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lubasha [3.4K]
2 years ago
9

Find the value of x​

Mathematics
2 answers:
amm18122 years ago
7 0

Answer:

82•5°

Step-by-step explanation:

28 + 68.5 + x = 180

x = 180 - 97.5

x = 82.5

Nina [5.8K]2 years ago
7 0

Here,

let the forth degree of the quadrilateral be y

Then,

90° +90° +68.5° + y =360° (all the interior angle of a quadrilateral is 360°)

or, 248.5+ y=360°

or, y = 360° - 248.5°

or, y= 111.5°

Again, the second angle of the triangle be a

Then,

a=111.5(vertically opposite angle)

Lastly,

29° + 111.5° + x = 180°(all the interior angle of a triangle is 180°)

or, 140.5° + x = 180°

or, x =180° - 140.5°

or, x=39.5°

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JulijaS [17]
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3 years ago
Solve question 10 using substitution or elimination. Show all work.
BlackZzzverrR [31]
Solid paper costs 1.75 each
Printed paper costs 2.50 each

Given:
Ben = $43.50 (12 rolls solid paper and 9 rolls of
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Joel = $51.50 (8 rolls solid paper and 15 rolls of
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Let x = solid paper
Let y= printed paper
12x + 9y = 43.50
8x + 15y = 51.50

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x= (51.50 - 15y)8

Substitute X:
12x + 9y = 43.50
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(618 - 180y)/8 + 9y = 43.50
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Y= 2.50

x = (51.50 - 15y)/8
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To check: x = 1.75; y = 2.5
12x + 9y = 43.50
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14 + 37.50 = 51.50
51.50 = 51.50

Hope that helps! Have a good day :)
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Step-by-step explanation:

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