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ruslelena [56]
3 years ago
13

Last week Karen spent $121.35 on food for her family. She only has $200 to spend every two weeks. How much does hse have left to

spend?
Mathematics
2 answers:
solmaris [256]3 years ago
8 0
Answer

Karen has $78.65 left to spend
yan [13]3 years ago
5 0

Answer:

$78.65

Step-by-step explanation:

take 200-121.35=78.65

$78.65

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Write in standard notation. 6.9 × 10^-3
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Step-by-step explanation:

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3. A rare species of aquatic insect was discovered in the Amazon rainforest. To protect the species, environmentalists declared
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The number of months until the insect population reaches 40 thousand is 14.29 months and the limiting factor on the insect population as time progresses is 250 thousands.

Given that population P(t) (in thousands) of insects in t months after being transplanted is P(t)=(50(1+0.05t))/(2+0.01t).

(a) Firstly, we will find the number of months until the insect population reaches 40 thousand by equating the given population expression with 40, we get

P(t)=40

(50(1+0.05t))/(2+0.01t)=40

Cross multiply both sides, we get

50(1+0.05t)=40(2+0.01t)

Apply the distributive property a(b+c)=ab+ac, we get

50+2.5t=80+0.4t

Subtract 0.4t and 50 from both sides, we get

50+2.5t-0.4t-50=80+0.4t-0.4t-50

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Divide both sides with 2.1, we get

t=14.29 months

(b) Now, we will find the limiting factor on the insect population as time progresses by taking limit on both sides with t→∞, we get

\begin{aligned}\lim_{t \rightarrow \infty}P(t)&=\lim_{t \rightarrow \infty}\frac{50(1+0.05t)}{2+0.01t}\\ &=\lim_{t \rightarrow \infty}\frac{50(\frac{1}{t}+0.05)}{\frac{2}{t}+0.01}\\ &=50\times \frac{0.05}{0.01}\\ &=250\end

(c) Further, we will sketch the graph of the function using the window 0≤t≤700 and 0≤p(t)≤700 as shown in the figure.

Hence, when the population P(t) (in thousands) of insects in t months after being transplanted by P(t)=(50(1+0.05t))/(2+0.01t) then the number of months until the insect population reaches 40 thousand 14.29 months and the limiting factor on the insect population is 250 thousand and the graph is shown in the figure.

Learn more about limiting factor from here brainly.com/question/18415071.

#SPJ1

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Events A and B are independent. The probability of A occurring is . The probability of B occurring is . What is P(A and B)?
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The probability of both A and B occurring is A×B
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On Tuesday, a coffee sho sold the following: 20 coffees for $2.85 each and 17 lattes f r $4.80 each, If the coffee shop had to p
almond37 [142]

Ok so to solve this problem we're going to need to find out how much money they made (their revenue) and the subtract the cost of paying the employees.

So, let's start by finding their revenue

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So the shop made $138.60 on Tuesday. Let's set that aside while we find out how much the shop's costs were.

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So the shop had to pay the employees $174.00 for working there.

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138.6 - 174 = -35.4

So the shop had a loss of $35.40 on Tuesday.


Hope that helps! Feel free to leave a comment or send me a message if I can clarify anything :)


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