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il63 [147K]
3 years ago
7

Find the value of x.

Mathematics
2 answers:
PIT_PIT [208]3 years ago
7 0

Answer:

x = 55

Step-by-step explanation:

We know that triangles add up to 180 degrees, so let's start with that. Keep in mind that "y" will be the third degree of the triangle.

21+34+y = 180

55+y = 180

y = 125

Okay, now we know that the third degree is 125. Also, the line that 125 and x are on is a straight line. All straight lines are 180 degrees. Subtract 180 and 125 to get your answer.

180-125 = 55

So your final answer will be x=55, hope this helped!

Nimfa-mama [501]3 years ago
4 0

Answer:

x=55

Step-by-step explanation:

you have to add the three angles to get 180 first. 180- 21-34=125.

then take the missing angle inside the triangle (125) and subtract by 180.

180-125=55

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The value of n is a distance of 1.5 units from -2 on a number line.
valina [46]

Answer:

-3.5 and -0.5 would be the answers

4 0
3 years ago
Which expression gives the prime<br> factorization of 80?<br> I need help please..
Alja [10]
The correct answer is actually choice D.
8 0
3 years ago
Explain how you got your answer please :
liraira [26]
X is the number of hours studied, so replace x with 3 in the equation:

y = 6.8(3) + 60
y = 20.4 + 60
y = 80.4

Round down to 80.

The answer would be A.
3 0
3 years ago
I WILL MARK BRAINLIEST PLEASE HELP FIND ANGLE DEB <br><br> ITS DUE AT 12 PLEASE HELP PLEASE
Gemiola [76]

Answer:

\boxed {\boxed {\sf \angle DEB = 111 \textdegree}}

Step-by-step explanation:

We want to find angle DEB. We know AB is perpendicular to AC, CD is congruent to CE and angle B is 48 degrees.

ABC is a triangle. The angles in a triangle must add up to 180 degrees. Therefore:

  • ∠A+∠B+∠C= 180°

We know two angles: ∠B= 48° and ∠A= 90° (the little square denotes a right angle).

  • 90°+48°+ ∠C= 180°                               <em>Substitute values in.</em>
  • 138°+ ∠C =180°                                      <em>Add</em>  
  • 138°-138° ∠C= 180°-138°                       <em>Subtract 138 from both sides.</em>        
  • ∠C= 42°    

Note that angle C is part of another triangle. It is isosceles because the two legs (CD and CE) are congruent. Therefore, the two base angles (E and D) are congruent.

  • ∠C+∠D+∠E= 180°
  • ∠C+ 2∠D= 180°                             <em>Angles D and E are congruent</em>
  • 42°+ 2∠D= 180°                             <em>Substitute 42 in for angle C</em>
  • 42°-42° +2∠D= 180°-42°               <em>Subtract 42 from both sides.</em>
  • 2∠D=  138°
  • 2∠D/2= 138°/2                              <em>Divide both sides by 2.</em>
  • ∠D= 69°

∠D and ∠E equal 69 degrees.

Angle CED (∠E)  and DEB are on a straight line together. Therefore, they are supplementary and equal 180 degrees.

  • ∠CED+ ∠DEB= 180
  • 69° +∠DEB= 180°                    <em>Substitute 69 for angle CED</em>
  • 69°-69° +∠DEB= 180°-69°      <em>Subtract 69 from both sides</em>
  • ∠DEB=111°

Angle DEB is equal to <u>111 degrees</u>

8 0
3 years ago
How do I find n for this problem ?
Anna007 [38]
Tan(x) = opp/adj

tan(30°) = 9/n

n x √3/3 = 9

3n x √3 = 27

3√3n = 27

√3n = 9

n = 9/√3


4 0
3 years ago
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