6. Suhu sejenis logam menyusut daripada 100°C kepada T°C mengikut persamaan T = 100(0.9)' selepas x saat. Hitung (a) suhu logam selepas 5 saat,
(b) masa, x, dalam saat untuk suhu logam menyusut daripada 100°C kepada 80°C.
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351.23

step-by-step explanation:

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )