You have to fraw sticks as the 10's for example #2 prtend thise are the sticks.(I)
IIII 4 tens in 42 the circles as ones  O O SO,IIII00
        
                    
             
        
        
        
Answer:
Geoff is 16.77 m far from base of tower.
Step-by-step explanation:
steps are in the picture below.
<h3><u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u>i</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>n</u><u>e</u><u>e</u><u>d</u><u> </u><u>t</u><u>o</u><u> </u><u>a</u><u>s</u><u>k</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u></h3>
 
        
             
        
        
        
Answer:
if we take the number of quarters Barrett have to be x we know Penelope has twice that ie 2x. so in total they have 2x+x = 60, 3x = 60; so x= 60/3 = 20. 
Barrett has 20 quarters.
 
        
             
        
        
        
Answer: its b because once u simplify everything it amounts to b
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
replace x with 2 and you will got the answer...