Answer:
33.5
Step-by-step explanation:
let original temperature be T
If after 1 hr temperature drops by 11, then the rate of temperature drop is 11 per hr.
After 4 hours, temperature will drop to 4(T-11).
if temperature after 4 hrs is 90, then
4(T-11)=90
T-11=90/4
T=(90/4) + 11
T=33.5
Answer:23
Step-by-step explanation:
By definition, the volume of a cylinder is given by:
V = π * r ^ 2 * h
Where,
r: radio
h: height
Clearing the height we have:
h = (V) / (π * r ^ 2)
Substituting values:
h = (7448π) / (π * (28/2) ^ 2)
Rewriting:
h = (7448) / ((14) ^ 2)
h = 38 cm
Answer:
The height in centimeters of the cylinder is:
h = 38 cm
<span>Exponential decay are; the domain is all real numbers, the base must be less than 1 and greater than 0 and the function has a constant multiplicative rate of change. The answers are letters A, D and E. An example is w</span>hen there are 70000 bacteria
present in a culture and reduced by half every four hours, the number of
bacteria will decrease. The bacteria will experience an exponential decay
because it decreases its number at a constant decay.
Answer:
(x - 9)(x + 9)
Step-by-step explanation:
x² - 81 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b), then
x² - 81
= x² - 9²
= (x - 9)(x + 9)
