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
Otrada [13]
3 years ago
13

How would I figure this out?? pls explain.

Mathematics
1 answer:
NeX [460]3 years ago
8 0

Answer:

D

Step-by-step explanation:

The diagonals of a rhombus bisect the angles, thus

∠ ABC = ∠ CBD = 5x - 18 and

∠ BAC = ∠ DAC = x

The diagonals are perpendicular bisectors of each other, thus

the angles round the intersection of the diagonals = 90°

Consider the triangle on the left of the rhombus, then

5x - 18 + x + 90 = 180 ( sum of angles in a triangle )

6x + 72 = 180 ( subtract 72 from both sides )

6x = 108 ( divide both sides by 6 )

x = 18 → D

You might be interested in
−2x−(−5−4x)=−5(2x−7)
hoa [83]

Answer:

<em>x = 2.5</em>

Step-by-step explanation:

- 2x - ( - 5 - 4x ) =  - 5 ( 2x - 7 )

- 2x + 5 + 4x = - 10x + 35

- 2x + 5 + 4x = - 10x + 35

- 2x + 4x + 10x = 35 - 5

12x = 30

<em>x = </em>\frac{5}{2}<em> = 2.5</em>

Check the answer:

<em>L.H.S.</em> = - 2(2.5) - [ - 5 - 4(2.5) ] = <em>10</em>

<em>R.H.S.</em> = - 5 [ 2(2.5) - 7 ] = <em>10</em>

6 0
2 years ago
4. One printing machine printed 1920 books in 40 hours this week. A
Alecsey [184]
2880 books

Divide 1920 by 40
Then multiply the number by 2
You will get 96
Then multiply it by 30
6 0
2 years ago
How do you write a improper fraction a mixed number if it's a negative
Nookie1986 [14]
You simply do it the same way as a positive number, just with a negative sign in front :)
8 0
3 years ago
The measure of the angle
miv72 [106K]
First, we know this diagram consists of two horizontal lines cut by a transversal line. Therefore, we know that the given angle that measures 113° and the angle we want to find are alternate interior angles. Since all alternate interior angles are equal, we know the unknown angle must also be 113°.

I hope this helps.
5 0
3 years ago
Read 2 more answers
BRIANLIESTT!!!!GIVING
balu736 [363]

Answer:

A.

Step-by-step explanation:

x - 9 = 0

  + 9 + 9

---------------

x = 9

6 0
3 years ago
Read 2 more answers
Other questions:
  • Your cell phone company charges you $15 a month plus$0.05 for every minute or part of a minute that you use. You want your month
    15·2 answers
  • Which expression concerts 100 inches per minute to feet per minute
    11·1 answer
  • Write a function rule relating x and y. x=1,2,3 y=1,8,27.
    12·1 answer
  • Can someone please solve this. I got 81
    15·1 answer
  • 1.99 ÷ 3 =
    12·2 answers
  • What is the least number which is to be added or subtracted to 651201 to get a perfect square?
    12·1 answer
  • 7. Find the area of Q in terms of .
    9·1 answer
  • The side length of a square with an area of 49
    10·1 answer
  • Which of the following equations shows how substitution can be used to solve
    5·1 answer
  • !!!6TH GRADE!!! MATH DUE IN !% MIN ***50 POINTS***
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!