Use an Euler diagram to determine whether the argument is valid or invalid.All dogs are animals.
Therefore, some dogs are pets.
A. valid
B. invalid
Answer: B
Mathematics
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = sin-1(7t)i + ln(2t2 + 1)j + 
k
A. 
B. 
C. 
D. 0
Mathematics
Determine whether the second polynomial is a factor of the first polynomial.(7x3 + 24x2 - 17x + 4); (x + 4)
A. Yes B. No
Mathematics
Factor completely, if possible.98a4 - 50b2
A. 2(7a2 - 5b)2 B. 2(7a2 + 5b)2 C. 2(7a2 + 5b)(7a2 - 5b) D. Prime
Mathematics
Use the circle graph of one family's allowance for appliances in their new house to complete the exercise. Write ratios as fractions in lowest terms.
A = $392D = $430B = $956E = $448C = $528F = $379Find the ratio of clothes washer to total allowance.
A. 
B. 
C. 
D. 
Mathematics