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Vadim26 [7]
3 years ago
9

Solve by substitution: 4r + 5y = 2 y = 2x + 6

Mathematics
1 answer:
galina1969 [7]3 years ago
7 0
Answer: 1/4 so yeah
Explanation: I hope this helps you
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In an insect colony there are 270 insects after 9 days. If there were initially 80 insects how long will it take the population
Semenov [28]

Answer:

The time it will take the population to grow to 800 insects is 17 days.

Step-by-step explanation:

The growth function of the insects is exponential.

The exponential growth function is:

y=a(1+r)^{t}

Here,

<em>y</em> = final value

<em>a</em> = initial value

<em>r</em> = growth rate

<em>t</em> = time taken

It is provided that there were 270 insects after 9 days and initially there were 80 insects.

Compute the value of <em>r</em> as follows:

y=a(1+r)^{t}\\\\270=80(1+r)^{9}\\\\3.375=(1+r)^{9}\\\\\ln(3.375)=9\cdot \ln(1+r)\\\\0.135155=\ln(1+r)\\\\1+r=1.14471\\\\r=0.145

Now, compute the time it will take the population to grow to 800 insects as follows:

800=80(1+0.145)^{t}\\\\10=(1.145)^{t}\\\\\ln(10)=t\cdot \ln(1.145)\\\\t=17.00522\\\\t\approx 17

Thus, the time it will take the population to grow to 800 insects is 17 days.

7 0
3 years ago
Is the sum of a negative and positive number always negative
Semenov [28]

No because if you do -5+10= it equals positive 5 and not a negative number.

7 0
2 years ago
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Rasek [7]
Hey You!

32 / 8 = 4

4 × 7 = 28

20. ANSWER:

The fish swims 28 feet deep.

21. ANSWER:

Numerator;Denominator

22. ANSWER:

439 / 3 = 146.3333 repeat.

So, each individual computer costs more than each individual printer.

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3 years ago
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What is the exact volume of the cylinder?
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The Answer is A. 5070π in3

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a taxi begins at 4,-3 it travels 3 blocks west and 5 blocks north to pick up a customer. what are the customers coordinates
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1, 2

will be the customers cordinate
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