Solve the problem. When appropriate, round the solution to the nearest tenth. As needed, use the formula 
Find the pH if the [H3O+] = 6.3 × 10-2.
A. 1.8
B. 1.2
C. 2.8
D. 2.2
Answer: B
Mathematics
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Find an equation for the line that passes through the given point and satisfies the given conditions.P = (-5, 5); parallel to v = -4i - 2j
A. -4x - 2y = 10 B. -4x - 2y = 20 C. y - 5 = - 7(x + 4) D. -2x + 4y = 30
Mathematics
Solve the problem.Find the length of the unknown side of the right triangle, where a and b are the legs and c is the hypotenuse. a = 6, b = ?, c = 10
A. b = 10 B. b = 8 C. b = 7 D. b = 9
Mathematics
In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(
, - 
)Find csc t.
A. - 
B. - 
C. 
D. 
Mathematics
Perform the indicated operation.
A. -29
B. 29
C. - 
D. 
Mathematics