Sum of Solutions

Two numbers have a sum of 217 and a difference of 85. What is the larger of the two numbers?

Two numbers have a sum of 217 and a difference of 85. What is the smaller of the two numbers?

The sum of Mr. Micklow and Ms. Craft's age is 55.  The difference is 3.  
Solve:
x + y = 55
x - y = 3

• (26, 23)

• (26, 29)

• (29, 26)

• (29, 32)

• a
• b
• c
• d

Tags

CCSS.HSA-REI.B.4B

• 3

• 6

• -3

• 2

Tags

CCSS.HSA-REI.B.4B

Which of the following is used to solve the sum of the roots of the quadratic equation?

Tags

CCSS.HSA-REI.B.4B

2x² - 6x - 7 = 0
What are the sum and the product of roots?

• Sum = 3
  Product = 7/2

• Sum = - 3
  Product = - 7/2

• Sum = - 3
  Product = 7/2

• Sum = 3
  Product = - 7/2

-2x² - 5x + 1 = 0
What are the sum and product of roots?

• Sum = 5/2
  Product = 1/2

• Sum = - 5/2
  Product = - 1/2

• Sum = - 5/2
  Product = 1/2

• Sum = 5/2
  Product = - 1/2

• 2

• -2

What is the sum of the roots of the quadratic equation x^2-4x-12=0 ?

• 4

• -4

• 12

• -12