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Oksana_A [137]
3 years ago
8

M các ma trận vuông cấp hai thỏa mãn

Mathematics
1 answer:
murzikaleks [220]3 years ago
6 0

Step-by-step explanation:

ano taong diyan po pic mo

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Find the measure of each angle of a regular pentagon.<br> 36°<br> 108°<br> 144°<br> 72°
iragen [17]

Answer:

The Correct Option is Second one 108°.

Hence, the measure of each internal angle of a regular Pentagon is 108°.

Step-by-step explanation:

Given:

A Regular Pentagon.

Accordingly, for a Pentagon, the total of the internal angles is given by,

\textrm{Total Measure Internal Angles}=(5-2)\times 180\° = 3\times 180\°= 540\°

In case of a regular Pentagon, all internal angles are equal.

Hence, divide the total above by 5.

\textrm{Measure of each angle of regular Pentagon}=\dfrac{540}{5}=108\°

Hence, the measure of each internal angle of a regular Pentagon is 108°.

7 0
4 years ago
The arc length of a sector is equal to four times the radius. Express the arc length s
Sveta_85 [38]

Answer:

Step-by-step explanation:

Given that,

The arc length is four times the radius

Let he radius be 'r'

Then, the arc length be 's'

The arc of a sector can be calculated using

s=θ/360 × 2πr

Then, given that s=4r

So, 4r = θ × 2πr / 360

Divide both side r

4 = θ × 2π/360

Then, make θ subject of formula

θ × 2π = 360 × 4

θ = 360 × 4 / 2π

θ = 720 / π

So, area of the sector can be determine using

A = θ / 360 × πr²

Since r = ¼s

Then,

A = (θ/360) × π × (¼s)²

A = (θ/360) × π × (s²/16)

A = θ × π × s² / 360 × 16

Since θ = 720 / π

A = (720/π) × π × s² / 360 × 16

A = 720 × π × s² / 360 × 16 × π

A = s² / 8

Then,

s² = 8A

Then,

s= √(8A)

s = 2 √2•A

6 0
3 years ago
Can you plz help out ​
Archy [21]

Try this option:

1) q: What is the slope of the line and what does it mean in this situation?

a: the slope is 2.5 and it means '<u>ammount of the rain is 2.5 mm. per hour</u>'.

2) the slope of the line is '<u>2.5</u>'

3) this means that '<u>2.5</u>' mm. of the rain falls every '<u>1</u>' hour.

5 0
3 years ago
Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. She also earns a base salary
sashaice [31]

Danielle earned $951.25

Step-by-step explanation:

Multiply her commission by her sales and add her base rate

x=7.25%($4500)+625 or x=0.0725(4500)+625

distribute

x=326.25+625

simplify

x=951.25

8 0
3 years ago
If u can do this your so brainy !!!!
Semenov [28]

Answer:

sadly I'm not brainly

Step-by-step explanation:

8 0
3 years ago
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