Solve the problem.The perimeter of a triangle is 
The triangle is isosceles now, but if its base were lengthened by 
and each leg were shortened by 
, it would be equilateral. Find the base of the original triangle.
A. 14 cm
B. 23 cm
C. 16 cm
D. 13 cm
Answer: A
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Use percents, percent equations, and/or percent proportions to solve the application.Jeremy switches from drinking regular soda to drinking diet soda. If his regular soda contains 195 mg of sodium per liter and the diet soda contains 140 mg of sodium, find his percent decrease in calories by switching from regular to diet soda.
A. 58.2% B. 39.3% C. 28.2% D. 71.8%
Simplify the algebraic expression.3 - 3(2m - 5)
A. -6m + 15 B. 6m + 18 C. -6m + 18 D. -2m + 18
Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominator where necessary.sin ? = 
Find sec ?.
A. 
B. 
C. 
D. 
Solve the equation for ? if 
. Give your answer in degrees.
?
?
A. 0° B. 30°, 150° C. 90°, 180° D. 0°, 180° E. 240°, 300°