Number 30, please help

Mathematics

2 answers:

Korvikt [17]3 years ago

7 0

Answer:

correct

Step-by-step explanation:

dhhehenenrrdiie

GREYUIT [131]3 years ago

3 0

Answer:

correct

Step-by-step explanation:

Imagine a point in the top left quadrant of a graph

when you rotate it 180 degrees it will end up in the bottom right quadrant

The same will apply if you flip on the y axis and the x axis in no given order

You might be interested in

A 6-sided die is rolled. what is the probability of rolling a number less than 4?

ohaa [14]

1/2

Step-by-step explanation:

All outcomes of a single die= 6

Events less than 4 =3

probability=3/6

=1/2

7 0

2 years ago

1.Arsenic-74 is used to locate brain tumors. It has a half-life of 17.5 days. 90 mg wereused in a procedure. Write an equation t

Sophie [7]

$1)\text{ }N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) 5.625 mg will be left

Explanation:

1) Half-life = 17.5 days

initial amount of Arsenic-74 = 90 mg

To get the equation, we will use the equation of half-life:

$\begin{gathered} N_t\text{ = N}_0(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}} \\ where\text{ N}_t\text{ = amount remaining} \\ N_0\text{ = initial amount} \\ t_{\frac{1}{2}\text{ }}\text{ = half-life} \end{gathered}$ $N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) we need to find the remaining amount of Arsenic-74 after 70 days

t = 70