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k0ka [10]
3 years ago
10

What's the radius for r=13 mm?

Mathematics
1 answer:
Law Incorporation [45]3 years ago
3 0

Step-by-step explanation:

14 mm³ because the radius is this

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According to your model, as the population of San Francisco was revitalizing, for what value of the independent variable t did i
vampirchik [111]

Answer:

  t =1.453 decades from 1980 i.e in year 1994.5

Step-by-step explanation:

Given:

- Population @ year 1980 P = 678.97 thousands.

- Population @ year 2000 P = 776.73 thousands.

- The rate of increase is linear - constant rate.

Find:

As the population of San Francisco was revitalizing, for what value of the independent variable t did it reach 750 thousand ?

Solution:

- Develop an expression of population P as a function of time t in decades elapsed from year 1980 on-wards

- The linear expression can take a form of :

                                      P(t) = m*t + C

- Where, m is the rate of increase.

              C is the initial population.

- Formulate m:

                                       m = (776.73 - 678.97) / 2 = 48.88

- Formulate C:

                                       C = P (@ 1980) = 678.97

- Evaluate P(t) = 750:

                                       P(t) = 48.8*t + 678.97

                                       750 = 48.8*t + 678.97

                                       t = 71.03/48.8

                                      t =1.453 decades

5 0
4 years ago
The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as , where a
Andrej [43]
The loudness in decibels is
L = log₁₀(I/I₀)
where
I  = sound intensity, W/m^2
I₀ = reference intensity, = 10^(-12) W/m^2

Raja's power level is 10^(-7) W, therefore the decibel value is
L = 10 log₁₀(10^(-7)/10^(-12))
   = 10log₁₀10^5 
   = 10*5
  = 50 dB

Answer:  50 dB
7 0
4 years ago
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An experiment consists of drawing 1 card from a standard​ 52-card deck. what is the probability of drawing a queenqueen​
Vaselesa [24]
Total number of cards in the deck = 52
Total number of queens = 4

P(Queen) = 4/52 = 1/13

Answer: 1/13
6 0
4 years ago
Please help 50 points mark brainliest
Anton [14]

y=∣x−1∣={

1−x

x−1

x<1

x≥1

}

Similarly y=3−∣x∣={

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The required region is a rectangle with length 2

2

and breadth

2

.

Hence, the area is 4. Hence, all the options are correct

8 0
3 years ago
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A piggy bank contains the same number of quarters, nickels, and dimes. the coins total $4.40. how many of each type of coin does
mestny [16]
Let the number of each coin be n.

The total sum of these coins is $4.40. So we can write:

n Nickles + n Dimes + n Quarters = 4.40

0.05n + 0.10n + 0.25n = 4.40

0.40n = 4.40

n = 11

So this means, there are 11 coins of each type. 

5 0
3 years ago
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