Answer:
x = 33
Step-by-step explanation:
(x + 13) + (4x + 2) = 180
x + 13 + 4x + 2 = 180
5x + 15 = 180
5x = 180 - 15
5x = 165
x = 165/5
x = 33
Check:
(x + 13) + (4x + 2) = 180
(33 + 13) + 4(33) + 2 = 180
46 + 132 + 2 = 180
46 + 134 = 180
-5x + y = -5.....multiply by -2
-4x + 2y = 2
---------------
10x - 2y = 10 (result of multiplying by -2)
-4x + 2y = 2
-----------------add
6x = 12
x = 12/6
x = 2
-5x + y = -5
-5(2) + y = -5
-10 + y = -5
y = -5 + 10
y = 5
solution is (2,5)
11 to 11.2 inches Is an estimate length of a football
Answer:
1764
Step-by-step explanation:
![from \: the \: question \: rt {}^{2} \\ were \: r =9 \\ and \: t = 14 \\ rt {}^{2} = 9 \times (14) {}^{2} = 9 \times 196 = 1764](https://tex.z-dn.net/?f=from%20%5C%3A%20the%20%5C%3A%20question%20%5C%3A%20rt%20%7B%7D%5E%7B2%7D%20%20%5C%5C%20were%20%5C%3A%20r%20%3D9%20%20%5C%5C%20and%20%5C%3A%20t%20%3D%2014%20%5C%5C%20rt%20%7B%7D%5E%7B2%7D%20%20%3D%209%20%5Ctimes%20%2814%29%20%7B%7D%5E%7B2%7D%20%20%3D%209%20%5Ctimes%20196%20%3D%201764)