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marin [14]
3 years ago
12

19. Find the measure of angle ABC.

Mathematics
1 answer:
aliya0001 [1]3 years ago
8 0

Answer:

72

Step-by-step explanation:

6x+6x+8x=180 (∠ sum of Δ)

20x=180

x=9

∠ABC=8(9)

         =72

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Given: 1 and 2 are supplements, and 3 and 2 are supplements.
Ronch [10]

The <em><u>correct answers</u></em> are:

Supplementary; ∠2 and ∠3; substitution; 2.

Explanation:

Supplementary angles are angles whose measures sum to 180°.  Thus this is the first answer.  

Since we are told that ∠2 and ∠3 are supplementary, their measures sum to 180° and they are the second answer.

We know that m∠1 + m∠2 = 180° and m∠2 + m∠3 = 180°.  We can substitute "m∠2 + m∠3" for 180° in the first equation; this is the substitution property.

To isolate m∠1 on the right, we will subtract m∠2 from each side, and get that m∠1 = m∠3 and the angles are congruent.


5 0
3 years ago
Read 2 more answers
what happens to the line if you change the slope a)if y = 2x + 3 and change it to y = 3x + 3 b)if you change the 2 to -2
Sidana [21]
I am pretty shur answer is a
8 0
3 years ago
Find ​(a) the slope of the curve at the given point​ p, and ​(b) an equation of the tangent line at p. y=−2−9x2​; ​p(2​,−38​)
Neporo4naja [7]

Answer:

a) -36

b) y = -36x +34

Step-by-step explanation:

a) The slope is found using the derivative of the function.

  f'(x) = dy/dx = 0 -9(2x) = -18x

Then at x=2, the slope is ...

  f'(2) = -18·2 = -36

___

b) The point-slope form of the equation can be written as ...

  y = -36(x -2) -38

Simplifying to slope-intercept form, we get ...

  y = -36x +34

6 0
3 years ago
This . 9th and 10 pleasee solve thesee ?
kykrilka [37]
9 is 9600 cause if you divide 48 by 5 you get 9.6 then times 9.6 times 1000 you get 9600
i cant solve number 10 its really blurry and hard to see
5 0
3 years ago
How many feet are in 508 cm ? ​
Alenkasestr [34]

Answer:

16.7

Step-by-step explanation:

30.48cm = 1 foot

508/30.48= 16.6667

round up to 16.7

4 0
3 years ago
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