Answer:
The square root of -1 is i
Hence, the equation for the question (7) is
and equation for (8) is
. It can be solved by linear equation in one variable.
What is a linear equation in one variable?
A linear equation in one variable is written as
. Here,
and
are constants and
is a variable.
(7)
Consider n number of baseball cards does Mike have. Since this is 19 less then the cards Allan have hence, as you add 19 in n then it will give 84.
(8)
Consider the speed of Michelle is n. As, it is 3 times less than the speed of the Jamie hence, it you multiply 3 with n then it will give 12.

Hence, the equation for the question (7) is
and equation for (8) is
.
Learn more about linear equation in one variable from the following link:
brainly.com/question/85774
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16 x w x 8 = 1664
<span>w = 1664 / 16*8 = b) 13 cm</span>
8+16=24
<em />Its just simple addition
Answer:
Step-by-step explanation:
He must go to bed at 10:45 pm.
12 midnight to 7am = 7 Hours
Remaining 1:15
12:00 - 1:15 =11:60 - 1:15 =10:45pm