Answer:
-4a
Step-by-step explanation:
a(4-8)= a(-4)= -4a
Answer:
-4
Step-by-step explanation:
All you have to do is find the change of y over the change of x.
Answer:
Order of operations tells you to perform multiplication and division first, working from left to right, before doing addition and subtraction. Continue to perform multiplication and division from left to right. Next, add and subtract from left to right.
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Answer:0.50 cents
Step-by-step explanation: do $6.50 -5.00 which gives you $1.50 .Next divide 1.50 by 3 which gives you 0.5 which is 0.50 cents.
Hope it helps
No way to know what reasons you're supposed to choose from...
By definition of tangent,

The angle sum identities give

, so we can cancel those terms to get

as required.