Find the component form of the indicated vector.Let u = 
. Find -7u.
A. 
B. 
C. 
D. 
Answer: A
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Find the intersection.9x + 8y - 9z = -3, -7x - 5y + 7z = 10
A. x = 11t + 65, y = 0t + 69, z = -11t
B. x = 121t + 65, y = 0t - 69, z = -11t
C. x = -11t - 65, y = 0t + 69, z = -11t
D. x = 11t - 
, y = 0t + 
, z = 11t
Answer the question.In 2000, the balance on Martin's credit card increased by 60%. In 2001, the balance increased by 20%. How does the balance at the end of 2001 compare to the balance at the beginning of 2000?
A. It is 120% higher. B. It is 80% higher. C. It is 92% higher. D. It is 68% higher.
Provide an appropriate response.Is there an identity element for the operation of subtraction over the set of integers? Support your claim with an example.
What will be an ideal response?
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).2x + 3y = 6
A. r(2 sin ? + 3 cos ?) = 6 B. 2 cos ? + 3 sin ? = 6r C. 2 sin ? + 3 cos ? = 6r D. r(2 cos ? + 3 sin ?) = 6