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Juli2301 [7.4K]
3 years ago
15

Yani has a box of pencils: 5 pencils are green, 12 are brown, 6 are yellow, and 4 are blue. If he selects a pencil at random, wh

ich color pencil would he be least likely to select?
Mathematics
1 answer:
dexar [7]3 years ago
8 0
It would be blue I believe
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What is greater 3/8 or 3/4?
blondinia [14]
Hi There Mama,

<span>What is greater 3/8 or 3/4?

</span>\frac{3}{4} will be greater than \frac{3}{8}!

Example:Think of it as pieces of pie. One pie is cut evenly into 4 pieces, and three of them are still there. (this is 75% of the pie)the other one is cut into 8, twice as many cuts as the other pie, yet has 3 small pieces. 3/8 has less than half the pie left....
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What property is 4x + 40 - 40 = 16 - 40
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The photo show how to solve the equation. Also you can use calculator to solve the problem. The easiest way of doing this is using a scientific calculator then use shift solve method for the ans

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A sample of a radioactive isotope had an initial mass of 360 mg in the year 1998 and
RUDIKE [14]

Answer:

193 mg

Step-by-step explanation:

Exponential decay formula:

  • A_t = A_0e^r^t
  • where Aₜ = mass at time t, A₀ = mass at time 0,  r = decay constant (rate), t = time  

Our known variables are:

  • 1998 to the year 2004 is a total of t = 6 years.
  • The sample of radioactive isotope has an initial mass of A₀ = 360 mg at time 0 and a mass of Aₜ = 270 mg at time t.

Let's solve for the decay constant of this sample.

  • 270=360e^-^r^(^6^)
  • 270=360e^-^6^r
  • \frac{3}{4} =e^-^6^r
  • \text{ln} (\frac{3}{4} )= \text{ln}(e^-^6^r)
  • \text{ln} (\frac{3}{4} )=-6r
  • r=-\frac{\text{ln}\frac{3}{4} }{6}
  • r=0.04794701

Using our new variables, we can now solve for Aₜ at t = 7 years, since we go from 2004 to 2011.

Our new initial mass is A₀ = 270 mg. We solved for the decay constant, r = 0.04794701.

  • A_t=270e^-^(^0^.^0^4^7^9^4^8^0^1^)^(^7^)
  • A_t=270e^-^0^.^3^3^5^6^2^9^0^7
  • A_t=193.01982213

The expected mass of the sample in the year 2011 would be 193 mg.

3 0
3 years ago
Malloree wants to calculate the cost of keeping her hot tub heated to a constant temperature. Her hot tub is a square 7 feet on
djyliett [7]
It’s a square so it means you have to multiply 7*7*2.75 to get 134.75
Multiply that by 7.5 because one cubic foot holds 7.5 gallons
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30.318
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$30.32 is the answer
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I need the answer to the clue/message not the MATH which requires you to do math
iVinArrow [24]

Answer:

HE WAS LAST SEEN HEADING NORTH

Step-by-step explanation:

360: A

25×10×40 = 10000: I

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3168/(22×9) = 16: N

cuberoot(64) = 4: R

6.5×15×8.5 = 828.75: G

4×2×3 = 24: E

3885/(18.5×15) = 14: H

3³ = 27: T

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30×20×11 = 6600: D

3600/(2×4÷5) = 90: O

6 0
3 years ago
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