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2 years ago

Brian rolls a fair dice 12 times. How many times would Brian expect to roll a number greater than 4?

Mathematics

1 answer:

igor_vitrenko [27]2 years ago

5 0

Answer:

Numbers greater than 4 are 5 and 6

So we have 2 numbers out of 6 numbers so the probability is equal to 2/6 = 1/3

And 1/3 of 12 is equal to 4

So Brian expect to roll a number greater than 4,

Four times.

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Solve this problem. Find the number of gallons of paint needed to cover all four sides four sides) of the building shown with tw

liraira [26]

The complete question in the figure attached

1) calculate the area all four sides
A=[12+9+12+9]*8=336 ft²

if 1 gallons---------------------------- > covers 350 ft²
X------------------------------------ > 336 ft²
X=336/350=0.96 gallons
but remember
that there are two coats of paint
therefore
0.96*2----------- > 1.92------- > 2 gallons

the answer is 2 gallons

7 0

3 years ago

Read 2 more answers

Calculate the number of acres required to produce 1,000 gallons of oil in one year from microalgae and soybeans. Which one (micr

Inessa05 [86]

Answer:

microalgae required less space.

Step-by-step explanation:

Amount of oil to be produced = 1,000 gallons

Now,

We know

10,000 gallons of oil is extracted from the miroalgae per acre per year

and,

From soyabeans the oil extracted = 50 gallons per acre per year

therefore,

To produce 1,000 gallons number of acres required by microalgae

= [ Amount of oil to be produced ] ÷ [ oil extracted per acre from microalgae]

= 1,000 ÷ 10,000

= 0.1 acres

similarly

To produce 1,000 gallons number of acres required by soyabeans

= [ Amount of oil to be produced ] ÷ [ oil extracted per acre from soyabeans]

= 1,000 ÷ 50

= 20 acres

hence,

microalgae required less space.

7 0

3 years ago

How do you tell if a number is irrational or rational?

Korvikt [17]

A rational number is any number that can be expressed as a fraction
(ex: -5/2, 4 1/7, and 8/13)

An irrational number is any number that cannot be expressed as a fraction; a non-repeating, non-terminating decimal (ex: pi, 0.121231234...)

Hope this helps! :)

6 0

2 years ago

Help i dont understand this

Igoryamba

I’m not extremely good at math but I think you need to make -x-y=1 into y=mx+b form and then solve your new equation!

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3 years ago

Solve the simultaneous equations: 5x+4y=5 2x+7y=29

OLga [1]

Answer:

x=−3 and y=5

Step-by-step explanation:

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2 years ago