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Triss [41]
3 years ago
11

HELP QUICK PLS!!!

Mathematics
1 answer:
Tomtit [17]3 years ago
5 0

Answer:

A

Step-by-step explanation:

The lateral surface area is given by pi*r*l, we can use trigonometry to find l. 8*sqrt(3)/l=sin(60), l=16 and r is given by tan(60)=8*sqrt(3)/r, r=8. The lateral surface area is 16*8*pi=128*pi

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Rick is setting up a modle train that is 5 3-5 feet long No telephone pole is needed at the start of track however along the tra
pshichka [43]

Answer: He needs 7 telephone poles.

Step-by-step explanation:

Length of train track = 5\dfrac{3}{5}\  feet

=\dfrac{5\times5+3}{5}\ feet\\\\=\dfrac{25+3}{5}\ feet\\\\=\dfrac{28}{5}\ feet

Distance between two telephone pole = \dfrac45\ foot

Now, Number of telephone poles = (Length of train track) ÷ (Distance between two telephone pole)

=\dfrac{28}{5}\div \dfrac45\\\\=\dfrac{28}{5}\times \dfrac54\\\\=\dfrac{28}{4}=7

So, he needs 7 telephone poles.

6 0
3 years ago
If you're good at math, explain this.
Vaselesa [24]

Answer:

I think your correct :)

Step-by-step explanation:

Yess okay I was clicking "add answer" for like a thousand times :D

anywayssss....

I agree with your first 2 answers and it might be a glitch cause that's how it was with my last school years online quizzes but I'm not positively sure about your third answer cause I haven't done the work yet... just make sure you took all the numbers and added them together then divided them by 8 cause there's 8 groups.

ngl I cant tell you what's wrong with the second question so I'm thinking somethings wrong with the coding but alrighty...

<3 Enjoy,

    Dea

8 0
3 years ago
6,000,000+80,000+10 IN STANDARD FORM 
romanna [79]
6,080,010 is the standard form.
6 0
4 years ago
How do you simplify 2(1/2x)-1 Step by step
TiliK225 [7]

Answer:

1x - 1

Step-by-step explanation:

So first you distribute; and that should give you 1x - 1

4 0
4 years ago
One year, the population of a city was 130,000. Several years later it was 135,200.
SSSSS [86.1K]

Answer:

Increase in percent = 4%

Step-by-step explanation:

Given:

Present population = 130,000

Future population = 135,200

Find:

Increase in percent

Computation:

Increase in population = Future population - Present population

Increase in population = 135,200 - 130,000

Increase in population = 5,200

Increase in percent = [Increase in population / Present population]100

Increase in percent = [5,200/130,000] 100

Increase in percent = 4%

6 0
3 years ago
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