The temperature is dropping at a rate of five degrees per hour. Let d represent the number of degrees the temperature drops.
Lett represent the number of hours that pass.
Which is the dependent variable?
O the number of hours
the number of degrees the temperature drops
the rate at which the temperature drops
O the day of the week

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

5

step-by-step explanation:

6cm

step-by-step explanation:

b) yes

step-by-step explanation:

let the statements be named as,

statement 1: if the power has been cut, then the refrigerator does not work.

statement 2: the refrigerator does not work.

conclusion: the power has been cut

now, 'law of detachment states that if we have the statements given as,

1. if p, then q.

2. p

then, we get the true statement or conclusion as q'.

thus, on comparing, we get that,

p: if the power has been cut.

q: the refrigerator does not work.

so, the argument is true by the law of detachment.