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
nydimaria [60]
3 years ago
9

. If a = 120°, find the measure of angles b, c and d. Explain your reasoning.

Mathematics
1 answer:
Alchen [17]3 years ago
8 0
∡b is a vertical angle to ∡a and therefore a twin, and we know that ∡a = 120°, thus since ∡b = ∡a, ∡b = 120° as well.

a full circle has a total of 360°, ∡d and ∡c are vertical angles, namely two angles across from each other at a junction, and therefore ∡d = ∡c.

∡a + ∡b is 120° + 120° thus 240°, since a circle has a total of 360°, 360 - 240 = 120, so the other two angles pick up that slack and divide it among each other evenly, 120/2 = 60, so ∡d = ∡c = 60°.
You might be interested in
Can someone help me with 1-142 all the way to 1-144??
mezya [45]

CL.1.142):

A):      

x5 ==>      4 boxes  =   3ft   <==== x5

20 boxes   =       ?  ft

20 boxes  is    15 ft. high



B):   x3  ===>   4 boxes     =    3ft.  <==== x3

   ?   boxes           =          9ft.

       12 boxes  will fit in one stack.



c):  CL.143

 Perimeter  =     15  +  29  +  9  +  11  +  6  +  18   =====>  88m

A1    =    b  *   h

(18)(15)  

270m^2


A2    =   b  *  h

(11)(9)

99

Total  Area ======>   270    +    99   ======>  369m^2









CL.1-144

1/4    +   1/4   +   1/5     =    5/20    +   5/20   +   4/20    ====>    14/20

1/4  *    5/5  =====>  5/20

1/5   *    4/4    =====>  4/20

14/20      +      ?/20       =      20/20

?      =       6  Missing    Section

6/20      ======>     3/10





CL-1.145

A):   40/100       =     4/10   ====>   2/5

0.4            ========>    40%



B):    1/6  ======>   .00000

0.16 (Repeating 6)  ======>  16.6%



C):   37.5/100     =    375/1000     =======>     3/8

0.375      =========>   37.5%





CL-1.146

ADD:   1/6   +   1/2   show all steps:

1/6   +   1/2

1/6    +    3/6

1   +   3 / 6

4/6  =======>    2/3     =======>   Decimal:   =======>   0.666667






Hope that helps!!!!                                   : )


5 0
3 years ago
7% sales tax on a 59.50 toaster
strojnjashka [21]
Alright, 7% of 59.50 is 4.17

59.50 + 4.17 is 63.67

(sorry, I misread your question last time)
6 0
3 years ago
PLEASE HELP ME!!<br> .<br> . Not sure how to do thisssss
tino4ka555 [31]

√72 = √4 * √18 = 2√18. Therefore her answer is incorrect.

√72 = √4 * √9 * √2 = 6√2.

Since √2 is approximately 1.41,

6 * 1.41 = 8.46 = 8.5 (nearest tenth).

4 0
3 years ago
Solve for angle C.<br><br><br><br><br> •
blagie [28]

Answer: 40º

Step-by-step explanation:

To find angle c, not give 2 angles at least, we must use a trigonometric function. With respect to angle c, we can see that we have the opposite and adjacent sides.

The trigonometric function that relates opposite and adjacent sides is tangent.

tan=\frac{opposite}{adjacent}

tan=\frac{21}{25}

tan^-^1=40

8 0
3 years ago
Read 2 more answers
Guys i think i might have a pis.skink
lawyer [7]

Answer:

thanks for points

that's your only question?

3 0
2 years ago
Read 2 more answers
Other questions:
  • The comeplement of 99
    12·1 answer
  • Brandon earns $6 for every shirt he sells. Which equation could Brandon use to determine the amount of money he earns (E) for an
    12·2 answers
  • Mustafa’s horse ate 6,400 pounds of hay last year. How could Mustafa determine the number of tons of hay his horse ate last year
    6·1 answer
  • Show work for 694 divided by 3
    6·1 answer
  • MZJ and m M are base angles of isosceles trapezoid JKLM. If mZJ = 18x + 8 and m_M=11x + 15 find m2K.
    12·1 answer
  • Please answer i will give you brailest!!!!!!!!1
    9·2 answers
  • PLSS PLSS HELP ME I REALLY DONT UNDERSTAND THIS
    14·1 answer
  • I need help right now I’m in my class plz help
    9·2 answers
  • Pls i cannot fail this !
    15·2 answers
  • Evaluate the expression 2(3-5)^3+4(-4+7)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!