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Serga [27]
3 years ago
5

Help me pls pls pls i really need help

Mathematics
1 answer:
Monica [59]3 years ago
8 0
The answer is A..... 2 2/3
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Venessa has a piggy bank that contains a collection of nickels, pennies, dimes and quarters. She randomly draws a coin out of th
Tamiku [17]

Answer:

58

Step-by-step explanation:

Coins Number of Drawsnickel 32penny 54dime 13quarter 29Total Number of Draws = 32 + 54  + 13 + 29 = 128Probability of Quarter drawn = 29/128the number of times a quarter would be drawn if Venessa draws a coin 256 times  = (29/128)  * 256= 29 *2= 58 option B is the right answer

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3 years ago
Write down the equation of the line marked A
Andrew [12]

Answer:

you didnt imput a pic :/

Step-by-step explanation:

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3 years ago
Strontium-90 has a half-life of 28.8 years. If you start with a 300-gram sample of strontium-90,
Kazeer [188]

Answer:  2.66 × 10⁻¹³

<u>Step-by-step explanation:</u>

First, use the decay formula   A=A_oe^{kt}   where

  • A is the final amount (amount left)
  • A₀ is the initial amount (amount you started with)
  • k is the rate of decay (you need to solve for this)
  • t is the time

Given:

  • A = 1/2(300) = 150
  • A₀ = 300
  • k = unknown
  • t = 28.8

150=300e^{28.8k}\\\\0.5=e^{28.8k}\\\\ln(0.5)=ln(e^{28.8k})\\\\ln(0.5)=28.8k\\\\\\\dfrac{ln(0.5)}{28.8}=k\\\\\\\large\boxed{-0.0240676=k}\\

Next, input the k-value and the new t-value to solve for A.

  • A = unknown
  • A₀ = 300
  • k = -0.0240676
  • t = 1440

A=300e^{1440(-.0240676)}\\\\\large\boxed{A=2.66\times 10^{-13}}\\

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4 years ago
Question VVVVVVVVVVVVVVVVVVVVVVVVVVVV
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Answer:

  {x| x≤ 1/2 or x ≥ 3/4}

Step-by-step explanation:

The values of x that make the factors zero are 3/4 and 1/2. The product of these factors will be positive when both factors are negative (for x < 1/2) or when both factors are positive (x > 3/4). The matching answer selection is the third one.

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3 years ago
The graph shows the amount of savings over time in
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Lana is saving at the greater rate.

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3 years ago
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