Toby skated from his house to the beach at a constant speed of 888 kilometers per hour, and then skated from the beach to the park at a constant speed of 777 kilometers per hour. The total distance Toby skated was 202020 kilometers, and it took him twice as long to get to the park. Let bbb be the number of hours it took Toby to skate from his house to the beach, and ppp the number of hours it took him to skate from the beach to the park. Which system of equations represents this situation? Choose 1 Choose 1 (Choice A) A 8b+7p=20 b=2p ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 8b+7 p=20 b=2p (Choice B) B 8b+7p=20 p=2b ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 8b+7p=20 p=2b (Choice C) C 7b+8p=20 b=2p ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 7b+8p=20 b=2p (Choice D) D } 7b+8p=20 p=2b ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 7b+8p=20 p=2b

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

$205,000 here you go i had to guess it but i got it correct so yeah

answer: 840

step-by-step explanation: