exam Maths Puzzle Numerical Ability

There is a right triangle, ABC. Angle C is the right angle. Angle A is 22 degrees. Line AC is 10 cm. What is the length of side BC?

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exam Other Question

|m+5|+9 < 16
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m + 5 is in absolute value, + 9 is less than or Equal to 16 Please help me to sketch the following line by method of Linear Function or straight lines.
7. y = (2/3)x-4
8. 8x-3y=24
9. slope=-3/4

Thanks, I am grateful for your help.