David Bolt

Until you know me, I'll be quiet, shy and almost unnoticeable. Once you get to know me, that's then the real me shines :)

[David Bolt @DavidBolt5]

@renabaddie_ 15
As the 2 triangles are both right angled triangles...
x = sqrt(3^2 + 4^2) + sqrt(6^2 + 8^2)
x = sqrt(9 + 16) + sqrt(36 + 64)
x = sqrt(25) + sqrt(100)
x = 5 + 10
x = 15

[David Bolt @DavidBolt5]

@cosy_love_ x + 4 = 8
Proof
5 × x ^ 2 = 80
x ^ 2 = 80 ÷ 5
x ^2 = 16
x = sqrt(16) = 4
Therefore
x + 4 = 4 + 4 = 8

[David Bolt @DavidBolt5]

@Mistyrose_iQ 144
7x = 84
x = 84 ÷ 7 = 12
Therefore
x^2 = 12^2 = 144

[David Bolt @DavidBolt5]

@farman4x 13
Square root of 144 is 12
Square root of 25 is 5
Equation becomes
12 + 5 ÷ 5 = 12 + 1 = 13

[David Bolt @DavidBolt5]

@_Rezelvy 7
Rearranging the equation
5x = 44 - 9
5x = 35
Therefore
x = 35 ÷ 5 = 7

[David Bolt @DavidBolt5]

@birdurbeeyaa 5
x^2 = sqrt(18)^2 + sqrt(7)^2
x^2 = 18 + 7
x^2 = 25
Therefore x = sqrt(25) = 5

[David Bolt @DavidBolt5]

@Ananya_Notes 9
Square root of 100 is 10
Square root of 25 is 5
Square root of 49 is 7
The question becomes
10 ÷ 5 + 7 = 2 + 7 = 9

[David Bolt @DavidBolt5]

@farman4x 49
Square root of 144 is 12
Square root of 81 is 9
Rearranging the equation so x is on one side of the equals gets either

sqrt(x) = (12 + 9) ÷ 3
sqrt(x) = 21 ÷ 3
sqrt(x) = 7

Or

sqrt(x) = (12 ÷ 3) + (9 ÷ 3)
sqrt(x) = 4 + 3
sqrt(x) = 7

This means
x = 7^2
x = 49

[David Bolt @DavidBolt5]

@ferarri001 36
Square root of x is 10 - 4 = 6
Therefore x = 6^2 = 6

[David Bolt @DavidBolt5]

@irina9284 @ankita_hehe 7 is correct.
Square root of 64 is 8 so the equation becomes either
(64 - 8) ÷ 8 = 56 ÷ 8 = 7
Or
(64 ÷ 8) - (8 ÷ 8) = 8 - 1 = 7

[David Bolt @DavidBolt5]

@XAestheticwalls 13
7x^2 = 95 - 4
7x^2 = 91
x^2 = 91 ÷ 7
x^2 = 13

[David Bolt @DavidBolt5]

@farman4x 9
Square everything to get rid of the square root.
12x + 13 = 11^2
12x + 13 = 121
12x = 121 - 13
12x = 108
x = 108 ÷ 12
x = 9

[David Bolt @DavidBolt5]

@answerhubx 5
0! = 1
Therefore the question becomes
2 + 3 × 1 = 2 + 3 = 5

[David Bolt @DavidBolt5]

@farman4x 121
x = 66 ÷ 6 = 11
As the question is for x^2, not just x...
x^2 = 11 × 11 = 121

[David Bolt @DavidBolt5]

@farman4x 5
Square root of 121 is 11
Square root of 36 is 6
Question becomes
11 - 6 = 5

[David Bolt @DavidBolt5]

@farman4x 7
Square root of 64 is 8
Question then becomes either
(64 - 8) ÷ 8 = 56 ÷ 8 = 7
Or
(64 ÷ 8) - (8 ÷ 8) = 8 - 1 = 7

[David Bolt @DavidBolt5]

@miladreaamy 4
2x + 4x + 7x is the same as 13x
Therefore
13x = 52
x = 52 ÷ 13 = 4

[David Bolt @DavidBolt5]

@IQTestBrain C. 20
-6^2 = 36
-2^2 = 4
4^ 2 = 16
Question becomes
36 - 16 = 20

[David Bolt @DavidBolt5]

@zaini875u 100
0! = 1
Equation becomes
50 + 50 × 1 = 50 + 50 = 100

[David Bolt @DavidBolt5]

@Maryx_650 30. Move the horizontal stick in the middle of the 9 and turn it 90 degrees to make the bottom left stick of a 0