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3 years ago

20 POINTS PLEASE HELP Determine whether each figure has rotational symmetry, line symmetry, both, or neither.

Mathematics

2 answers:

ra1l [238]3 years ago

5 0

1. Both
2. Line
3. Line
4. Neither

alexgriva [62]3 years ago

4 0

1-rotational
2-rotational
3-rotational
4-neither

(I’m like 99% sure)

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The Irregular figure can be broken into a triangle and a rectangle as shown with the dashed line.

telo118 [61]

Given:

Given that the irregular figure is broken into a triangle and a rectangle.

We need to determine the length b, the area of the triangle , the area of the rectangle and the area of the irregular figure.

Length of b:

The length of b , the base of the triangle is given by

$b=5-(2\frac{1}{3})$

Simplifying, we get;

$b=5-\frac{7}{3}$

$b=\frac{8}{3} \ ft$

Thus, the length of the base of the triangle is $\frac{8}{3} \ ft$

Area of the triangle:

The area of the triangle can be determined using the formula,

$A=\frac{1}{2}bh$

Substituting $b=\frac{8}{3} \ ft$ and $h=3 \ ft$ , we get;

$A=\frac{1}{2}(\frac{8}{3})(3)$

$A=4 \ ft^2$

Thus, the area of the triangle is 4 square feet.

Area of the rectangle:

The area of the rectangle can be determined using the formula,

$A=lw$

where l = 5 ft, $w=1 \frac{1}{3}=\frac{4}{3} \ ft$ , we get;

$A=5 \times \frac{4}{3}$

$A=\frac{20}{3} \ ft^2$

Thus, the area of the rectangle is $\frac{20}{3} \ ft^2$

Area of the irregular figure:

The area of the irregular figure can be determined by adding the area of the triangle and the area of the rectangle.

Thus, we have;

Area = Area of the triangle + Area of the rectangle

Substituting the values, we have;

$Area = 4+\frac{20}{3}$

$Area = 10.667 \ ft^2$

Thus, the area of the irregular figure is 10.667 square feet.

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4 years ago

What is the difference between a minor and major arc of a circle?

Rufina [12.5K]

Answer:

Hi there!

Given two points on a circle, the minor arc is the shortest arc linking them. The major arc is the longest.

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4 years ago

Read 2 more answers

Find length,width and area plus bonus please show work

stira [4]

A square with the same perimeter as a rectangle will have larger area.

However, 42 is not divisible by 4, so we can do 10 by 11.

Length = 11, Width = 10, Area = 110

42 / 4 = 10.5

Length and Width = 10.5, Area = 110.25

3 0

3 years ago

What percent of 42 is 28

Liula [17]

We can create an equation.

What percent is x

'of' indicates multiplication

'is' indicates an equal sign

So we have:

x * 42 = 28

42x = 28

Divide 42 to both sides:

x = 2/3

Multiply by 100 to convert to a percentage.

x = 66 2/3 %

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3 years ago

A square calendar has sides that are 20 Inches long. What is the calendar's perimeter? inches

Naddik [55]

Answer:

80 in.

Step-by-step explanation:

to find the perimeter of a shape you add all of the side lengths together

20+20+20+20

8 0

3 years ago