lachlyn40
03.11.2020 •
Mathematics
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Ответ:
133
Step-by-step explanation:
If he cleaned 38 windows in 2 hours then he cleaned:
38 win / 2 hours = 19 windows per hour.
If he goes for 7 hours then he cleans a total of: 19 * 7 = 133 windows in 7 hours.
Ответ:
Spencer: 6x - 2 = -4x + 2 /+4x6x - 2 + 4x = -4x + 2 + 4x10x - 2 = 2
Jeremiah:6x - 2 = -4x + 2 /-6x6x - 2 - 6x = -4x + 2 - 6x-2 = -10x + 2
They both are correct. But in Jeremiah's version of solving the equation, we would have to multiply equation by -1, which we don't have to do in the Spencer's version.
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