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2 years ago

HELLO GUYS!!

Mathematics

2 answers:

Kipish [7]2 years ago

8 0

The Area of the lawn is:

20m x 14m = 280m^2

The Area of the Circle is:

pi x 5^2 = 78.54

280 - 78.54 = 201.46m^2

ehidna [41]2 years ago

4 0

Area of a circle = pi *r^2
A = 3.14 * 5^2
A = 78.5

Area of rectangle = L * W
20 x 14 = 280

280 - 78.5 = 201.5 <===

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Pythagorean theorem

marta [7]

Answer:

x = 8

Step-by-step explanation:

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rearrange the formula:

$\sqrt{80} ^{2} - 8^{2} = b^{2}$

$80 - 64 = b^2$

$b^2 = 16\\$ $b = \sqrt{16}$

$\sqrt{16} = 4$

$x = 4+4 = 8$

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3 years ago

Solve the following system of equations using the substitution method.

sergey [27]

Answer:

y=1; x=2

Step-by-step explanation:

Substitution:

x=2y

2x+5y=9

=> if x=2y, plug in the x value into other equation, so

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2(2y)+5y=9

4y+5y=9

9y=9

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You have the Y value, so now solve for X

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plug in y value to x=2y

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5 0

3 years ago

Prism M and pyramid N have the same base area and the same height. Cylinder P and prism Q have the same height and the same base

m_a_m_a [10]

Answer:

Answer Cone Z and Cylinder Y.

Step-by-step explanation:

The relationship between the volume of the cone and the volume of the cylinder with the same height and same base is the volume of the cone is 1/3 of the volume of the cylinder.

The formula for the volume of the cone is :

V = 1/3π $r^{2}$ h

The formula for the volume of the cylinder is :

V = π $r^{2}$ h

Let be the height of the cylinder Y. Therefore the height of the cone Z is 3h, when we put it into the formula we get :

V = 1/3π $r^{2}$ (3h) = π $r^{2}$ h

Therefore Cone Z and Cylinder Y have same volume.

8 0

3 years ago

Read 2 more answers

The sum of two numbers is 180.If one number is 25% more than the other number,what are the numbers?

erica [24]

The answer is 135 and 45.

Hope this helps?

6 0

3 years ago

· The angles of a pentagon are in the ratio<br>4:8 : 6 : 4 : 5. Find each angle of the<br>pentagon

SVEN [57.7K]

Answer:

540 degrees in a pentagon

4 + 8 + 6 + 4 + 5 = 27

540/27 = 20

4 X 20 = 80 degrees

8 X 20 = 160 degrees

6 X 20 = 120 degrees

4 X 20 = 80 degrees

5 X 20 = 100 degrees

7 0

3 years ago