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2 years ago

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Mathematics

2 answers:

Zepler [3.9K]2 years ago

4 0

It took 12 days for all the 60 gallons of water to leak out of the barrel. If you divide 60 by 5 you will get 12.

babunello [35]2 years ago

3 0

Answer:

36 days

Step-by-step explanation:

1.)60 / 5=12

2.)12*3=36

It will take 36 days for the barrel to empty out all 60 gallons of water

Hope this answers your question

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4. Katy sells new video games at a gaming store. Katy gets a bonus if she sells more than 60 video games. If 8 people each buy 7

Natasha2012 [34]

8 people each buy 7 so, 8 x 7 = 56
She needs to sell 60:
60 - 56 = 4
Katy is 4 away from selling 60.

5 0

2 years ago

PLEASE HELP!

Wittaler [7]

Answer:

See below

Step-by-step explanation:

Use the formulae directly

For a cone, with base radius = r and height = h, here are the related formula

$\textrm{Slant height l} = \sqrt{r^2 + h^2}$ (1)

$\textrm{Lateral surface area} = \pi r l$

$\textrm {Base area} = \pi r^2$

$\textrm { Total Surface Area SA} = \textrm{Base Area + Lateral Area} = \pi r^2 + \pi rl = \pi r(r + l)$ (2)

$\textrm{Volume V = } (1/3) \pi r^2h$ (3)

Therefore directly plugging in the numbers in the above equations:

Note:

l = slant height in cm
SA = total surface area in sqcm
V = Volume in cubic cm

Figure(a)

r = 4, h = 8

$\textrm{l} = \sqrt{4^2 + 8^2} =\sqrt{80} = 8.944 \\\textrm{SA} = 4\pi(4 + 8.944) = 4\pi(12.944) = 162.66\\\textrm{V} = (1/3)\pi(4^2)(8) = 134.04$

Figure(b)

r = 7, h =15

$\textrm{l} = \sqrt{7^2 + 15^2} =\sqrt{274} = 16.55$

$\textrm{SA} = 7\pi(7 + 16.55) = 517.89$

Figure (c)

r = 5, l = 8

$h = \sqrt{l^2 - r^2} = \sqrt{8^2 - 5^2} = \sqrt{39} = 6.245\\SA = \textrm{SA} = 5\pi(5 + 8) = 204.2\\V = (1/3)\pi(5^2)(6.245) = 163.5$

6 0

1 year ago

. The equation = can be used to find how many hours h a person needs to work to earn $200 at $8 per hour. How many hours does a

Rainbow [258]

Answer:

0.04 h

Step-by-step explanation:

The given equation is :

8h=200

It is used to find hours h a person needs to work to earn $200 at $8 per hour.

We need to find no of hours does a person need to work to earn $200. It can be calculated as follows :

$\dfrac{8h}{200}=\dfrac{200}{200}\\\\h = 0.04\ h$

So, for $200, the person will need 0.04 h.

5 0

2 years ago

Please help quickly as possible please

zheka24 [161]

First we need to establish the fact that angles on a straight line ALWYS add up to 180
So, we solve the equation for x which turns out to be 3
But,were not done. The question asks us to find the value of the angle BOC
so we substitute the value of x into the equation for BOC (which is 6x+29)
And then your answer is 47 degrees

7 0

2 years ago

4x+1=9+4y please help me solve for x please show step by step I’m very confused

Inessa05 [86]

Answer:

Step-by-step explanation:

First of all, you would combine like terms, giving you 4x - 4y + 1 = 9.

Next, subtract the numbers, which gives you 4x - 4y = 8.

Finally, divide both sides by 4, which will come to the conclusion of x - y = 2, the simplest form of which this equation can be broken down to.

7 0

2 years ago

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