Close 23:59 hours left X yourway2luck. com Account expires soon X 24:00 Settings Number Summative Test - Formulae N/L1... V Summative Test - Formulae N/L1.5 Criteria V Learning REVISION AVAILABLE E 2019 FS L1 Word Formulao Summative N/L1.5 - Summative Assessments Question ID: 15987 Answer the following using the formula: P=21+2w. I=2w Ella wants to put a wire fence around her property. What is the length of the fence she would need to buy to cover her property? w= 13 m Skills Forward o DONT KNOW RESET PLAY AUDIO CALCULATOR​

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.