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2 years ago

What is the area of this? Please help

Mathematics

2 answers:

Oxana [17]2 years ago

5 0

364 cm²

Step-by-step explanation:

Area of Triangle = 1/2 × B × H

where B is a base and H is height , given in the figure.

=> 1/2 × 20 × 14

=> 140 cm²

Area of Rectangle A = L × B

where L is Length and B is base of the rectangle.

=> 12 × 9

=> 108 cm²

Area of Rectangle B = L × B

To find the length and breadth we have to subtract ;

=> 12 - 5 = 7 -------- Length

=> 8 - 5 = 3 -------- Breadth

=> 7 × 3

=> 21

Area of Rectangle C - L × B

=> 19 × 5

= 95 cm²

Total area = Area of Triangle + Area of Rectangle A + Area of Rectangle B + Area of Rectangle C

=> ( 140 + 108 + 21 + 95 ) cm²

=> 364 cm²

Slav-nsk [51]2 years ago

3 0

Answer:

364 cm²

Step-by-step explanation:

Area of the figure :

Area (triangle) + Area (rectangle 1) + Area (rectangle 2) + Area (rectangle 3)
1/2 x 20 x 14 + 12 x 9 + 7 x 3 + 19 x 5
140 + 108 + 21 + 95
248 + 21 + 95
269 + 95
364 cm²

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360° 180° 90° 540° Please help me

Valentin [98]

Answer:

360 is the answer...

becoz sum of exterior angles is always 360

7 0

3 years ago

5. A car travels at a speed of 72 miles per hour. Write a direct variation equation for the distance, y, the car will travel in

astraxan [27]

Answer:

y = 72x

324miles

Step-by-step explanation:

Given parameters:

Speed of the car = 72miles/hr

distance = y

time = xhrs

Unknown:

Write a direct variation equation for the distance= ?

Distance covered in 4.5hrs =?

Solution:

A. Write a direct variation equation for the distance;

A direct variation is a linear equation.

It often takes the form y = kx

For this problem;

Distance = speed x time

input the parameters;

y = 72x

The direct variation equation is y = 72x

B. Distance traveled in 4.5hrs

y = 72x

x is the time taken;

So;

y = 72 x 4.5 = 324miles

3 0

3 years ago

What are the orders of 3,7,9,11,13,17 and 19(mod20)?does 20 have primitive roots?

bezimeni [28]

$3\equiv3\mod{20}$
$3^2\equiv9\mod{20}$
$3^3\equiv27\equiv7\mod{20}$
$3^4\equiv3\cdot3^3\equiv3\cdot7\equiv21\equiv1\mod{20}$

$7\equiv7\mod{20}$
$7^2\equiv49\equiv9\mod{20}$
$7^3\equiv7\cdot7^2\equiv63\equiv3\mod{20}$
$7^4\equiv7\cdot7^3\equiv21\equiv1\mod{20}$

$9\equiv9\mod{20}$
$9^2\equiv3^4\equiv1\mod{20}$

$11\equiv11\mod{20}$
$11^2\equiv121\equiv1\mod{20}$

$13\equiv-7\equiv13\mod{20}$
$13^2\equiv169\equiv9\mod{20}$
$13^3\equiv13\cdot13^2\equiv(-7)9\equiv-63\equiv-3\mod{20}$
$13^4\equiv13\cdot13^3\equiv(-7)(-3)\equiv21\equiv1\mod{20}$

$17\equiv-3\equiv17\mod{20}$
$17^2\equiv(-3)^2\equiv9\mod{20}$
$17^3\equiv(-3)^3\equiv-27\equiv3\mod{20}$
$17^4\equiv(-3)^4\equiv81\equiv1\mod{20}$

$19\equiv-1\equiv19\mod{20}$
$19^2\equiv19(-1)\equiv-19\equiv1\mod{20}$

Generally speaking, a number $x$ coprime to $n$ will be a primitive root of $n$ if we have $x^n\equiv x\mod{n}$ , or $x^{n-1}\equiv1\mod{n}$ . In other words, if $x$ is of order $n-1$ modulo $n$ , then $x$ is a primitive root of $n$ .

Since none of these numbers has order 19, it follows that 20 does not have any primitive roots.

6 0

4 years ago

Is .75 degrees a positive or a negative Is 0.75degrees a positive or a negative

Neko [114]

as long as it is at least a decimal above 0.00 then any number is positive.

<h2>yes it is positive.</h2>

good luck

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3 years ago

What is the graetest commom factor for 6 and 36

Zarrin [17]

Answer:

The greatest common factor of 6 and 36 is

Hope it will help :)

6 0

3 years ago

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