Xx 1.5 1.5 2.5 2.5 choose 1 choose 1 (choice a) a x = 5 x= 5 x, equals, square root of, 5, end square root (choice b) b x = 2 x= 2 x, equals, square root of, 2, end square root (choice c) c x = 3.75 x=3.75x, equals, 3, point, 75 (choice d) d x = 2 x=2x, equals, 2

d

step-by-step explanation:

d

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 !

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step-by-step explanation: