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Kruka [31]
3 years ago
7

Hi please help me solve this!!!

Mathematics
1 answer:
dezoksy [38]3 years ago
8 0

Answer: I think the answer might be the first option

Step-by-step explanation:

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Find the area of an equilateral triangle (regular 3-gon) with the given measurement.
olga nikolaevna [1]

The formula for finding the area of an equilateral triangle is

square root of 3 * (a^2/2)

a is the side length so in this case is 6

square root of 3 * (18)

the area is about 15.6

6 0
3 years ago
Reduce 20/60 to its lowest common denominator
Ulleksa [173]

Answer:

it is 1/4

Step-by-step explanation:

20/60=10/30=1/3

8 0
3 years ago
Read 2 more answers
the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years​
Yuliya22 [10]

Answer:  125 g

<u>Step-by-step explanation:</u>

A = P_o\cdot e^{kt}\\\\\text{First, use the given information to find k:}\\\\\bullet A=\dfrac{1}{2}P_o\\\\\bullet k = unknown\\\\\bullet t=29\text{ years}\\\\\dfrac{1}{2}P_o=P_o\cdot e^{k(29)}\\\\\\\dfrac{1}{2}=e^{k(29)}\qquad divided\ both\ sides\ by\ P_o\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=ln\bigg(e^{k(29)}\bigg)\qquad applied\ ln\ to\ both\ sides\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=29k\qquad simplified-ln\ and\ e\ cancel\ out\\\\\\\dfrac{ln\bigg(\dfrac{1}{2}\bigg)}{29}=k\qquad divided\ 29\ from\ both\ sides\\\\\\-0.0239=k

\text{Now, use the following in the equation to solve for A:}\\\\\bullet A=unknown\\\bullet P_o=500\\\bullet k=-0.0239\\\bullet t=58\text{ years}\\\\A=500\cdot e^{(-0.0239)(58)}\\\\.\quad=500\cdot e^{-1.386}\\\\.\quad=125

8 0
4 years ago
On a six-sided number cube, what is the probability that you will roll a number less than 4?
patriot [66]

Answer: 1/3

Step-by-step explanation:

Since greater than 4 is 2/3

6 0
3 years ago
Does anyone have the answers to Geometry B Unit 6: Surface Area and Volume, Lesson 10: Surface Area and Volume Unit Test? please
Mama L [17]

Hello everyone

Are you guys talking about the Lesson 10: Surface Area and Volume Unit Test unit 6: Surface Area and Volume test, i have the answers right here for all of you:

1) 17

2)Hexagon

3)95cm^2; 275cm^2

4)795m^2; 822m^2

5)2,205 in^2

6)770m^2

7)43.1cm

8)LA= 829.4ft^2; SA 1,209.5ft^2

9)593.9cm^3

10)43.35pim^3

11)2.1 in

12)528

13)850cm^3

14)115cm^2

15)3,054cm^3

16)2,158m^2

17)Yes 1:8

18)144m^2

19)4,712m^2

20)1,944cm^3

If you guys need help with anything else please feel free to ask !!!!, trust me those answer are all correct, if you have the same test as me, and same answers, like i put, those answers  will help you !.

                                                                                    ~By Naba~

8 0
3 years ago
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