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3 years ago

P(t) = 520/1+5e^-0.2t Find the initial population size

1 answer:

8 0

The initial population it 86.67.

To do this you would plug in 0 for t then solve the equation.

520/1+5e^-0.2(0)=
520/1+5(1)=
520/1+5=
520/6= 86.67

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even built a scale model of the Gateway Arch in St.Louis the actual height of the Gateway Arch is 630 feet the height of the mod

suter [353]

This is eazy 630=90x
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7=x
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3 years ago

A television was sold at a gain of 20% after allowing a discount of 20% on its marked price . Had it been sold after allowing 25

Novay_Z [31]

Answer: The marked price is 40% more than the original price

40% - 25% = 15% or 1450

Marked price = 140%

140 × 1450 ÷ 15 = 13533. 33

Step-by-step explanation:

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3 years ago

Can anyone help with this equation ?

Vaselesa [24]

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3 years ago

If sin(θ -π/2) = 0.73.. find cos (-θ) plz explain how to solve

Temka [501]

Answer:

$cos(-\theta) = -0.73$

Step-by-step explanation:

It is given that:

$sin(\theta -\dfrac{\pi}{2}) = 0.73$

<u>Formula to be used:</u>

$1.\ sin(-x) = -sinx\\2.\ sin(\dfrac{\pi}{2}-x) = cosx\\3.\ cos(-x) = cosx$

Using Formula (1) written above:

$\Rightarrow sin (\theta - \dfrac{\pi}{2})=sin(-(\dfrac{\pi}{2}-\theta ))\\\Rightarrow -sin(\dfrac{\pi}{2}-\theta)$

Now, using Formula (2) written above:

$\Rightarrow -sin(\dfrac{\pi}{2}-\theta) = -cos \theta$

So, we can say that:

$sin(\theta -\dfrac{\pi}{2}) = -cos\theta = 0.73 ...... (1)$

We have to find the value of $cos(-\theta)$ .

Using Formula (3) written above:

$cos(-\theta) = cos\theta$

So, ultimately we need to find the value of $cos\theta$

Using equation (1):

$-cos\theta = 0.73\\\Rightarrow cos\theta = -0.73$

So, the answer is $cos(-\theta) = -0.73$ .

3 0

3 years ago

Find the value of xxx in the triangle shown below.

wlad13 [49]

$\bold{ANSWER:}$
h ≈ 3.0 units

$\bold{SOLUTION:}$

7 0

2 years ago