solving for a specific variable

What is the reason that absolute value is always written as a positive?

• Absolute value is talking about numbers so it must be positive.
• Absolute value does not always have to be positive.
• Absolute value is like a clock it has only positive numbers.
• Absolute value is talking about distance, distance is always measured by positive numbers.

Tags

CCSS.6.NS.C.7C

Solve  | 2x - 1 | = -4

• x = ¹/₂ and x = -4
• No Solution
• x = ^-3/₂ and x = ⁵/₂
• x = ³/₂ and x = ^-5/₂

Tags

CCSS.HSA.REI.A.2

|v + 8| − 5 = 2 

• {-1,-15}
• {-1,-5}
• {-15,15}
• No Solution

Tags

CCSS.6.EE.B.5

CCSS.6.NS.C.7

Solve.

4 + l x - 3 l = 9

• {-2, 8}

• {5, -5}

• {9, -9}

• no solution

What is the solution of the equation
12x = -8(10-x)

• -20
• -6 ⅔
• -4
• ⅜

For what value of y is the equation
3(y-5) + 2y = 60

• 9
• 13
• 15
• 20

Tags

CCSS.8.EE.C.7B

Greenhouses that produce 750 pounds of tomatoes annually are needed for a proposed farm. If the greenhouses are designed to produce 2.5 pounds of tomatoes per square foot of ground space, or surface area, the surface area of each greenhouse needs to be how many square feet?

• 250
• 300
• 750
• 1875

• (2.5+h)f
• g=1
• f(5+h)/2
• (5f+h) / 2

Tags

CCSS.HSA.CED.A.4

• 17m
• 13m
• -13m
• -17m

Tags

CCSS.7.EE.B.4A

2x + 3(5x - 7) = 47

• x = 1
• x = 2
• x = 3
• x = 4

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3