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3 years ago

For which regular polygon is 30 degrees the smallest angle of rotational symmetry?

Mathematics

2 answers:

Natasha2012 [34]3 years ago

5 0

Answer:

the answer is D

Step-by-step explanation:

eduard3 years ago

4 0

<h3>answer.</h3>

•given that is smallest angle of rotational symmetry for a regular polygon is 30

•we have to find the number of side does the regular polygon have

•if we can rotate of figure around a center point be fewer than 360° and the figure appears and change then the figure has the rotation symmetry

<h3>Hence,12 number of sides the polygon.</h3>

no. of side= 360/ smallest angle at centre=12

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5=4b-12 hurry and make sure you put how you got the answer

PIT_PIT [208]

Answer:

4.25

Process:

5=4b-12
4b=12+5
4b=17
b= $\frac{17}{4}$
b= 4.25

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3 years ago

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How do I find Q15 c, d and e???

klasskru [66]

I would make a tree because there are not that many possibilities. to get 99 with numbers between 1 and 50 you have 50+49 and 49 and 50 nothing else will work because if one spin is less than 49 say 48 to get 99 you need 51 which is impossible. either you 50 then 49 or you get 49 then 50. the others are a bit harder because you need to find all possible spins that will sum to 52 which is a much larger number.

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4 years ago

4x + 6y - z=-18<br> 3x +2y - 4z = -24<br> - 5x + 3y + 2z = 15<br> find x y and z

Anna71 [15]

Answer:

x = -2, y = -1, z = 4

Step-by-step explanation:

4x + 6y - z=-18

z = 18 + 4 x + 6 y

3x +2y - 4z = -24

z = 6 + (3x)/ 4 + y /2

- 5x + 3y + 2z = 15

z = 15/2 + (5x)/2 - (3y)/2

18 + 4 x + 6 y = 6 + (3x)/ 4 + y /2 = 15/2 + (5x)/2 - (3y)/2

x = -22y/13 - 48/13

4(-22y/13 - 48/13) + 6y - (15/2 + (5(-22y/13 - 48/13))/2 - (3y)/2) = -18

Compute the output value of the variables x and y with respect to the input values of x, y, and z coefficients.

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3 years ago

2. The table shows the mass of fibres in 100 grams of each food item below. Food Mass of fibre (grams per 100 grams) Beans Bread

Andre45 [30]

Given that the amount of fiber in 100 grams of beans is 3.6 grams the amount of fiber consumed from $\mathbf{\frac{2}{3}}$ of the small tin is <u>4.8 grams</u>.

<h3>How can the amount of fiber consumed be calculated?</h3>

From the given table, we have;

Mass of fiber in 100 g of beans = 3.6 grams

Mass of beans in the small tin = 200 grams

The quantity of the beans eaten = $\frac{2}{3}$ of the small tin

Required:

The amount of fiber to consumed from eating $\frac{2}{3}$ of the small tin

Solution;

$Amount \ of \ fiber \ consumed = 200 \, g \times \dfrac{3.6 \, g}{100 \, g} \times \dfrac{2}{3} = \mathbf{4.8 \, g}$

Therefore;

The amount of fiber consumed by eating $\frac{2}{3}$ of the small tin = <u>4.8 grams</u>

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brainly.com/question/20591763

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2 years ago

What is the surface area of a sphere with the given dimension? Express your answer to nearest hundredth. Use 3.14 for pi. Radius

pav-90 [236]

Okay. The equation for a sphere's surface area is A = 4 * pi * r^2. Let's plug 5 in for r.
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3 years ago

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