The answer would be:
C. 144in2
hope that helped
Answer: 129.33 g
Step-by-step explanation:
![$$Let $p=A \cdot e^{n t}$ \\$(p=$ present amount, $A=$ initial amount, $n=$ decay rate, $t=$ time)](https://tex.z-dn.net/?f=%24%24Let%20%24p%3DA%20%5Ccdot%20e%5E%7Bn%20t%7D%24%20%5C%5C%24%28p%3D%24%20present%20amount%2C%20%24A%3D%24%20initial%20amount%2C%20%24n%3D%24%20decay%20rate%2C%20%24t%3D%24%20time%29)
![\begin{aligned}&\Rightarrow \text { Given } p=\frac{A}{2} \ a t \ t=1590 \\&\Rightarrow \frac{1}{2}=e^{1590n} \Rightarrow n=\frac{\ln (1 / 2)}{1590}=-0.00043594162\end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%26%5CRightarrow%20%5Ctext%20%7B%20Given%20%7D%20p%3D%5Cfrac%7BA%7D%7B2%7D%20%5C%20a%20t%20%20%5C%20t%3D1590%20%5C%5C%26%5CRightarrow%20%5Cfrac%7B1%7D%7B2%7D%3De%5E%7B1590n%7D%20%5CRightarrow%20n%3D%5Cfrac%7B%5Cln%20%281%20%2F%202%29%7D%7B1590%7D%3D-0.00043594162%5Cend%7Baligned%7D)
![$$If $A=200 \mathrm{mg}$ and $t=1000$ then,$$\begin{aligned}P &=200 e^{\left(\frac{\ln \left(1/2\right)}{1590}\right) \cdot 1000} \text \\\\&=129.33 \text { grams}\end{aligned}$$](https://tex.z-dn.net/?f=%24%24If%20%24A%3D200%20%5Cmathrm%7Bmg%7D%24%20and%20%24t%3D1000%24%20then%2C%24%24%5Cbegin%7Baligned%7DP%20%26%3D200%20e%5E%7B%5Cleft%28%5Cfrac%7B%5Cln%20%5Cleft%281%2F2%5Cright%29%7D%7B1590%7D%5Cright%29%20%5Ccdot%201000%7D%20%5Ctext%20%5C%5C%5C%5C%26%3D129.33%20%5Ctext%20%7B%20grams%7D%5Cend%7Baligned%7D%24%24)
Answer:
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Step-by-step explanation:
jokeeeee hehe
Take 0.53 and 0.7 by 100 to make them percents. 0.53 times 100 is 53% and 0.7 time 100 is 70%. so 0.7>0.53
Answer:
5. 50.3 m²
6. 113.1 cm²
7. 102.1 yards²
8. 50.3 yards²
9. 452.2 ft²
10.379.8 ft²
Step-by-step explanation:
Area of a circle = nr²
The circumference of a circle = 2nr
n = pi = 22/7
r = radius
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
radius = diameter / 2
5. (22/7) x 4² = 50.3 m²
6. (22/7) x 6² =113.1 cm²
7. radius = 11.4/2 = 5.7 yards
(22/7) x 5.7² =102.1 yards²
8. radius = 8/2 = 4 yards
(22/7) x 4² = 50.3 yards²
9. 2nr = 75.4 yards
2 x (22/7) x r = 75.4
to find r, divide both sides of the equation by 2 and 7/22
r = 12 ft
Area = (22/7) x 12² = 452.2 ft²
10. 2nr = 69.1 yards
2 x (22/7) x r = 69.1
to find r, divide both sides of the equation by 2 and 7/22
r = 10.99 ft²
Area = (22/7) x 10.99² = 379.8 ft²
the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero