<h3>
Answer: -76 (choice C)</h3>
Explanation:
We're applying the dot product.
u dot v = 3*(-4) + (-8)*8
u dot v = -12 - 64
u dot v = -76
The idea is that we multiply the x coordinates together, and the y coordinates together separately. Afterward you add the products. The result of any dot product is a scalar value, aka a single number.
The dot product is useful in many applications. One of which is to determine if two vectors are orthogonal.
If you round $4,329.97, $452.28, and $279.34 you would get $4,000, $500, and $300. If you add $452.28 (rounded to $500) twice to $4,329.97 (rounded to $4,000) then you would get $5,234.56 which you would round to $5,000. Then when Alexa withdrawals $279.34 (rounded to $300), you subtract $279.34 from $5,234.56 (rounded to $5,000) and you get $4,955.22 which would be rounded up to $5,000. This proves that Alexa's estimate was reasonable.
Answer:
6 – (–3) = 9
|6 – (–3)| = 9
Step-by-step explanation:
Expression A:
Expression B:
Hope this helps.