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3 years ago

What is 9% written as a decimal

Mathematics

2 answers:

Alinara [238K]3 years ago

4 0

$p\%=\dfrac{p}{100}\\\\therefore\\\\9\%=\dfrac{9}{100}=\boxed{0.09}$

eimsori [14]3 years ago

3 0

9% written as a decimal is .09. Hope it helped.

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What is the volume of a hemisphere with a radius of 2.3m round to the nearest tenth of a cubic meter

kodGreya [7K]

Answer: $25.5 m^{3}$

Step-by-step explanation:

If the volume of a sphere is

$V=\frac{4}{3} \pi r^{3}$

Where $r=2.3 m$ is the radius

The volume of a hemisphere is half the volume of the total sphere:

$V_{hemisphere}=\frac{V}{2}=\frac{\frac{4}{3} \pi r^{3}}{2}$

$V_{hemisphere}=\frac{2}{3} \pi r^{3}$

Solving this equation:

$V_{hemisphere}=\frac{2}{3} \pi (2.3 m)^{3}$

Finally:

$V_{hemisphere}=25.48m^{3} \approx 25.5 m^{3}$

5 0

2 years ago

Based only on the information given in the diagram, it is guaranteed that JKL ~ WXY.

Alika [10]

Answer:

Option A True

Step-by-step explanation:

we know that

The sum of the internal angles of the triangle is equal to $180\°$

In the triangle JKL

m∠L= $180\°-90\°-27\°=63\°$

The measurements of the angles of triangle JKL are $27\°-90\°-63\°$

In the triangle WXY

m∠W= $180\°-90\°-63\°=27\°$

The measurements of the angles of triangle WXY are $27\°-90\°-63\°$

therefore

Triangle JKL and triangle WXY are similar by AAA ( The AAA postulate states that if you can prove that all three angles of two triangles are congruent, you can prove the two triangles are similar)

6 0

2 years ago

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The diagram shows a box in the periodic table. What is the atomic mass of the element shown? Pls Help

faltersainse [42]

Answer:

28.1

Step-by-step explanation:

the numbers on the bottom (28.1) represent atomic mass

atomic number (14) is the top

si is what silicon stands for

hope this helps:)

8 0

2 years ago

What number can be used to complete the volume statement for the cone? 4m h 3 m base

Mariana [72]

The volume of a cone is calculated through the equation,

V = (πD²/4)(H)/3

where V is volume,
D is diameter
H is height

Substituting the known values,

V = (π(3m)²/4)(4m)/3

Simplifying,
V = 3π m³

The volume of the cone is equal to 3π or 9.42 m³. The value should complete the volume statement of the cone.

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3 years ago

HELPP !!!!!! THEY ALL GO SOMEWHERE THERE SHOULDNT BE ANYLEFT

lutik1710 [3]

A.) (3, 4) = "right 3 up 4" [ Option A, C ]

B.) (-3, 4) = "left 3 up 4" [ Option B, D ]

C.) (4, -3) = "right 4 down 3" [ Option E ]

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3 0

3 years ago

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