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DiKsa [7]
3 years ago
7

15 Points! (2 Questions)

Mathematics
1 answer:
ser-zykov [4K]3 years ago
7 0

Answer:

Find the common denominator

Step-by-step explanation:

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True or False: The following equation is in standard form: 3x - 4y = 7 - 2x.
alexira [117]

Answer: False. here is standard form; 5x − 4y = 7

Step-by-step explanation:

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2 years ago
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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
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If you have 1 diomand and you add 1000 how many do you have?
Svetach [21]

Answer:

1001

Step-by-step explanation:


5 0
3 years ago
SUPER EASY*** answer for good luck
olga nikolaevna [1]

Answer:

*SUPER EASY* asks people for the answer

uhm I'd say a and maybe d

5 0
2 years ago
the sum of 2 positive integers is 10. the difference of their reciprocals is 3/8. find both positive integers
Elena-2011 [213]

Answer:

The 2 integers would be: 2 and 8

Step-by-step explanation:

2 + 8 = 10

Reciprocal of 2: 1/2

Reciprocal of 8: 1/8

1 / 2 - 1 / 8 = 4/8 - 1/8 = <u>3/8</u>

4 0
2 years ago
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