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
larisa86 [58]
3 years ago
11

I need help in these questions

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

All of these questions use the external angle theorem, that is

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

18

∠3 = 43° + 22° = 65°

19

∠2 + 71 = 92 ( subtract 71 from both sides )

∠2 = 21°

20

90 + ∠4 = 123 ( subtract 90 from both sides )

∠4 = 33°

21

2x - 15 + x - 5 = 148

3x - 20 = 148 ( add 20 to both sides )

3x = 168 ( divide both sides by 3 )

x = 56

Hence ∠ABC = x - 5 = 56 - 5 = 51°

22

2x + 27 + 2x - 11 = 100

4x + 16 = 100 ( subtract 16 from both sides )

4x = 84 ( divide both sides by 4 )

x = 21

Hence ∠JKL = 2x - 11 = (2 × 21) - 11 = 42 - 11 = 31°

You might be interested in
Solve for x:
elixir [45]
I’m going to say multiply both sides by a which gives you:

a^2-ab-a=2

If not give me a call
4 0
3 years ago
D’Quan’s grandmother made a quilt for his bed. The quilt is
erik [133]
4.4652 square feet. you just multiply the two
6 0
3 years ago
What is the slope of the graph of x - 2y = 8?<br> A. 0<br> B. 1/2 <br> C. 2<br> D. -1/2
BaLLatris [955]

Answer:

1/2

Step-by-step explanation:

-2y= 8-X

y= -4+X/2

y= X/2-4

recall that: y= mx+c

in the equation y= x/2+C

m=1/2

where m is your slope

7 0
2 years ago
Look at the following survey and then answer the question.
wolverine [178]

Answer:

c 32 out of 80 were surveyed

7 0
3 years ago
Please answer i need help!!!!! WILL GIVE BRAINLIEST!!!!!
sp2606 [1]

1. D. 4 x 4 x 4 x 4 x 4

2. B. 6³ (6 x 6 x 6 = 216)

3. D. (8², 100^1, 11², 5³)

4. D. Sum (There's No addition anywhere in that equation)

5. C. h (Because there's no number before the h²)

6. C. 24

7. C. Raise 9 to the 2nd power (Follow PEMDAS, after doing the parentheses, you need to do the exponents, and C. you need to the exponents)

8. A. 4xy

9. C. 18 (I followed PEMDAS, and received the answer 18)

10. B. 49

----------------------------------------------------------------------------------------------------------------

<em>I hope this helps, and Happy Holidays! :)</em>

4 0
2 years ago
Other questions:
  • (6x+21)+14 simplify expression
    11·2 answers
  • Let h(x) = 3x – 7. If h(x) = 0, find x.
    15·2 answers
  • (2 + i)(3 - i)(1 + 2i)(1 - i)(3 + i)
    15·1 answer
  • Is this graph a direct proportion? #math
    6·1 answer
  • 5. ERROR ANALYSIS Describe and correct the error in finding the sum of the number
    14·1 answer
  • To mix mortar to lay bricks,you need 2.5Kg of cement,4kg of sand and 3 liters of water.Sand is sold in 10kg bags.How much cement
    10·1 answer
  • Which equation best fits the graft data
    14·2 answers
  • To decrease an amount 37% multiply by
    7·2 answers
  • I need help ASAP PLEASE
    10·1 answer
  • G(x)=−3x−8<br><br> g( )=10<br><br> what's in the parenthesis
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!