3 years ago

Write the numeral and the position the underline digits represent 645

Mathematics

1 answer:

Sophie [7]3 years ago

5 0

The answer in my opinion would be 6.450

You might be interested in

Beth needs 16 cups of milk to make mango milk shakes for her friends. If 1 pint is equal to 2 cups, how many pints of milk shoul

vampirchik [111]

They will need 8 cups/pints for the milk shakes

3 0

3 years ago

element X is a radioactive isotope such that every 21 years, its mass decreases by half. Given that the initial mass of a sample

pashok25 [27]

Answer:

The percentage rate of decay per year is of 3.25%.

The function showing the mass of the sample remaining after t is $A(t) = 80(0.9675)^t$

Step-by-step explanation:

Equation for decay of substance:

The equation that models the amount of a decaying substance after t years is given by:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Every 21 years, its mass decreases by half.

This means that $A(21) = 0.5A(0)$ . We use this to find r, the percentage rate of decay per year.

$A(t) = A(0)(1-r)^t$

$0.5A(0) = A(0)(1-r)^{21}$

$(1-r)^{21} = 0.5$

$\sqrt[21]{(1-r)^{21}} = \sqrt[21]{0.5}$

$1 - r = 0.5^{\frac{1}{21}}$

$1 - r = 0.9675$

$r = 1 - 0.9675 = 0.0325$

The percentage rate of decay per year is of 3.25%.

Given that the initial mass of a sample of Element X is 80 grams.

This means that $A(0) = 80$

The equation is:

$A(t) = A(0)(1-r)^t$

$A(t) = 80(1-0.0325)^t$

$A(t) = 80(0.9675)^t$

The function showing the mass of the sample remaining after t is $A(t) = 80(0.9675)^t$

8 0

3 years ago

Read 2 more answers

Read the complete problem before answering. Maxwell has cups of chocolate chips. He needs to divide them evenly into 7 different

pashok25 [27]

I Would Say Yes, But Did You Show Your Work ? The Answer , [ By The Way ] ! Is [ D ] Cups

3 0

4 years ago

Find the value of each of the following. (a) 6 1/5 of 1.35 ml

Nana76 [90]

Answer:

Yannnnn po answer ◉‿◉｡◕‿◕｡◉‿◉｡◕‿◕｡◉‿◉｡◕‿◕｡◉‿◉

6 0

2 years ago

Hhhhhheeeeeeeeeeelllllllppppppp

11Alexandr11 [23.1K]

Answer: Last answer

Step-by-step explanation:

3 0

3 years ago