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Fynjy0 [20]
3 years ago
11

Find the area of a square with a side of 20 cm

Mathematics
2 answers:
Bezzdna [24]3 years ago
5 0

Answer:

80 cm

Step-by-step explanation:

This is because the shape is a square, and area is width x height x length.

Since the shape is a square, all sides are the same therefore the answer is 80 cm.

Sever21 [200]3 years ago
3 0
80 cm is the correct answer
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Across which line of reflection can regular polygon ABCDEFG reflect to map onto itself?
8_murik_8 [283]

Answer: A line that is a perpendicular bisector of AB


Step-by-step explanation:

The given picture is of regular heptagon .

There are seven lines of symmetry for a regular heptagon.

Line of symmetry of regular heptagon are those lines which intersect each vertex and the mid point of opposite side .

Therefore, only fourth option is giving the right answer.

A line that is a perpendicular bisector of AB is the line of reflection which can regular polygon ABCDEFG reflect to map onto itself .



4 0
3 years ago
Read 2 more answers
Makayla has $8 to buy tickets at the school fair. Each ticket costs @1.5. Which inequality best represents how many tickets she
cricket20 [7]

Answer:

n\le 5

Step-by-step explanation:

Let n be the number of tickets Makaya has to buy.

If the cost of one ticket is $1.5, then the cost of n tickets is $1.5n.

Makayla has $8 to buy tickets at the school fair, thus

1.5n\le 8\\ \\n\le \dfrac{8}{1.5}\\ \\n\le \dfrac{80}{15}\\ \\n\le \dfrac{16}{3}\\ \\n\le 5\dfrac{2}{3}

The maximum number of tickets Makaya can buy is 5, so

n\le 5

5 0
4 years ago
Answerrrrrrrrrr??????
kumpel [21]

Answer: 1/b6

Step-by-step explanation:

3 0
3 years ago
A city employee paints curbs in parking lots and replaces road signs. It takes 0.5 hour to paint a parking lot curb and 2.5 hour
Genrish500 [490]

Question is incomplete. Here is the complete question.

A city employee paints curbs iin parking lots and replaces road signs. It takes 0.5 hour to paint a parking lot curb and 2.5 hours to replace a road sign. The function below can be used to find c, the number of parking lot curbs the employee paints when he replaces r road signs in a 40-hour workweek.

c=\frac{40-2.5r}{0.5}

If the employee painted 20 curbs in one week, how many road signs did he replace that week?

a) 20    b) 30    c) 0     d) 12

Answer: d) 12

Step-by-step explanation: In one week, the employee painted 20 curbs.

c is the number of curbs painted in one week, so: c = 20

20=\frac{40-2.5r}{0.5}

40-2.5r=20*0.5

-2.5r=10-40

-2.5r=-30

r=\frac{-30}{-2.5}

r = 12

In one week, the employee replaced 12 road signs.

5 0
4 years ago
What is the area of that shaded sector?
melomori [17]

Answer:

50.24

Step-by-step explanation:

1/4x3.14xr^2

r=16 because of the length

90/360= 1/4

so

1/4x3.14x16^2/4

=50.24

4 is our denominator because of the denominator on the fraction

4 0
3 years ago
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