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3 years ago

An unbiased cubic die has numbers 1 to 6 inscribed on each side. on average, how many rolls will you need in order to get a 6?

Mathematics

1 answer:

GaryK [48]3 years ago

4 0

(5/6)^x < 0.5
x = ceiling( log(0.5) / log(5/6) )
<span>x = 4

Here I worked it out, hopefully this helps :)

</span>

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Find the perimeter of given figure:

Afina-wow [57]

Answer:

≈ 18 cm

Step-by-step explanation:

1. Find the length of half a circle of radius 3.5 cm:

$\tt \cfrac{C}{2}= \cfrac{2\pi r}{2}=\pi r=3.14\cdot3.5=10.99 \ cm$

2. Find the length of the diameter:

D = 2r = 2 · 3.5 = 7 cm

3. Find the perimeter of the figure:

P = 10.99 + 7 = 17.99 ≈ 18 cm

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2 years ago

Ann went to the store. She bought a book for $4.00, pencils for $2.00, and a notebook for $3.00. What is her change if she paid

agasfer [191]

Answer:

$11 is her change

Step-by-step explanation:

This is a simple adding and subtracing problem.

What we first do is add up 4+2+3=9 then we subtract 9 from 20 which gives us $11

We can check our answer by add up 11 + 9 to see if it equals to 20

8 0

2 years ago

Read 2 more answers

alan is spreading fertilizer on a field to get it ready for planting. The directions say to use 4/5 of a quart of fertilizer for

Ostrovityanka [42]

Answer:

48.6 quart of fertilizer

Step-by-step explanation:

The directions say to use 4/5 of a quart of fertilizer for each acre of land.

Alan has two fields,

Field 1

22 1/2 acre of land

1 acre of land = 4/5 quart

22 1/2 acre of land = x

Cross Multiply

x = 22 1/2 × 4/5

x = 45/2 × 4/5

x = 18 quart of fertilizer

Field 2

38 1/4 acres of land

1 acre of land = 4/5 quart

38 1/4 acre of land = x

Cross Multiply

x = 38 1/4 × 4/5

x = 153/4 × 4/5

x = 30.6 quart of fertilizer

The total fertilizer that Alan will need for his two fields is calculated as:

18 quart of fertilizer + 30.6 quart of fertilizer

= 48.6 quart of fertilizer

7 0

2 years ago

Find all values of x where f(x)=0

dmitriy555 [2]

Answer:

I think x has no value in that function

Step-by-step explanation:

6 0

2 years ago

Vincent began his weekly chores on Saturday morning at 11:20 A.M. He finished 1 hour and 25 minutes later.

BigorU [14]

12:45 would be when he finished chores

3 0

2 years ago