Describe and correct the error in solving the equation.

x=5/2

Step-by-step explanation:

(1/5)x + 1/2 =1

x/5 + 1/2 =1

here,

x/5 + 1/2

[LCM of denominators(5&2)=10]

10(LCM of denominators) divided by the denominator of x(which is 5=10/5=2

then,

multiply with numerator of x (which is x)=2x(1)

do the same,

10 divided by the denominator of  1/2=10/2=5...(2)

multiply with numerator =5 x 1=5

so, the sum of the  fraction is,

(2x+5)/10  ; which equals 1

(2x+5)/10=1

2x+5=10       [multiplied by 10 on both site]

2x=10-5        [subtraction by 5 on both site]

2x=5

x=5/2            [divided by 2 on both site]  

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

24

step-by-step explanation: