10 Die Bevölkerungszahl eines Landes wird mit der Funktion f mit f(t)=20⋅e−0,0198t modelliert ( t in Jahren, f(t) in Millionen). Zeigen Sie, dass die Bevölkerungszahl andauernd abnimmt. Geben Sie mithilfe Ihres Rechners die ungefähre Anzahl der Jahre an, die es dauert, bis sich die Bevölkerungszahl nach diesem Modell ungefähr halbiert hat.
10 Die Bevölkerungszahl eines Landes wird mit der Funktion f mit f(t)=20⋅e−0,0198t modelliert ( t in Jahren, f(t) in Millionen). Zeigen Sie, dass die Bevölkerungszahl andauernd abnimmt. Geben Sie mithilfe Ihres Rechners die ungefähre Anzahl der Jahre an, die es dauert, bis sich die Bevölkerungszahl nach diesem Modell ungefähr halbiert hat.
Let f(x)=(x+4)3−x and estimate the one-sided limits below. If you need to enter ∞ or −∞ , enter INFINITY or -INFINITY.
(a) limx→−4+f(x)=□ help (limits)
(b) limx→−4−f(x)=□ help (limits) Note: You can earn partial credit on this problem.
UNIT 3 PRACTIC...
Find the derivative of the following fun
11) y = ln(√x)
2
13) y = In
ln
x√√x+1
(x³-6)²
2
y
JD
=
1
(x²³-6)²
+3
X√x+1
2√x+1
[(x³-6)²
(x-
₤ (x²-6) (x+1)² + (x² -6)
ху
X√xFT (x²-6
² 17 = (³·×+ h.1)
ye + x = 43
-6
The graph of the equation representing compound interest is that of:
A. linear function.
B. quadratic function.
C. exponential function.
D. None of the above
"Block and set" is the technique of having the actors go though their stage directions step by step very slowly and then going back right away full speed.
True
False
Use the quotient rule to simplify. Assume that all variables represent positive real numbers.
381y127x381y127x=□
(Type an exact answer, using radicals as needed. Simplify your answer.)
Identify the property that justifies the statement z(2w+y)=(2w+y)z.
A associative property of multiplication
B commutative property of multiplication
C multiplication property of equality
D symmetric property of equality
Given the sequential instructions below. Identify the instructions suitable for parallelism and those that are not suitable.
i. e=a+b
ii. p=f+c
iii. f=c+d
iv. g=e∗f
71 Soit Sn la somme définie pour tout n∈N par Sn=1+5+52+53+…+5n. 1. Exprimer Sn en fonction de n. 2. Déterminer limite de Sn quand n tend vers +∞ en justifiant.
Below is a hypothesis test. Label the different parts of the test in the boxes. A hospital director is told that 47% of the treated patients are uninsured. The director wants to test the claim that the percentage of uninsured patients is over the expected percentage. A sample of 400 patients is found that 200 were uninsured. At the 0.02 level, is there enough evidence to support the director's claim?
Ho:p≤0.47Ha:p>0.47Z=np(1−p)p^−p=4000.47(1−0.47)0.5−0.47=4000.47(0.53)0.03=4000.24910.03=0.000622750.03=0.024950.03=1.20
5 Honors
Question 1, 6.0.60
Points: 0 of 1 Determine the smallest number both the numerator and denominator should be multiplied by to rationalize the denominator of the radical expression.
332
4. Given the line whose equation is 2y−6x=10, for every one unit of increase in x, which of the following is true about y ? (Hint, rearrange into y=mx+b form first.)
(1) y decreases by 6
(2) y increases by 3
(3) y increases by 2
(4) y decreases by 10
Official Time: 14:43:23 Question 2 [10 points]
Find the characteristic polynomial of A. Use x for the variable in your polynomial.
A=⎣⎡1000−1−200−102205802⎦⎤
characteristic polynomial of A is: 0
SUBMIT AND MARK
Otricial Time: 14:44:47 Question 1 [10 points]
Find the characteristic polynomial of A. Use x for the variable in your polynomial. You do not need to factor your polynomial.
A=⎣⎡100−9010120−11⎦⎤
characteristic polynomial of A is: 0
SUBMIT AND MARK
SAVE ANL
Vérifier que ∀Z∈C,∣Z∣2=ZZˉ.
b) Montrer que ∀Z1,Z2∈C,
∣Z1+Z2∣≤∣Z1∣+∣Z2∣,
t que l'égalité a lieu si et seulement si arg(Z1)=arg(Z2)[2π].
c) Soient A,B,C et D quatre points deux à deux distincts et non alignés. Montrer ue :
AB⋅CD+AD⋅BC≥AC⋅BD,
t que l'égalité a lieu si et seulement si les points A,B,C,D sont cocycliques dans cet rdre.
Question 10 (2 points)
Statement: A function is a relation where each input can be paired with only one output. Choose if the statement is true or false.
True
False
View hint for Question 10
Express as a single logarithm and simplify, if possible.
41logcx+4logcy−5logcx41logcx+4logcy−5logcx=□
(Type your answer using exponential notation. Use integers or fractions for any numbers in the expression.)
3. At a seaport, the depth of the water, d , in meters, at time t hours, during a certain day is given by:
d=3.4sin(2π10.6(t−7.00))+2.8
[4 marks]
a) What is the depth of the water at 6:30pm ? (Answer to the nearest hundredths).
b) How long will the depth be above 4 metres during one full day of 24 hours?
Look at the following inequalities.
1,000,000>237,0<237,22>237−1,000<237,−1918<237,237>0.2237<21,237<461
a. Which of the numbers above are the right of 237 on a number line
b. Which of the numbers above are the left of 237 on a number line?
For each inequality, choose the statement that describes its solution. If applicable, give the solution.
(a) 3(4−u)+3u>16
No solution
u रे □u>□
All real numbers are solutions
(b) 3(5v+2)≤13v+16
No solution
v≤□v≥□
All real numbers are solutions
Nrite the complex number in trigonometric form r(cosθ+isinθ), with θ in the interval [0∘,360∘).
−3+3i−3+3i=□□ (cos ∘+isin□∘ )
(Type the value for r as an exact answer, using radicals as needed. Type the value for θ as an integ nearest tenth as needed.)
Find the sum of the pair of complex numbers.
21+65i,65+21i The sum is □ .
(Simplify your answer. Type your answer in the form a + bi. Use integers or fractions for any numbers in the expressic