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Zolol [24]
3 years ago
10

Please someone help me

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0
1.
1/4 is less then 2/4 or 1/2so if the denominator is equal it will be easier to multiply
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The figure shows a cylinder of diameter 12cm and height = 15cm. A hole in the shape of cone is bored into one of its end. If the
Lisa [10]

Answer:

\bold{495\pi} \approx \bold{1555.088 cm^3}

Step-by-step explanation:

There was no figure but the question is clear

Volume of a cylinder is given by the formula \bold{\pi r^2h}\\

where r is radius of base of cylinder, h is the height

Volume of a cone is given by \bold{\frac{1}{3} \pi r^2 h}

where r is the radius of base of cone, h is the height

The radius of the cylinder = \frac{1}{2}(diameter) = \frac{1}{2}(12) = 6cm

Height of cylinder = 15cm

Volume of cylinder V_{cyl} = \pi (6)^2  15 = \pi (36)15 = \bold{540\pi}

Radius of cone = \frac{1}{2} (radius of cylinder) = \frac{1}{2}(6) = 3 cm

Height of cone same as height of cylinder = 15cm

Volume of cone, V_{cone} = \frac{1}{3}\pi r^2 h = \frac{1}{3}\pi (3)^2 15 =  \frac{1}{3}(9)15\pi = \bold{45\pi}\\


Difference is the volume of the remaining solid

V_{cyl} - V_{cone} = 540\pi - 45\pi = \bold{495\pi} \approx \bold{1555.088 cm^3}



5 0
1 year ago
At the start of the month, Stephen’s savings account had a balance of $1,624. He made a $420 withdrawal each week for four weeks
goldenfox [79]
420 x 4 = 1,680. $1,624 - $1,680 = - $56. $600 x 2 = 1,200 + 1000 = 2,200. This minus the $56 he overdrew = an end of month balance of $2,144.
6 0
3 years ago
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riadik2000 [5.3K]

Answer:

0.44

Step-by-step explanation:

2/3 - 2/9 = 0.44

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kirza4 [7]

Answer:

A. n5+4   B. (4+n)5  C.(4+n)/5    D.(n*n)3   E. (n*3)  2

Step-by-step explanation:

I am not good at explaining but for E. the 2 will be squared but I am not sure how to type it out so Hope this can help  ;)

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2 years ago
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Help me please (20 points) (2 questions) PLEASE (picture below)
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The first question is 2, 12, and 14 but i’m sorry i don’t know the second :(
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