Answer:
Grapes=19.51
Step-by-step explanation:
Apples=$2.19 per pound
Grapes=$2.60 per pound
Apples+Grapes=20 pounds
A+G=20
A=20-G
Equation is
PaA+PgG=35.80
2.19A+2.60G=35.80
2.19(20-G)+2.60G=35.80
43.8-2.19G+2.60G=35.80
43.8-0.41G=35.80
-0.41G=35.80-43.8
-0.41G=-8
Divide both sides by 0.41
G=19.51 pounds
Recall
A=20-G
A=20-19.51
A=0.49 pounds
 
        
             
        
        
        
n(A) = 26
Solution:
Let us first define the cardinal number of the set.
Cardinal number of the set:
The number of distinct elements in a finite set is called its cardinal number. It is denoted as n(A).
Given set: A = {a, b, c, .... z}
We know that, there are 26 elements in the alphabet "a to z".
Number of elements in the set A = 26
Hence n(A) = 26.
 
        
             
        
        
        
Answer:  1 3/4  cups of apples in each batch 
Step-by-step explanation:
 STEP  1
Writing out the equation to represent if 7 cups of  apples make 4 batches   One batch is as a result of how many  cups of apples 
 LET x be number of cups of apples to make each batch
 7 cups of  apples = 4 Batches 
         x cups of apples = 1 Batch 
STEP 2  Solving by cross multiplication 
1 batch x 7 cups of apples = 4 batches  X x cups of apples
x cups of apples=1 batch x 7 cups of apples / 4batches 
x   = 7 / 4 =  1 3/4 
 number of cups of apples to make each batch=  1 3/4 
 
        
             
        
        
        
Answer:
Step-by-step explanation:
CI = 624 x 1.05 ^3 =722.358 for whole investment   722.36-624 =98.36 for interest only
or for interest only do 624 x .05^3 = 98.36
Standard interest is done like this
year 1 = 624 x 1.05 = 655.20
655.20-624 = 31.20
year 2 = 655.20 + 31.20 = 686.40
year 3 = 686.40 + 31.20 = 717.60
total interest = 717.60-624 = 93.60 
So standard interest is the method you have done they may be asking for either compound interest which is the first one or asking for whole investment which means you need to also add 624 at end for Standard interest.
if you need CI interest do the top one.