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svetoff [14.1K]
2 years ago
11

Find the value of X.

Mathematics
1 answer:
VashaNatasha [74]2 years ago
6 0

Answer:

19) 28°

20) 60°

21) 17°

Step-by-step explanation:

19)

Supplementary angles:

(x + 12)º + 140º = 180º

x + 12 + 140 = 180

x = 180 - 140 - 12

x = 28º

20)

Angles at a point:

(- 24 + x)° + 24° + 300° = 360°

- 24 + x + 24 + 300 = 360

x = 360 - 300

x = 60°

21)

Vertically opposite angles:

(1 + 3x)° = 52°

1 + 3x = 52

3x = 52 - 1

3x = 51

x = 17°

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Answer:is 3

Step-by-step explanation:6 divided by 2

3 0
3 years ago
Writing in Slope-Intercept Form, 4 Ways <br><br> (3, 2) &amp; (-3, -4)
andre [41]

Answer:

y = x +1

Step-by-step explanation:

y= mx + b

where m is the slope and b is the y-intercept

m = (y2-y1)/ (x2-x1) = 2+4 / 3+3 = 6/6 = 1

from the point -slope equation we have

y-y1 = m* (x-x1)

y-3 = 1* ( x-2)

y= x -2+3

y= x +1

so the slope m=1 and the y-intercept b=1

3 0
3 years ago
A rectangular prism is 4.1 feet long, 4.3 feet wide and 14 feet high. what is the volume of the rectangular prism
Marizza181 [45]

Answer:

246.82 cubic feet.

Step-by-step explanation:

The volume of a rectangular prism is length*width*height. Solving, 4.1*4.3*14=246.82 cubic feet.

8 0
2 years ago
The scale on a drawing is 1 cm = 4.5 meters. If the length of the drawing is 6.2 cm, what is the actual length in meters?
Nataly [62]

Answer:

I think the awnser is 27.9

Step-by-step explanation:

4.5*6.2=27.9

7 0
2 years ago
Find an integer value of b that makes x^2 + bx - 81 factorable.
Kaylis [27]

Answer:

b = 80

Step-by-step explanation:

Given that,

x² + bx - 81

To find,

value of b

What is factorable?

A polynomial equation with highest degree 2 is if factorable when

  1. we can find two terms which when multiples = -81x²,   <em> ( x² * - 81 = -81x² ) </em>
  2. and when add = bx

possible factors:

  1. -1x * 81x = -81x²   (Accepted)
  2. 1x * -81x= -81x²    (rejected)
  3. 9x * -9x = -81x²    (rejected)
  4. -9x * 9x = -81x²    (rejected)

Only when -1x , 81x is added -1x + 81x = 80x

so, bx = 80x

     b   = 80

<h3>The equation is x² + 80x - 81</h3>

5 0
2 years ago
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