Previous question Rational numbers prior question delete your full name you accidently wrote in your question for rational numbers by pressing edit icon answered here so your edit is possible ok! Answer is -2t +7t = 5t Step-by-step explanation: question asks for addition only (4t-6t= -2t)+(8t-1t=7t) This question on page = 1) At 2:16 p.m.= -180ft - 40ft = -220ft 2) At 2:17 p.m = -175ft-40ft= -115ft 3) At 2:18 p.m. = -185ft - 40ft = -225ft 4) The difference is show your work by reversal 2:18-2:15 = 3 minutes so the distance is also reversed at (-225) - (-40 )= -225 + 40 = -175

Step-by-step explanation: This is minus - number minus- number = minus number counting bkwards but when when we subtract two minus number with another minus it becomes a plus + just between the brackets see question 4 brackets use. The work is using brackets for question 4.

6 0

2 years ago

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True or false a function is a preset formula that performs a calculation?

LenKa [72]

Hmm. Certainly a preset formula that takes an input, performs a calculation, and produces an output is a function.

But other things might be functions as well. Being a function doesn't require an algorithm or preset formula, just some way of describing a single output for every input in the domain. A table would be another way to specify a function. Sometimes we know something's a function but we don't know how to calculate it.

So I'm not sure really what they're after in this question, but I'm going to say FALSE.

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3 years ago