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2 years ago

Where were Roman numerals made

Mathematics

2 answers:

Tems11 [23]2 years ago

8 0

Ancient Rome & Europe

LenaWriter [7]2 years ago

3 0

The Roman Numeral, as far as we know, was the only written numbering system used in Ancient Rome andEurope until about 900 AD, when the Arabic Numbering System, which was originated by the Hindu's, came into use.

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Please someone actually help with this I don't understand how.

tigry1 [53]

Answer:

Scatter plot

Step-by-step explanation:

Answer is 5

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3 years ago

The windscreen wiper of a car sweeps

AVprozaik [17]

Answer:

A ≈ 530 cm²

Step-by-step explanation:

The swept area equals the total area covered by the blade minus the unswept area.

The area of a sector with radius r and angle θ is:

A = (θ / 360) πr²

So the swept area is:

A = (θ / 360) πR² − (θ / 360) πr²

A = (θ / 360) π (R² − r²)

A = (150 / 360) π (21² − 6²)

A ≈ 530 cm²

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3 years ago

Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.

Sonbull [250]

9) 147
10) 145
greatest common factor is 14 I think

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2 years ago

Find the area and perimeter of a rectangle with a length of 3x + 2 and a width of 4x + 3.

bekas [8.4K]

Answer:

170ft^2

The area is 170ft^2.

4 0

2 years ago

Read 2 more answers

Please help me i beg you PLEASE HELP ME ASAP I SWEAR TO GOD WILL MARK YOU BRAINIEST

daser333 [38]

Step-by-step explanation:

DEFINITION: Besting: the clockwise totation (0° to 360°) from North to any line.

A) Calculate the bearings of D from A:

bearings of D from A =x

looking the picture:

x=48°+55°+180°

x+103°+180°

x=283°

B)Calculate the bearings of A from C:

bearings of A from C =y

180°+55°=y

y=235°

C) Calculate the distance between A and B:

The angle in B is 74° (Because 55°+51°+74°=180°)

Using the Law of sines:

$\frac{19}{sin(74)} =\frac{AB}{sin(51)} \\\\AB=19sin(51)sin(74)\\AB=14,2\\\\$

D)Calculate the distance between D and C:

Using the Law of cossines:

$DC^{2} =27^{2} +19^{2} -2*27*19*cos(48)\\DC=20,09$

E) A Helicopter is hovering at A at a height of 2.5Km, find angle of elevation of helicopter from C:

The triangle HBA is rectangle

$\alpha =arctan(\frac{2,5}{19})$

α=7,49°

5 0

2 years ago