Answer:
1) Area = 12cm²
2) x = 5cm 
Surface area : 69cm²
Step-by-step explanation:
Opposites sides in a rectangle would equal the same. 
so Top/bottom = 20+20=40
Front/back = 15+15=30
40+30=70cm²
94-70=24cm² for left and right side 24÷2=12cm²
2) Those lines represents what side it is equal too which also means the same. 
3cm, you know that base x height = surface area so surface area ÷ height = base 
15/3=5cm
x=5cm
Formula : Base x Height = One surface area 
Front/Back= 15+15=30
Top/bottom = 5x3 = 15+15=30
side/side = 3x3=9 
30+30+9=69cm²
 
        
             
        
        
        
Answer: B
Step-by-step explanation:
none of the other's worked except for B 
A : 2(1), 2(1) = (2,2) which is A'
B : 2(2), 2(4) = (4, 8) which is B'
C : 2(4), 2(1) = (8, 2) which is C'
 
        
                    
             
        
        
        
Answer:
see explanation
Step-by-step explanation:
The n th term (explicit rule) of a geometric sequence is
 = a₁
 = a₁ 
where a₁ is the first term and r is the common ratio
here a₁ = 60 and r =  =
 =  , hence
, hence
 = 60
 = 60 
 
        
                    
             
        
        
        
The probability of randomly selecting a tree or a flower is 8/15.
<h3>What is the probability?</h3>
Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
The probability of randomly selecting a tree or a flower = (number of trees / total number of flash cards) + (number of flowers / total number of flash cards) 
8/30 + 8/30 = 16/30  = 8/15
To learn more about probability, please check: brainly.com/question/13234031
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