IM Unit 5 Test Review

Select ALL expressions whose value is negative.

• $\frac{-13}{2}$

• $\frac{13}{-2}$

• $\frac{-13}{-2}$

• $\left(-5\right)\ \cdot\ \left(\frac{3}{4}\right)$

• $\left(-5\right)\ \cdot\ \left(-\frac{3}{4}\right)$

Answer explanation

Remember when multplying and dividing integers: When the signs match the answer is positive, when they don't the answer is negative.

The shark is 2,000 feet below sea level. Directly above the shark, a fish is swimming 1,250 feet below sea level. Directly above the shark and fish is a bird flying at 2,500 feet above sea level.

Select the true statement.

• The distance between the heights of the fish and the bird is -3,750 feet.

• The difference in height between the fish and the bird is 3,750 feet.

• The difference in height between the fish and the shark is -750 feet.

• The distance between the heights of the fish and the shark is 750 feet.

Answer explanation

2,000 - 1250 = 750 feet; remember distance has to be a postitive number.

let x =  $-\frac{3}{2}$  and y =  $\frac{5}{2}$  

Select ALL the expressions that have a positive value.

•  $x\cdot y$  

•  $\frac{y}{x}$  

•  $y-x$  

•  $x\ +\ y$  

•  $x-y$  

 $40\ -\ \left(-70_{ }\right)$  
What is the value of this expression?

Evaluate responses using AI:

OFF

Answer explanation

110

 $3.3\ +\ \left(-5.9\right)$  

What is the value of this expression?

Evaluate responses using AI:

OFF

Answer explanation

 $-2.6$  

 $8.2\ +\left(-8.2\right)$  

What is the value of this expression?

Evaluate responses using AI:

OFF

Answer explanation

0

 $\frac{1}{2\ }a\ =\ -6$  
Solve the equation.

•  $3$  

•  $-3$  

•  $-12$  

•  $12$  

Answer explanation

 $-12$  

 $13\ -x\ =13.5$  

•  $-.5$  

•  $.5$  

•  $26.5$  

•  $-26.5$  

 $-0.5\ =-10x$  

 

•  $50$  

•  $-50$  

•  $0.05$  

•  $-0.05$  

What is the answer to letter a?

What is the answer to letter b?

Evaluate responses using AI:

OFF

Answer explanation

a = 90
b = -75