1/2 minus 2/5 pls help me

1/10

Step-by-step explanation:

need same denominator

1/2 x 5 = 5/10

2/5 x 2 = 4/10

5/10 - 4/10 = 1/10

1/10 (0.1)

Step-by-step explanation:

1 ÷ 2 is equal to 0.5

2 ÷ 5 is equal to 0.4

Subtract 0.5 from 0.4 to get 0.1 or 1/10

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

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: