which equation shows how to find the product of 100,000 and 1,000,000 using scientific notation?
a) 100,000 × 1,000,000 = (1 × 105) × (1 × 106) = 1 × 10(5 + 6) = 1 × 1011
b) 100,000 × 1,000,000 = (1 × 105) × (1 × 106) = 1 × 10(5 × 6) = 1 × 1030
c) 100,000 × 1,000,000 = (1 × 106) × (1 × 107) = 1 × 10(6 + 7) = 1 × 1013
d) 100,000 × 1,000,000 = (1 × 106) × (1 × 107) = 1 × 10(6 × 7) = 1 × 1042

answer: idk

step-by-step explanation:

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.

c.

step-by-step explanation: