2 years ago

Fiecare categorie.

Mathematics

1 answer:

adelina 88 [10]2 years ago

6 0

Answer:

Step-by-step explanation:

x  0 , VCB ln(1 4x2 ) tương đương với

You might be interested in

The number of bats in a colony is growing exponentially. After 2 years, there were 180 bats. After 5 years, there were 1440 bats

TEA [102]

Answer:

23040 bats

Step-by-step explanation:

Let N(t) be the number of bats at time t

We know that exponential function

$y=ab^t$

According to question

$N(t)=ab^t$

Where t (in years)

Substitute t=2 and N(2)=180

$180=ab^2$ ...(1)

Substitute t=5 and N(5)=1440

$1440=ab^5$ ...(2)

Equation (1) divided by equation (2)

$\frac{180}{1440}=\frac{ab^2}{ab^5}=\frac{1}{b^{5-2}}$

By using the property $a^x\div a^y=a^{x-y}$

$\frac{1}{8}=\frac{1}{b^3}$

$b^3=8=2\times 2\times 2=2^3$

$b=2$

Substitute the values of b in equation (1)

$180=a(2)^2=4a$

$a=\frac{180}{4}=45$

Substitute t=9

$N(9)=45(2)^9=23040 bats$

Hence, after 9 years the expected bats in the colony=23040 bats

8 0

3 years ago

Need some help with this here problem: thanks :)

iVinArrow [24]

Answer:

Step-by-step explanation:

$\left(\left(-3\right)^{16^{\frac{1}{2}}}-\left(-7\right)^{8^{\frac{1}{3}}}\right)^{0.2}=32^{0.2}\\=32^{0.2}A\\32^{0.2}=2\\= 2A$

5 0

3 years ago

A box contains 5 blue marbles 3 red marbles and 6 white marbles. if three marbles are drawn, without replacement, what is the pr

ziro4ka [17]

The probability that all three are blue it's 3:14

8 0

3 years ago

A wave on a rope has a wavelength of 2.0 m and a frequency of 2.0 Hz. What is the speed of the wave?

Vsevolod [243]

depends on the tension and the length of the rope

4 0

3 years ago

What is the slope of the line through (-9, 6) (-3, 9)

gizmo_the_mogwai [7]

Slope= m= 1/2
Hope this helps!

3 0

2 years ago

Read 2 more answers