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Eduardwww [97]
3 years ago
5

Please help with number 25

Mathematics
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

I think its Damon has 64 stamps or  2^6 (2 to the power of 6)

Step-by-step explanation:

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A zoo has 15 emperor penguins The emperor penguins make up 30% of all the penguins at the zoo. How many penguins live at the zoo
r-ruslan [8.4K]

Let x + 15 = total penguins

15/ (x +15) = .30

15 = .30x + 4.5

.30x  = 10.5

x = 35

Total penguins = 15 + 35 = 50

Double Check

15 / 50 * 100 = 30%  Correct!!!


3 0
2 years ago
Complete the following statement.<br> alb and bic so a [?]<br> А<br> B<br> С<br> neither
marta [7]

Answer:

B option is right

Step-by-step explanation:

These 3 will form a 3d system.

6 0
2 years ago
Find a degree 3 polynomials with real coefficient having zeros 2 and 4i and a leading coefficient of 1. Write P in expanded form
Gelneren [198K]

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7 0
3 years ago
WILL mark brainliest!
Angelina_Jolie [31]

Answer:

  110.5348 minutes

Step-by-step explanation:

The difference from room temperature changes from 103 to 59 in 46 minutes, so that difference can be modeled by the exponential equation ...

  Δt = 103×(59/103)^(t/46)

We want to find t for the temperature difference Δt = 91 -64 = 27.

  27 = 103×(59/103)^(t/46)

  27/103 = (59/103)^(t/46) . . . . . divide by 103

Taking logs gives the linear equation ...

  log(27/103) = (t/46)log(59/103)

Multiplying by the inverse of the coefficient of t, we get ...

  t = 46·log(27/103)/log(59/103) ≈ 46·(-0.58147346)/(-0.24198521)

  ≈ 110.5347

It will take about 110.5347 minutes for the turkey to cool to 91 °F internally.

_____

<em>Comment on 4 decimal places</em>

An answer correct to 4 decimal places (7 significant digits) is a pretty good indication that the problem was worked correctly. However, that level of precision in the timing makes little sense in this context. Most thermometers will take at least a few seconds to register the temperature to within a tenth of a degree or so. This problem is asking for an answer that is within 6 milliseconds and 30 micro-degrees. Neither of these is anywhere near realistic for a kitchen meat thermometer.

More realistic would be an answer to 4 <em>significant figures</em>, a tenth of a minute and a few hundredths of a degree.

(The rate of change at the time of interest is about -0.33 degrees per minute.)

6 0
3 years ago
A model house is built on a base then measures 9 1/4 inch. Wide and 8 4/5 inch. Long. What is the total area of the model house'
Mrac [35]
The total area would be 9 1/4 multiplied by 8 4/5 which would equal 81.4 inches
6 0
2 years ago
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