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3 years ago

What is the radius and diameter of the following circle? 4.2cm Please help

Mathematics

2 answers:

agasfer [191]3 years ago

6 0

Answer:

The radius is 4.2 and the diameter is always twice the amount of the radius so its 8.4.

Step-by-step explanation:

brilliants [131]3 years ago

6 0

Answer: R = 4.2cm and D = 8.4cm

Step-by-step explanation: The diameter of a circle is the full line across the circle. The radius of a circle is half of its diameter. The line shown go's halfway through the circle so its the radius. To find the diameter you multiply the radius by 2.

$4.2 * 2 = 8.4$

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I need to use Multi-Step function inverse to find the following:

dexar [7]

Answer:

$f^{-1}(x) = \sqrt[5]{\frac{x+7}{9} -10}$

Explanation:

given : f(x) = 9( $x^5$ + 10 ) - 7

replace x and y with each other.

x = 9( $y^5$ + 10 ) - 7

solve for y

x + 7 = 9( $y^5$ + 10 )

( $y^5$ + 10 ) = $\frac{x + 7}{9}$
$y^5$ + 10 = $\frac{x + 7}{9}$

$y^5$ = $\frac{x + 7}{9}$ - 10

y = $\sqrt[5]{\frac{x+7}{9} -10}$

Therefore,

$f^{-1}(x) = \sqrt[5]{\frac{x+7}{9} -10}$

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Answer:

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7 0

2 years ago

Read 2 more answers

What is the area of a circle whose radius is 20 meters? PLEASE HELP

dybincka [34]

Answer:

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3 years ago

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What are the measures of a triangle with angles of (x+20) degrees (2x+10) degrees (4x-60) degrees?

stich3 [128]

In a triangle, the three interior angles always add to 180°

m∠1 = x+20
m∠2 = 2x+10
m∠3 = 4x-60

x+ 20 + 2x + 10 + 4x - 60 = 180
7x - 30 = 180
7x = 180 + 30
7x = 210
x = 210/7
x = 30

m∠1 = x+20 = 30 + 20 = 50°
m∠2 = 2x+10 = 2*30 + 10 = 70°
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4 years ago