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
Step2247 [10]
3 years ago
8

Help me find the missing angles

Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

  b) 105°

  d) 130°

Step-by-step explanation:

An external angle has the same measure as the sum of the remote internal angles.

b) ? = 25° +80° = 105°

d) ? = 35° +95° = 130°

_____

This should be fairly obvious if you consider that the adjacent internal angle together with the external angle totals 180°, and the adjacent internal angle together with the other two internal angles totals 180°.

If the two "remote" angles are A and B, and the adjacent internal angle is C, then we have in symbols ...

  A + B + C = 180° = ? + C

If we subtract C, then we find ...

  A + B = ? . . . . . . the fact we used above

You might be interested in
When the sum of an unknown number and twenty two is divided by the unknown number, the quotient is 12. What is the unknown numbe
Gnom [1K]
You would basically work backwards and do inverse operations




12
24*
__
288



288/24= 12
8 0
3 years ago
Andrea rode her bike 3 23rds miles on saterday and 4 56 miles on sunday. how far did she bike in all​
Tpy6a [65]

Answer:

8 1/2 miles

Step-by-step explanation:

Please use " ' " to indicate fractions:

Andrea rode her bike 3 2/3 miles on saturday and 4 5/6 miles on sunday.

Add together 3 2/3 and 4 5/6.  The LCD is 6, so 3 2/3 should be rewritten as 3 4/6.  Now 3 4/6 and 4 5/6 have the same denominator, 6.

 3 4/6

+4 5/6

-----------

 7  9/6.    Note that 9/6 = 1 1/2, so rewrite

7  9/6 as 8 3/6, or 8 1/2.

She biked 8 1/2 miles in all.

8 0
3 years ago
TCompute the total and annual returns on each of the following investments. Round to one decimal place. ​ Twenty years after pur
lara31 [8.8K]
The total annual returns on each of the following investments would be 65 times 11,300 and the answer you’ll get divide by 2
3 0
3 years ago
Is 16x^2-36x+25^2 a perfect Square trinomial
yulyashka [42]

Answer:

No, middle term should be 40x.

Step-by-step explanation:

16 {x}^{2}  - 2 \times 4x \times 5 +  {25}^{2}  \\   =  {(4x)}^{2}  - 40x +  {5}^{2}  \\  = (4x - 5)^{2}  \\

Hence, for the given trinomial to be a perfect square its middle term should be 40x and not 36x.

6 0
3 years ago
How do I show work for 5- (a-4) = 3 (a+2)
TEA [102]
Here is how I would show the work for this problem

5- (a-4) = 3 (a+2)
5-a+4 = 3*a+3*2
5-a+4 = 3a+6
-a+9 = 3a+6
-a+9+a = 3a+6+a
9 = 4a+6
9-6 = 4a+6-6
3 = 4a
4a = 3
4a/4 = 3/4
a = 3/4

So the solution is the fraction a = 3/4 (in decimal form 0.75)

Let me know if you have any questions or issues with any of the steps shown above. It's a lot to take in so feel free to ask about anything really. 
8 0
3 years ago
Read 2 more answers
Other questions:
  • You are a bus driver and are scheduled to depart from Terminal A at 9:18 a.M. And arrive at Terminal B at 10:03 a.M. You arrive
    7·1 answer
  • Find the circumference of a circle with a radius of 5.3 cm. Round to the nearest hundredth
    14·2 answers
  • If f(x) = -x + 8 and g(x) = x4, what is (gºf)(2)?<br> Enter the correct answer.
    14·1 answer
  • Hello, I need this to be answered asap, it's attached and I also have more questions too.
    15·1 answer
  • Please help!! Worth 28 points if you can solve it correctly and proof on paper
    5·1 answer
  • What is the volume of the rectangular prism shown below?
    14·1 answer
  • Which is a simplified form of the expression 5c – 7(2c – 4)?
    11·1 answer
  • Can someone please help with my math real quick?
    8·1 answer
  • Please help im stuck on this question! :)​
    5·1 answer
  • Suppose that 21 inches of wire costs 63 cents.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!