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
makvit [3.9K]
2 years ago
14

Can the measurement from △DEF be determined using only the Law of Cosines? State whether each measurement can be determined usin

g only the Law of Cosines by answering “yes” or “no”.
m∠D =


m∠E =


DE =

Mathematics
1 answer:
quester [9]2 years ago
7 0

9514 1404 393

Answer:

  • ∠D - no
  • ∠E - no
  • DE - yes

Step-by-step explanation:

With a single application of the Law of Cosines, you can only find one of an unknown side or an unknown angle. The other three elements in the 4-variable equation must be specified.

However, a single application of the LoC can be used to find DE. Then, knowing the three sides, either of the unknown angles can be found from an additional application of the LoC.

So, the answer is "it depends." It is yes to all if finding DE first is allowed. It is "no" to the angles if they must be found without finding DE first.

You might be interested in
25=35x <br> What does x equal?
jeka57 [31]

Answer:

\frac{25}{35}, which simplifies into \frac{5}{7}

Step-by-step explanation:

You divide both sides by 35 and get \frac{25}{35}

5 0
2 years ago
1) Give 5 examples of a difference of two perfect squares
Katyanochek1 [597]

ᴀɴsᴡᴇʀ:

<u>1.Example, x²-25 can be factored as (x+5)(x-5).</u>

<u> </u>

<u>2.This method is based on the pattern (a+b)(a-b)=a²-b², which can be verified by expanding the parentheses in (a+b)(a-b).</u>

<u> </u>

<u>3.When an expression can be viewed as the difference of two perfect squares, i.e. a²-b², then we can factor it as (a+b)(a-b). For example, x²-25 can be factored as (x+5)(x-5).</u>

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs!

☞︎︎︎ᴄᴀʀʀʏ ᴏɴ ʟᴇᴀʀɴɪɴɢ☜︎︎︎

8 0
2 years ago
What is 77.2-43.778?<br>what is 2.072 divided by 5.6
Shkiper50 [21]

2.072/5.6= 0.37

77.2- 43.778= 33.422

Hope this helps!

~LENA~


8 0
3 years ago
PLEASE ANSWER ASAP! YOUR ANSWER MUST INCLUDE AN EXPLANATION IN ORDER TO RECEIVE 10 POINTS AND THE BRAINLIEST! THANKS!!!
7nadin3 [17]
The equation formula of the circle is (x-h)^2 + (y-k)^2 = r^2
where (h,k) the point of the  center of the circle
and (r) is the radius of the circle 
so if the center of the circle = (-2,-4)  
by subs. in the formula we get (x-(-2))^2 + (y-(-4))^2 = r^2 
then the equation will be (x+2)^2 + (y+4)^2 = r^2 
now we want to define the radius of the circle r
since point (3,8) lay on the circle so we can 
then subs. in the equation to get the radius 
(x+2)^2 +(y+4)^2 = r^2 
(3+2)^2 +(8+4)^2 = r^2 
25 + 144 = r^2 
r^2 = 169 
r= 13 
the radius of the circle is 13 
so by subs in the equation we get 
(x+2)^2 + (y+4)^2 = 169 
so it is the first answer in the choices 
8 0
3 years ago
Which equation below represents the inverse function B(a) , which takes the trapezoid's area as input and returns as output the
8090 [49]
A(b)  = 12(b + 9) / 2
12(b + 9) = 2 A(b)
b + 9 = 2 A(b) / 12  = A(b) / 6
b = A(b)
      ----- - 9
        6

B(a)   =  a              
             --  -  9
              6


It's C
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which equation has roots of 3plus or minus sqare rt 2?
    6·1 answer
  • Which of the following would correctly fill in the blank on the following statement? 1.7 x 10__ = 0.00017
    12·2 answers
  • Tea costs $4.48 for 8 ounces. What is the cost per one ounce?
    10·2 answers
  • Roger and Natalie travel in similar cars. Roger's car drives the two miles to school in 7.5 minutes. Natalie drives the same dis
    8·2 answers
  • Solve for x: 4(x+5)=3(x-2)-2(x+2)
    7·1 answer
  • What is 4x(2x-3)-5(3x-4) in standard form
    11·1 answer
  • If "u" varies directly with "v", and u = 6 when v = -7, what is "u" when v =4?
    15·2 answers
  • If you need a better picture please let me k ow
    6·1 answer
  • -5x=-6<br> what is the value of x?
    15·2 answers
  • Simplify the following 35÷32<br> plz help me out!!​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!