3 years ago

Please help, I need this .

Mathematics

1 answer:

ohaa [14]3 years ago

4 0

14.4, if my calculator was correct

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Find the highest common factor of 32 and 80

valina [46]

32=2*2*2*2*2=2^5
80=2*2*2*2*5

hcf = 2*2*2*2=2⁴=16

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2 years ago

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About how many times greater is 12,000 miles than 3 • 10^3 miles?

Ad libitum [116K]

Answer:

3•10^3 is 3,000, so the answer is 9,000

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3 years ago

A bag is filled with 100 marbles that are all the same size and shape each marble has one color the number of marbles in a color

Svetlanka [38]

Answer: 21/100

Step-by-step explanation:

Number of green marbles = 21

Number of blue marbles = 35

Number of red marbles = 18

Number of yellow marbles = 26

Total number of marbles = 100

The probability of choosing a free marble will be:

= Number of green marbles / Tot number of marbles

= 21 / 100

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2 years ago

I’ll mark youyou brainlist I’ll mark youyou brainlist

ale4655 [162]

8r + 206 + 7r +79 = 360
15r + 285 = 360
15r = 75
r = 5

7(5) + 79
35 + 79

angle YMB is 114°

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3 years ago

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Find the Total Surface area of a Pyramid. Its base is a regular hexagon 4cm on a side. its height is 8 cm. Round off to nearest

oksano4ka [1.4K]

Answer:

The total surface area of a regular hexagonal pyramid is 146.2 cm².

Step-by-step explanation:

The base is a regular hexagon 4cm on a side. its height is 8 cm.

The total surface area of a pyramid with regular hexagon base

$A=\frac{3\sqrt{3}}{2}a^2+3a\sqrt{h^2+\frac{3a^2}{4}$

Where, a represents the base edge and h represents the height of the pyramid.

The area of given regular hexagonal pyramid is

$A=\frac{3\sqrt{3}}{2}(4)^2+3(4)\sqrt{(8)^2+\frac{3(4)^2}{4}$

$A=\frac{3\sqrt{3}}{2}(16)+12\sqrt{64+12}$

$A=24\sqrt{3}+12\sqrt{76}$

$A=146.182794027$

$A=146.2$

The total surface area of a regular hexagonal pyramid is 146.2 cm².

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3 years ago