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2 years ago

What statement regarding the diagram is true?

Mathematics

1 answer:

kumpel [21]2 years ago

8 0

I believe the second one right, because if I remember two opposite angles of an outside angle = the outside angle.

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The half-life of a certain radioactive substance is 65 days. There are 3.5 g present initially.

zimovet [89]

Answer:

r = 3.5 * .5^(t/65); around 117.5 days

Step-by-step explanation:

r = remaining substance

t = time in days

The half life is 65 day, meaning the .5 must be put to a power of t/65.

The initial substance was 3.5, which we must substitute in.

After using logarithms to solve our new equation, we are left with t=(about)117.5 days for there to be less than 1 gram of substance remaining.

6 0

2 years ago

Which of the division expressions below has a remainder? Select all that apply.

gavmur [86]

Answer:

A, B, C, & E

Step-by-step explanation:

A) 19,456 ÷ 6 = 3,242 $\frac{2}{3}$

(2/3 is 0.666666666 etc)

B) 28,765 ÷ 13 = 2,212.692308...

C) 4,145 ÷ 3 = 1,381 $\frac{2}{3}$

(2/3 is 0.666666666 etc)

D) 4,165 ÷ 17 = 245

(Not bolded because it is not an answer)

E) 44,312 ÷ 16 = 2,769.5

C -> When dividing by three, if the first number's values do not add up to a multiple of 3 there will be a remainder. Example from your problem,

4,145 -> 4 + 1 + 4 + 5 = 14 -> 14 is not a multiple of 3, so there is a reminder

D -> No decimal / fraction, no remainder!

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

8 0

2 years ago

225° transformarlos a radianes

nikdorinn [45]

Step-by-step explanation:

$225 \times \frac{\pi}{180} = 3.927 \: radianes$

5 0

2 years ago

What are the horizontal asymptotes of the function f of x equals the quotient of the square root of the quantity x squared plus

aliya0001 [1]

Given the function

$\dfrac{\sqrt{x^2+1}}{x}$

The two points concerning the domain are:

The content of a square root must be non-negative
The denominator can't be zero

Nevertheless, the content of the square root is $x^2+1$ , which is always positive, so it's not a problem.

The denominator, which is x, can't be zero, so we can't have $x = 0$

So, the domain of the function is

$D = \{ x \in \mathbb{R}:\ x \neq 0\}$

7 0

2 years ago

3x+2y If x=5 and y=2

aev [14]

Plug in the x & y
then multiply
then add
3(5)+2(2)
15+4
19

6 0

2 years ago

Read 2 more answers