Solve the system of equations algebraically for real values of x and y.
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Please enter your answer as ordered pairs in the form 
, 
, .... The pairs must be separated by commas.
What will be an ideal response?
, 
, 
, 
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Find the unit tangent vector of the given curve.r(t) = (7 sin3 5t)i + (7 cos3 5t)j
A. T = (7 cos 5t)i - (7 sin 5t)j B. T = (105 sin 5t)i -(105 cos 5t)j C. T = (sin 5t)i - (cos 5t)j D. T = (7 sin 5t)i - (7 cos 5t)j
Solve the problem.Mrs. Smith's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own only a dog?
A. 18 B. 15 C. 22 D. 10
Provide an appropriate response. Solve the following quadratic using any method: 25x2 = 81.
A. x = 
B.
x = 1.8
C.
x = -1.8, 1.8
D. x =
, -
Solve the problem.Fred bicycles 5 km/h slower than Samantha. In the time it takes Fred to bicycle 56 km, Samantha travels 76 km. How fast does Fred bicycle?
A. 19 km/h B. 9 km/h C. 14 km/h D. 28 km/h