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
IrinaK [193]
3 years ago
7

What is the length of DE?

Mathematics
1 answer:
g100num [7]3 years ago
6 0

Answer:

Step-by-step explanation:

Yes

Theorem 8.3: If two angles are complementary to the same angle, then these two angles are congruent.

∠A and ∠B are complementary, and ∠C and ∠B are complementary.

Given: ∠A and ∠B are complementary, and ∠C and ∠B are complementary.

Prove: ∠A ~= ∠C.

 Statements Reasons

1. ∠A and ∠B are complementary, and ∠C and ∠B are complementary. Given

2. m∠A + m∠B = 90º , m∠C + m∠B = 90º Definition of complementary

3. m∠A = 90 º - m∠B, m∠C = 90º - m∠B Subtraction property of equality

4. m∠A = m∠C Substitution (step 3)

5. ∠A ~= ∠C Definition of ~=

You might be interested in
BRAINLIEST ANSWER TO FIRST ANSWERER!!
Natalija [7]

Answer:

13 cms

Step-by-step explanation:

By Pythagoras:-

x^2 = 12^2 + 5^2

x^2 = 144 + 25

x^2 = 169

x  = √169

= 13

5 0
3 years ago
the area of the curved surface of a solid cylinder is equal to 2/3 of the total area of the same cylinder . If the total surface
zheka24 [161]

Answer:

Sa = 36 circumference per meter square

This answer is wrong sorry

Will you my friend

7 0
2 years ago
Jasmine, Abby, and Amber had $865 altogether. Jasmine spent 2/5 of her money. Abby spent $40, and Amber spent twice as much as J
erastovalidia [21]

Answer:

288.333333333

Step-by-step explanation:

Me, personally am not great with math, but I can say you have to take $865 then take away $40 then decide how much they get apiece. to do that you must divide 865 from 3. afterwards you should take that number away from 865 remember that you are also taking away 40 then you have your final answer

6 0
3 years ago
Read 2 more answers
Estimate the measure of the clockwise angle formed by the minute hand and the second hand, then classify the angle. A. 54°; acut
Harlamova29_29 [7]
I would go with b or a or d but not c 
8 0
3 years ago
Read 2 more answers
Solve by substitution x-y=-11 y+7=-2x
Bess [88]

x - y = - 11   .............( 1 )

y + 7 = - 2x ...............( 2 )

from equation ( 1 )

x - y = - 11

x   = -11 + y  ...........( 3)      

putting x in equation  ( 2 )

y + 7 = - 2 x  

y  + 7 = -2 ( -11 + y )             y + 7 = 22 - 2 y                       y + 2 y =22 - 7            

3 y = 15                  y = 15 / 3

putting value of y in equation 3

x   = -11+ ( 13 /5 )                       x = -33 /3 + 15 / 3         ( l.c.m)

x  = -17 / 5                      

check      

x = -11 + y

- 17 / 5 = -11 + 13 / 5

-17 /5   = -17 / 5

4 0
3 years ago
Other questions:
  • What's one seventh times seven ninths
    12·2 answers
  • Alberto walks 0.8 miles to school. It took him 6 minutes to walk the first 0.3 miles. Atthat rate how long would the entire trip
    11·1 answer
  • ¿Cuánto es $ 3.57 redondeado al dólar más cercano?
    7·1 answer
  • What is the product of -3 and 5?
    15·1 answer
  • Write <br> 7 <br> 2<br> 5<br> as an improper fraction.
    11·2 answers
  • (-7) + b = (-11) PLEASE HELP
    6·1 answer
  • The weather report says there is a 91% chance it will rain tomorrow. Should you get ready to use an umbrella?
    6·2 answers
  • Simplify the expression
    13·2 answers
  • 15.6 times a number x as an expression
    9·1 answer
  • Find the intercepts and graph each line.<br><br> a.) x – 4y =− 4<br> b.) 2x + 5y =-10
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!