Question

Q8
A cooling machine requires that room temperature to be lowered from 30°c at the rate of 5°c
every hour. What will be the room temperature after 8 hours of starting the process?
Q 8 answer is -10

What will be the sign of the product if we multiply together 11 negative integers and 6 positive
integers?

Q 9 answer is negative

please write a right answer with explanation then I will mark you as a brainlist answer

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Answer 1

Answer:

-10{q ..8}

Step-by-step explanation:

given,

the temperature should be lowered to -30c to -5c

we have to find,

temperature after 8 hours

so,

temperature after 8 hr=8×-5

=-40

=( -40) -(-10=

=-10

explainatin,

the temperature is lowered so it is written in negative {-30,-5} then we have to find the temperature after 8 hr so we multiplied 8×-5 then subract it by -30 because it is lowere

q...9

let 11 negative integers be -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11

and 6 positive integers be 1,2,3,4,5,6 so ,

the no. of negative integer is greater so it should be negative

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