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2 years ago

All of the following numbers are composite numbers except: a.15 b.17 c.18 d.14

Mathematics

2 answers:

ratelena [41]2 years ago

5 0

Your answer is B=17

hope I helped you

never [62]2 years ago

3 0

Except 17 because it is a prime number

The others have factors like for example 15 = 5 * 3.

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B) The number of volume of a cylinder is half of its number of the total surface area.

faust18 [17]

Answer:

$V=179.6cm^3$

Step-by-step explanation:

the volume of a cylinder is given by:

$V=\pi r^2h$

where r is the radius and h is the height.

and the surface area:

$SA=2\pi r^2+2\pi rh$

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

$V=\frac{1}{2}SA$

substitutig the equivalent expressions on each side:

$\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)$

and we simplify and solve for the height (since is the value we don't know of the cylinder):

$\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)$

we substitute the value of the radius $r=7cm$ , and we get:

$h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm$

thus the volume is:

$V=\pi r^2h$

$V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3$

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2 years ago

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Use distributive property to model the product on the grid. .record the product 4*12=48

Darina [25.2K]

(2+2) * (6*2) = 4*12 = 48

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2 years ago

How do you solve 4•(4y/3-2) + 3y = 17

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Us photo math , it show u even the steps of how was it solve

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Xelga [282]

12:(3)(2)(2)
36:(3)(3)(2)(2)
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3 years ago

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In the past month, Josh rented one video game and six DVDs. The rental price for the video game who is $2.50. The rental price f

dolphi86 [110]

Answer:

total amount paid = $ 22.9

Step-by-step explanation:

total price = $ 2.5 + $3.4(6)= $22.9

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3 years ago

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