Questão 4. Analise a multiplicação a seguir. Alguns simbolos estão substituindo
algarismos no resultado:
397
х
5
1*#5
Quais são os algarismos que devem
substituir os símbolos para que o resultado
da operação esteja correto?
a) * = 5 e#= 5
b) * = 5e # = 8
c) * = 9 e # = 5
d) * = 9 e #= 8​

what is the starting amount? the question is not clear sorry.

step-by-step explanation:

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !