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
oksano4ka [1.4K]
2 years ago
14

The quadrilateral ABCD is a parallelogram. The value of a is?

Mathematics
1 answer:
Nataly_w [17]2 years ago
6 0

Step-by-step explanation:

in a parallelogram, opposite angles are equal..

so C is 4a + 22. and B is 6a - 12.

sum of interior angles in a quadrilateral = 360

4a + 22. + 6a - 12. + 4a + 22. + 6a - 12 = 360

20a + 20 = 360

20a = 340

a = 17

sum of angles on a straight line = 180

B + x = 180

6 ( 17) - 12 + x = 180

102 + × = 180

× = 180 - 102

× = 78

You might be interested in
Lily is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pa
Nesterboy [21]

Answer:

<h2>The slope is 100</h2>

Step-by-step explanation:

Given that the equation that represents the total cost is given as

C=900+100p--------1

this equation is the same as the equation of a straight line, and we can deduce from it when we compare it the straight line equation

the equation of a line is given as

y=mx+c------2

comparing equation 1 and 2 we have the slope as

m=100

In the context of this problem m=100 means that the cost of producing a phone per material and labour cost is $100

7 0
3 years ago
What is the sum of the arithmetic series: s10 = -20, d = 4, a1 =? ​
Otrada [13]
<h2>Step-by-step explanation:</h2><h3>\green\star Given</h3>

\blue\stars10 = -20

\blue\starn = 10

\blue\star an = -20

\green\star solution

\green\stars10 = n\2 [a+(n-1)d]

\green\star-20 = 10a2[a+(10-1)4]

\green\star-4 = a +36

\green\stara1 = -40

\small\boxed{a = -40}

Hope it helps.

Hope it helps

8 0
3 years ago
Read 2 more answers
On a coordinate grid, both point (−4, −1) and (2, 6) point are reflected across the y-axis. What are the coordinates of the refl
vichka [17]
The reflected points are (4, -1) and (-2, 6).
4 0
3 years ago
Which word is closest in meaning to defiance?
Lina20 [59]

Answer:

4. refusal

Step-by-step explanation:

since defiance means not willing to cooperate

3 0
2 years ago
Read 2 more answers
HELP ME I WILL MARK BRAINLIEST
Westkost [7]

Answer:

The answer is 1/15

I hope it helps

7 0
3 years ago
Other questions:
  • Factor completely. n ^4 - 1
    11·2 answers
  • 12. The geographic grid apportions the globe into hemispheres of 180 lines of longitude. Based on your knowledge of basic geomet
    5·1 answer
  • Which of the following are congrunce transformation
    5·1 answer
  • Please help ASAP 25 pts + brainliest to right/best answer
    6·1 answer
  • Help me out please :(((
    11·1 answer
  • How do I sovle this Please help
    11·1 answer
  • A furniture company is working on a model of a table that has the scale of 3 in : 2 ft. the length of the model is 6 1/2
    8·1 answer
  • There are 5 puppies in a room. One puppy is 15 weeks, another is 9 weeks, another is 4 weeks, and another is 10 weeks. If the av
    6·1 answer
  • Can y’all help me on question 6?!
    14·2 answers
  • Translate and solve using proportions what percent of 120 is15
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!