Please help, I’ll give anyone a Brainliest to see if anyone who has the best answer to the math question with the best efforts and the best step-by-step explanation, well good luck guys and I will check the answer to see if it’s appropriate! :)

Step-by-step explanation:

a) Length = 20 m, Width = 10 m

2x * x = 200

x * x = 100, x = 10, 2x = 20

b) 60 m

Find Perimeter

20 x 2 + 10 x 2 = 40 + 20 = 60

c) 22.4 meters

Find diagonal using Pythagorean Theorem

10 x 10 + 20 x 20 = x * x

100 + 400 = x * x

x * x = 500

x = , rounded to 22.4

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.