Let x represent one number and let y represent the other number. Use the given conditions to write a system of equations. Solve the system and find the numbers.One number is 1 less than a second number. Twice the second number is 19 less than 5 times the first. Find the two numbers.
A. 6 and 7
B. -8 and -7
C. 8 and 9
D. 7 and 8
Answer: D
Mathematics
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Find the standard equation of the circle that satisfies the conditions.Center (8, 3), radius 11
A. (x + 3)2 + (y + 8)2 = 11 B. (x + 8)2 + (y + 3)2 = 121 C. (x - 3)2 + (y - 8)2 = 11 D. (x - 8)2 + (y - 3)2 = 121
Mathematics
Solve the problem. Round to two decimal places unless otherwise indicated.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: y = 
. How many hours of study are needed to score 91?
A. 4.60 hr B. 99.97 hr C. 46.00 hr D. 9.63 hr
Mathematics
Simplify.7
A. 7q
B. 21
C. 21p3q3
D. 21p3q
Mathematics
A line passes through the points 
and 
. Write the equation in slope-intercept form of the perpendicular line that passes through the point 
.
A. 
B. 
C. 
D. 
Mathematics