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morpeh [17]
2 years ago
7

Plutonium-240 decays according to the function e(t)=Q e-k where 0 represents the quantity remaining after t years and k is the d

ecay constant, 0.00011... To the nearest 10 years, how long will it take 27 grams of plutonium-240 to decay to 9 grams? A. 1.44 years B. 2,100 years C. 9,990 years D. 18,900 years​
Mathematics
1 answer:
Grace [21]2 years ago
7 0

Answer: 9,990

Step-by-step explanation:

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A rule of thumb for estimating the size of a crowd is that 2 people take up
Leno4ka [110]

Answer:

120 people

Step-by-step explanation:

Length of dance floor = 30 ft

Width of dance floor = 20 ft

Given that 2 people will occupy 5 ft² of space, the number of people that will crowd the floor of the dance floor is calculated as follows:

= Area of dance floor ÷ 5 ft²

= (30*20) ÷ 5

= 600 ÷ 5

= 120.

120 people will crowd the dance floor.

8 0
3 years ago
Determine whether a triangle can be formed with the given side lengths. If the side lengths
scoundrel [369]

Answer:

it can't form isosceles triangle cause any two sides of the triangle are not equal ,it can't form equalateral triangle cause 3 sides of the triangle are not equal and neither right angle triangle so triangle can't be formed

7 0
3 years ago
Need an explanation on number 44 to why E is correct
aliina [53]

Before we can make sure that E is correct, we need to make the denominator is equal with questions and the choices or convert into decimal.

2/3 = 0.66

1/3=0.33

1/5=0.2

2/6=1/3 = 0.33

1/2 = 0.5

7/10 = 0.7

7/9 = 0.77

The question is :

2/3 < x < 7/9

0.66 < x < 0.77

We need to divide into 2 parts :

0.66 < x

x < 0.77

So we need to find the answer that x is greater that 0.66 and we got 7/10. And 7/10 is less than 7/9.

Hope this helps. Please ask if you don't understand.

6 0
3 years ago
I need these questions to be answered correctly plz tryna get my grade up
Reil [10]

Answer:

1. 81

2. 4 (square root of) 25^3

3. 30 (square root of) 10

6 0
2 years ago
The order from least to greatest
Temka [501]
0.06, 1/10, 0.18, 0.2, 0.25, 0.75, 4/5, and 4/4
3 0
3 years ago
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