Question

1. (a) Calculate 1 - 2 + 3 - 4+ 5 - 6 + ...... + 179 - 180.
(b) Find the value of 5 + (- 5) + 5 + (- 5) + 5 + ...... if the number of fives are
(i) 148
(ii) 191
2. A cement company gains 12 per bag of white cement sold and gets a loss of *
per bag of grey cement sold.
(a) !f the company sells 3500 bags of white cement and 5000 bags of grey cement in
month, find the gain or loss.
(b) If the number of grey cement bags sold is 6000, how many bags of white ceme
should the company sell to have neither gain or loss?

Who Can Solve All This Questions will be marked as Branliest​

Answer 1

Answer:

1) a. If we make it pairs we will get -1 + 1= 0

So, 180 can make perfect pairs... 0 is answer

b. 5+(-5)= 0

i) 0

ii)-5

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Step-by-step explanation:

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