignment!
Answers
2.) (3x-4) (x^2 +3)
3.) 2x(2x-5) (x-4)
4.) (4x+3) (2x^2 +1)
5.) (4x-5) (16x^2 + 20x+25)
6.) (x+2) (x-2) (x^2+3)
7.) 2x^2(2x+3) (4x^2-6x+9)
8.). (4x-1) (x+1) (x-1)
*Hope this helped, good luck :-)
if 2x + 5y = -5 what is x if y = -5
HELP ASAP
Answers
Answer:
x=10
Step-by-step explanation:
first substitute y with the value (-5)
2x+5(-5)=-5 which is simplified to 2x+-25=-5
add 25 to -5 which gives you 2x=20
then divide 20 by 2 which makes x=10
PLEASE HELP WILL MAKE BRAINLIST
What is the solution to 4|x − 3| + 1 = 1?
A.
x = 3
B.
x = 3 or x = 4
C.
x = 3 or x = 6
D.
No solutions exist.
Answers
Answer:
X=3
Step-by-step explanation:
4x-12+1=1
4x=1-1+12
4x=12
x=12/4
x=3
Answer:
x=3
Step-by-step explanation:
help much? brainliest if i can
Answers
Answer:
Option 1:[tex]y = -\frac{2}{3}x+5[/tex] is the correct answer.
Step-by-step explanation:
The slope-intercept form of a line is given as:
[tex]y = mx+b[/tex]
Here m is the slope and b is the y-intercept
m is calculated using the formula
[tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]
Given points are:
[tex](x_1,y_1) = (-3,7)\\(x_2,y_2) = (9,-1)[/tex]
Putting the values in the formula
[tex]m = \frac{-1-7}{9+3}\\= \frac{-8}{12}\\=\frac{-2}{3}[/tex]
Putting m=-2/3 in equation
[tex]y= -\frac{2}{3}x+b[/tex]
Putting (9,-1) in equation
[tex]-1 = -\frac{2}{3}(9)+b\\-1 = -6+b\\b = -1+6\\b = 5[/tex]
Putting the value of b
[tex]y = -\frac{2}{3}x+5[/tex]
Hence,
Option 1:[tex]y = -\frac{2}{3}x+5[/tex] is the correct answer.
Three hundred yards of fencing is being used to fence in a rectangular garden. The area of the garden is modeled by a quadratic function of the rectangle’s width, A(w). What does the second coordinate of the vertex of the quadratic function. A(w), represent?
Answers
i uhm eeeeeeeeeeeeeeeeeeeeeeeeee
Consider that x = 5 and y = 7. Which statement is true about x + y? A) The sum of x and y is a rational number. B) The sum of x and y is an imaginary number. C) The sum of x and y is an irrational number. D) The sum of x and y is neither rational nor irrational.
Answers
Answer:
The answer is 12
Step-by-step explanation:
because 7 plus 5 is 12
:( can sum1 please help me I got 15min till its due and well my grades are due in 5 and I'm really suck at this question
Answers
Answer:
14 is the answer your welcome
Richard spent $30 at a store. He spent $14 on a book and bought some CD's at $4 each. How
many CD's did Richard buy at the store? Write an equation to represent the problem, then
solve.
Answers
Answer:
4
Step-by-step explanation:
30 minus 14 = 16 and 16 divided by 4 is 4. so the answer is 4
could someone help me with this ? i need to find m
Answers
the three angles of a triangle always add up to 180 degrees.
So, add the three angles together!
2x - 12 + 2x + 17 + 9x - 7 = 180
Group the similar numbers together.
13x -2 = 180
13x = 182
x = 14
Plug x in to 2x + 17
14*2 + 17 = 45
mX = 45 degrees
Answer:
m∠X = 45°
Step-by-step explanation:
All angles in a triangle add up to 180°
2x - 12 + 2x + 17 + 9x - 7 = 180
13x = 180 - 17 + 12 + 7
13x = 182
x = 14°
m∠X = 2x + 17
sub x = 14° into m∠X
2(14) + 17
m∠X = 45°
Please help I need an explanation i will give brainliest :)
Answers
y=10
If you divide 8 by 2 you'll get 4. Now do the opposite of division. multiply5 by 2 you'll get 10
A building has 63 apartments and 70 bathrooms. What is the ratio of apartments to bathrooms in the building?
Answers
Answer:
63:70
Step-by-step explanation:
A survey of 100 parks showed the following.
37 had camping.
28 had camping and hiking trails.
69 had hiking trails. 33 had hiking trails and biking paths.
58 had biking paths. 15 had hiking trails, biking paths and camping.
22 had camping and biking paths.
Answers
Answer:
A) 2
B) 71
c) 4
D)42
Step-by-step explanation:
Draw the Venn diagram starting from the intersection of all
Solve the linear equation
3.4 + 2(9.7 – 4.8x) = 61.2
Answers
help me :<<<<<<<<<<<<_
Answers
Decimal form : 11.25
mixed number form : 11 1/4
Approximate the value of the square root of 110 to the nearest hundredth
Answers
Answer:
10.4900
Step-by-step explanation:
pls make a brainliest
Express each ratio as a fraction in the simplest form
12 blue cars out of 48 cars
Answers
The ratio is 12/48 and yo I just have to simplify it
Can you pls mark brainleist
im high & kinda slow help out .
Answers
Answer:
In google
Step-by-step explanation:
Is all
please help. its on ratio
Answers
Answer:
You: 6
Friend: 12, 16
Your friend sold 16 tickets
Step-by-step explanation:
u-U sincerely~ MiHa
[EASY] What's the slope of the line?? PLEASE HELP
Answers
Answer:
-3/1
Step-by-step explanation:
you go down 3, and to the right one. slope is rise over run so -3 over 1