Mathematics: Solve the system using substitution. 5x + 3y = -4 y - 2x =6 ( _,_ ) the answers are WHOLE numbers!!! not fractions. also I have 4 other questions like this so if you solve it help me on the others please, dm my insta kkatelynquinn :)

Solve the system using substitution. 5x + 3y

charlotte67

20.01.2021

21 feet of railing is needed

Step-by-step explanation:

The diagram which was not included by I know it because I have it for homework this weekend shows the area of the deck:

$x^{2} + 8^{2}$

Since we know the area of the deck is 223 square feet:

$x^{2} + 8^{2}$ = 223

Find 8^{2}[/tex] :

8^{2}[/tex] = 64

$x^{2} + 64 = 223223 - 64 = 169So,[tex]x^{2} = 169Find square root of 169:[tex]\sqrt{169} = 13$

[tex]x^{2} = 13

Find the longest edge:

x + 8 = 13 + 8

=> 21

0,0(0 оценок)