A single soft drink costs $4 and a single popcorn costs $2.50
-6x + 9y = 21 . . . (1)
10x - 3y = -23 . . . (2)
(2) x 3 => 30x - 9y = -69 . . . (3)
(1) + (3) => 24x = -48 => x = -48/24 = -2
From (1), -6(-2) + 9y = 21 => 9y = 21 - 12 = 9 => y = 9/9 = 1
Threfoe, x = -2 and y = 1
Answer:
We can get 27 pieces of wire 3.6 cm long and have a piece 7/9 cm left over
Step-by-step explanation:
Find the "unit length" by dividing 1 m by 3.6 cm:
1 m
-----------
3.6 cm
Recall that 1 m = 100 cm. Multiply the following by the conversion factor 100 cm / 1 m:
1 m 100 cm
----------- * ----------------- = 27,7777777...
3.6 cm 1 m
We can get 27 pieces of wire 3.6 cm long and have a piece 7/9 cm left over (verify this by dividing 7 by 9 on a calculator).
Hello, It would be 12x6x8 that should be the correct answer
Answer:
5 p.m.
Step-by-step explanation:
Newton's law of cooling-
where,
= the initial temp. = 98.6 F (human body temp.)
k = 0.1947,
T(t) = 66 F,
= 55 F,
Putting the values,
Therefore, the time of death was 7 hours before midnight i.e at 5 pm.