Solve the problem.The perimeter of a triangle is 76 cm. The triangle is isosceles now, but if its base were lengthened by 4 cm and each leg were shortened by 7 cm, it would be equilateral. Find the length of the base of the original triangle.
A. 29 cm
B. 22 cm
C. 18 cm
D. 17 cm
Answer: C
Mathematics
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+ 
A. 
B. 
C. 
D. 
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The following circle graph displays Chris and Mary Smith's monthly $2900 family budget. Use the circle graph to answer the question. 
What is the ratio of money spent on rent to money spent on utilities?
A. 
B. 
C. 
D. 
Mathematics
Prove the formula for all natural numbers n.
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List the steps involved.
What will be an ideal response?
Mathematics
Solve the system of two equations in two variables. x - 4y = 20-3x - 3y = 15
A. (1, -6) B. (5, 0) C. (0, -5) D. No solution
Mathematics