Kara has 21 collectible buttons to sell. She sells the small buttons for $3 and the large buttons for $4, and earns a total of $
1 answer:
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Answer:
Step-by-step explanation:
Multiplying positive integer and negative integer gives a negative integer i.e ( + ) × ( - ) = ( - )
The negative and positive integers are always subtracted but posses the sign of the bigger integer
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Answer:
XY is a tangent
Step-by-step explanation:
Given
Required
Is XY a tangent?
XY is a tangent if:
Because XY should make a right angle at point X with the circle
Where
So, we have:
This gives:
<em>Yes, XY is a tangent</em>