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3 years ago

Factorie a3b3-9a2b2+20ab

Mathematics

1 answer:

Lesechka [4]3 years ago

3 0

Answer:

ABCDEFGHIJKLMNOPQRSTUFWTYZ

Step-by-step explanation:

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The half-life of silicon-32 is 710 years. If 30 grams is present now, how much will be present in 300 years? Round answer to thr

kupik [55]

Answer: 55.668 grams

General equation of exponential decay/growth:

N = Noe^(kt)

50 = 100e^(710k)

.5 = e^(710k)

ln(.5) = 710k

ln(.5)/710 = k

Therefore, our equation is now:

N = 100e^((ln(.5)/710)t)

Now, we substitute t with 600:

N = 100e^(ln(.5)/710)600

N = 100e^(-.585758)

N = 100(.556684)

N = 55.668 grams

8 0

3 years ago

3. His teacher praised him.

balandron [24]

What’s the question

8 0

3 years ago

PLEASE HELP 50 points

hoa [83]

Answer:

r > 7 (C)

Step-by-step explanation:

3r−7>14

Step 1: Add 7 to both sides.

3r−7+7>14+7

3r>21

Step 2: Divide both sides by 3.

r>7

Hope this helps and makes sense!! Good luck and have a wonderful day! <33

Imagine this < as a alligater and itś eating the greater number!!

8 0

3 years ago

Read 2 more answers

Of the 423 students entering as freshmen at a small liberal arts school, 1 out of 3 will be participating in

Allisa [31]

Answer:

About 141 students would attend.

Step-by-step explanation:

423/3=141

4 0

1 year ago

A TV screen is 41 cm long and 31 cm high. The length of the diagonal is closest to: A) 49 cm Eliminate B) 51 cm C) 54 cm D) 48 c

GuDViN [60]

Answer:

The length of the diagonal is closest to 51 cm.

Step-by-step explanation:

Given:

TV screen is 41 cm long and 31 cm high.

Now, to find the length of the diagonal.

By using pythagorean theorem:

leg 1 = 41 cm, leg 2 = 31 cm.

Let the hypotenuse be $x$ .

(leg 1)² + (leg 2)² = hypotenuse²

$41^{2} +31^{2}=x^{2}$

⇒ $1681+961=x^{2}$

⇒ $2642=x^{2}$

Using square root on both sides we get:

⇒ $51.40=x$

So, the length of the diagonal = 51.40 cm.

By rounding off of 51.40cm it becomes 51 cm.

Therefore, the length of the diagonal is closest to 51 cm.

7 0

3 years ago