What is 127 as a percent?

Use the mapping to determine which of the following are elements of the range.

Vadim26 [7]

Answer:

The elements of the range are the birthdays.

Step-by-step explanation:

A function is a distinct sort of relation in which each element of the domain is combined with precisely one element in the range. A mapping displays how the elements are combined.

A mapping figure comprises of two parallel columns. The 1st column signifies the domain of a function, and the other column for its range.

Lines or arrows are drawn from domain to range, to signify the relation between any two elements.

A function denoted by the mapping, in which each element of the range is combined with accurately one element of the domain is called one-to-one mapping.

From the diagram provided it is clear that the function denoted by the mapping is an one-to-one mapping.

The elements of the range are:

Birthday : {January 5 , January 7 , February 24 , March 1 , April 7 , May 30 , July 20 , August 1 , November 13 , November 26 }

Thus, the elements of the range are the birthdays.

6 0

3 years ago

20.8 divided by 100 how is the decimal point moved

alukav5142 [94]

Answer:

Two points to the left

Step-by-step explanation:

20.8/100 = 0.208

The number was 20.8, but now the new number moved

1. 2.08

2. 0.208

So my answer is two decimal points to the left.

I hope this helped!

6 0

2 years ago

Describe how you would plot a line that has a starting point at (2,-3) and a slope of 3/4

Nadya [2.5K]

You put the first cross on (2,-3) then go 3 to the right and 4 up. If it was a negative 3 you would go to the left. Negative 4 you would go down.

6 0

3 years ago

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

2 years ago

the height of a stack of books ,h inches,is directly proportional to the number of books, n.Tbe height of a stack of 10 books is

kotegsom [21]

Step 1

$\begin{gathered} \text{Height(h)}\propto number\text{ of books(n)} \\ H\propto n \\ \text{Adding k the constant of proportionality} \\ H\text{ = kn} \\ k=\frac{H}{n} \end{gathered}$

Step 2

A)Find the constant of proportionality K when n = 10 books and h = 12 inches

$k=\frac{12}{10}=1.2$

Step 3

B) Write an equation that relates H and n by substituting for k

$H=1.2n$

Step 4

C) Find the height, H of the stack of 24 books

$\begin{gathered} H\text{ }=\text{ 1.2 }\times24 \\ H=28.8\text{inches} \end{gathered}$

8 0

11 months ago