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
White raven [17]
2 years ago
5

Angle Sum Theorem what is y

Mathematics
2 answers:
Mamont248 [21]2 years ago
6 0

9514 1404 393

Answer:

  y = 90°

Step-by-step explanation:

The angle sum theorem tells you the sum of angles in a triangle is 180°. You also know that the sum of the angles of a linear pair is 180°.

Let z represent the measure of the unmarked interior angle at the the lower left of the triangle shown. Then we have ...

  110° + z = 180° . . . . angles of a linear pair are supplementary

  z +2x +70° = 180° . . . Angle Sum theorem

Then we can write ...

  110° +z = z +2x +70°

  110° = 2x +70° . . . . . the exterior angle is equal to the sum of the remote interior angles.

  40° = 2x . . . . . . . . . subtract 70°

  20° = x

Similarly, we have ...

  110° = x + y . . . . . . . exterior angle = sum of remote interior angles

  110° -20° = y = 90° . . . . subtract x=20°

_____

<em>Additional comment</em>

You may be able to get there a lot faster by recognizing z = 180° -110° = 70°, hence the triangle is isosceles. The angle bisector creating angles x is then also an altitude, hence y = 90°.

zaharov [31]2 years ago
5 0

Answer:

y = 90°

Step-by-step explanation:

The angle sum theorem tells you the sum of angles in a triangle is 180°. You also know that the sum of the angles of a linear pair is 180°.

Let z represent the measure of the unmarked interior angle at the the lower left of the triangle shown. Then we have ...

110° + z = 180°. are supplementary angles of a linear pair

z +2x +70° = 180°...Angle Sum theorem

Then we can write ...

110° +z = z +2x +70°

110° 2x +70°..... the exterior angle is equal to the sum of the remote interior angles.

40° = 2x......... subtract 70°

20° = x

Similarly, we have ...

110° = x+y....... exterior angle = sum of remote interior angles

40° = 2x.

20° = x

Similarly, we have ...

110° = x + y ....... exterior angle = sum of remote interior angles

110° -20° y = 90°. .... subtract x=20°

Additional comment

You may be able to get there a lot faster by recognizing z = 180° -110° = 70°, hence the triangle is isosceles. The angle bisector creating angles x is then also an altitude, hence y = 90°.

You might be interested in
125% of x is 60. What is x
Lunna [17]

Answer:

Step-by-step explanation:

1.put your percent over a 100 so

125%/100 then put 60 over x

2.then cross multiply 100x60=6000

3.then divide 6000 by 125 which is percent

4.your answer is-48

8 0
3 years ago
Read 2 more answers
The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2. How does the amount of fabric needed for Robs costum
exis [7]

The amount of fabric needed for Jimmy's costume is not stated, we can only determine the amount needed for Rob's costume, which makes it impossible to compare the amounts needed for both of their costumes. If this omission was an error, then you can find the difference between these amounts if the amount needed for Jimmy's costume is stated explicitly.

Step-by-step explanation:

The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2

Assuming 1 3/4 is a mixed fraction.

= (7/8 + 1/2 + 7/4) ÷ 2

= (7 + 4 + 2) ÷ (8 × 2)

= 13/16 yards

Suppose 2 yards of fabric is needed for Jimmy's costume, then comparing with Rob's yards, we see that Jimmy's costume requires (2 - 13/16 = 19/16) more yards than Rob's costume.

8 0
3 years ago
Maya is cleaning out her closet and is shocked when she realizes that she has 55 shirts. She decides to donate 40% of them. ​
ipn [44]

Maya is cleaning out her closet and is shocked when she realizes that she has 55 shirts. She decides to donate 40% of them. How many more shirts does she have for her ?

Answer:

The number of T-shirt that Maya will have after donating 40% is 22 shirts

Explanation:

Given:( as per the above data provided)

Total number of T-shirts = 55

Percentage of T-shirts she wish to donate = 40%

To find:

Remaining number of T-shirt left after donating?

Formula to be used:

Remaining T shirt = (Total number of T-shirt /100) X The Percentage of T-shirt she wish to donate

Steps:

Substituting all the above provided values in the formula we get,

              = (55/100)*40

              = 22 shirts.

Thus the number of T-shirts left with her is 22.

3 0
3 years ago
Mai travels 90 miles in 2 hours by boat. At this rate,how far does Mai go in 3 hours?
Marysya12 [62]

Answer:

135 miles in 3 hours

Step-by-step explanation:

5 0
3 years ago
I need help and I dont get this at all
mel-nik [20]

Answer:

The sides form a <u>right triangle</u>

Step-by-step explanation:

\sqrt(130)km = 11.4 km

4 0
3 years ago
Other questions:
  • 3a+2ab-6a+2b-ab and all the steps
    14·1 answer
  • An employee does not earn sales commission for the first $1000 of sales, but earns 15% sales commission on all sales made therea
    8·2 answers
  • What can be concluded about a cylinder and a cone with the same height and radius measures? Check all that apply.
    11·2 answers
  • A flower show has an inventory of 60 tulips and 100 roses. If T represents tulips and R represents roses, which of the following
    7·1 answer
  • Mindy and Troy combined 9 pieces of the wedding cake .Mindy ate three pieces of cake and Troy had 1/4 of the total cake
    14·2 answers
  • draw a triangle using the roots of _3x+5x+21=y, the associated vertex of the equation, and the x-axis, to format the sides of th
    10·1 answer
  • 1. If the flower garden has an area of 27 ft?, what are the dimensions of the garden?
    5·1 answer
  • 5 is one-fourth of a number c.
    13·2 answers
  • PLEASE HELP THIS IS DUE TODAYYYY
    14·1 answer
  • Jorge is at the dollar store buying balloons for a birthday party. For every 5 balloons he buys, he pays $6.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!