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Marina86 [1]
3 years ago
15

I really will appreciate it if someone helped me on problem 8

Mathematics
1 answer:
miskamm [114]3 years ago
8 0
ET/IS = TN/SX => 4/1.5 = 10/ a => 4 a = 15 => a =15/4 = 3.75
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The sum of 4 consecutive integers is 326. What is the second number in this sequence?
Fynjy0 [20]

Answer:

x + (x+1) + (x +2) + (x +3) = 326

4x + 6 = 326

4x = 320

x = 80

The second number would be 81


Step-by-step explanation:


5 0
3 years ago
The table shows the estimated number of bees, y, in a hive x days after a pesticide is released near the hive.
Oksana_A [137]

Answer:

<h2>A.</h2>

Step-by-step explanation:

The given table is

Days     Bees

  0        10,000

 10        7,500

 20       5,600

 30       4,200

 40       3,200

 50       2,400

Where x represents days and y represents bees.

The exponential function that models this problem must be like

y=a(1-r)^{x}, which represenst an exponential decary, because in this case, the number of bees decays.

We nned to use one points, to find the rate of decay. We know that a=10,000, because it starts with 10,000 bees.

Let's use the points (10, 7500)

y=a(1-r)^{x}\\7500=10000(1-r)^{10}

Solving for r, we have

\frac{7500}{10000}=(1-r)^{10} \\(1-r)^{10} =0.75

Using logarithms, we have

ln((1-r)^{10}) =ln(0.75)\\10 \times ln(1-r)=ln(0.75)\\ln(1-r)=\frac{ln(0.75)}{10} \approx -0.03\\e^{ln(1-r)}=e^{-0.03}\\1-r =e^{-0.03}\\r=-e^{-0.03}+1 \approx 1.97

Replacing all values in the model, we have

y=10000(1-1.97)^{x}\\y=10000(0.97)^{x}

Therefore, the right answer is the first choice, that's the best approximation to this situation.

6 0
2 years ago
Read 2 more answers
John and Jane went to a bakery to get cookies for a party. Jane bought x cookies that were $3 each. John bought x cookies that w
Natasha2012 [34]

Answer:

They spent $15.

Step-by-step explanation:

It's given that Jane bought x cookies, so 3x.

John spent $1 on each of the x cookies he got, and also an extra $10, so x+10.

3x=x+10

2x=10

x=5

So they got 5 cookies each.

5 cookies x $3= $15 (check with $5(1)+$10= $5+$10= $15 )

3 0
2 years ago
Please answer <br> Who is wrong and why
Marysya12 [62]

Answer:

Hi I have to tell you But I also use Flvs Open lesson 01.07 and read it I promise you will find something of how to do it because I had the same prob and after reading the lesson and awnsering the quetion  I GOT A 100 hope i help you

Step-by-step explanation:

6 0
2 years ago
compounds are pure substances. What other substances are considered pure substances? A: chemical reactions B: elements C: mixtur
saul85 [17]

Answer:

Step-by-step explanation:

B

8 0
2 years ago
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