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Sav [38]
2 years ago
15

What is X? Please help

Mathematics
1 answer:
Karolina [17]2 years ago
7 0

Answer:

70

Step-by-step explanation:

Given is an isosceles triangle.

Angles opposite to equal sides are equal.

Therefore,

x° + x° + 40° = 180°

2x° = 180°- 40°

2x° = 140°

x°= 140°/2

x° = 70°

x = 70

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Determine the value of a so that x1-3x3=-3 2x1+ax2-x3=-2 (i)unique solution(ii)no solution(iii)many solutions
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Answer:

(i)unique solution

Explanation:

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a2=-4+x3

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A book store sells a textbook for $150. If the textbook is on sale with 12% off, and there is a sales tax of 8.25% added to the
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