2 years ago

How to know when to use c2=a2+b2 or a2+b2=c2 in a question that doesnt have a shape

Mathematics

1 answer:

Viefleur [7K]2 years ago

4 0

Step-by-step explanation:

A flagpole is 53 feet tall. Most of the time, this will be a vertical side of the triangle.

The flagpole and the ground are perpendicular to each other so they should form the legs of the triangles, this the triangle will be a right angle.

The rope will be the hypotenuse, the side opposite of the right angle.

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A regular polygon has possible angles of rotational symmetry of 20°, 40°, and 80°. How many sides does the polygon have?

liq [111]

The answers 18 sides.

7 0

3 years ago

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Will get brainliest !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Anit [1.1K]

Answer:

Step-by-step explanation:

2 (length + width)

2 (29)

so answer is 58

3 0

3 years ago

0.2^x= 25 <br> Solve to find x<br> Show steps

liq [111]

$0.2=\frac{2}{10}=\frac{1}{5}=5^{-1}\ \ \ |used\ a^{-1}=\frac{1}{a}\ for\ a\neq0\\\\25=5^2\\\\therefore\\\\0.2^x=25\to(5^{-1})^x=5^2\ \ \ |use\ (a^n)^m=a^{n\cdot m}\\\\5^{-1(x)}=5^2\\\\5^{-x}=5^2\iff-x=2\to\boxed{x=-2}\\\\check:\\\\0.2^x=0.2^{-2}=\left(\frac{1}{5}\right)^{-2}=5^2=25\ O.K.\ :)$

8 0

3 years ago

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Please help me with this homework show me how you get it and the answer

omeli [17]

Radius = 4 feet
Height = 3 feet

Formula :
Volume =
πr2h
———
3

Solution :

3.14 x 42 x 3
——————— =
3

3.14 x 16 x 3
——————— =
3

150.7964
—————-
3

Volume = 50.2655 feet³

6 0

3 years ago

Rachel is pouring a concrete patio. Her patio will be 6 inches deep, 6 feet long and 8 feet wide. If she rounds up to the neares

zzz [600]

Answer:

2.6667yd^3

Step-by-step explanation

Volume of the concrete = Length * width * height

Given

height = 6 inches

To yards;

1 in = 0.0277778yd

6 in = 6 * 0.0277778

6in = 0.1666668 yards

Width = 8 feet

Length = 6ft

LW = 48ft²

To yards;

1 ft = 0.333333yd

48 ft = 48(0.333333)

48 ft^ 2 = 15.999984yd^2

Volume = 15.999984 * 0.1666668

Volume = 2.6667 yd^3

Hence she will need 2.6667yd^3 concrete

4 0

3 years ago