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Ann [662]
3 years ago
8

f a bag contains 12 quarters, 6 dimes, and 18 nickles, what is the part-to-whole ratio of dimes to all coins?

Mathematics
2 answers:
Anna35 [415]3 years ago
3 0
There are 6 dimes and a total of 36 coins in all so the part to whole ratio is 6:36 or 1:6
il63 [147K]3 years ago
3 0
Total coins = 12 + 6 + 18 = 36

dimes = 6

All = 36

Part-to-whole ratio of dimes to all = 6 : 36 = 1:6      
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Please help me!
marusya05 [52]

Answer:


Step-by-step explanation:

Nice summary problem.

<AEC

  • AEC = 360 - 243.5 = 116.5    
  • The number of degrees in 1 rotation of a circle = 360o. You have accounted for 243.5 degrees. What is left over is the answer.

<EAD and <ECD

Both of these are tangents to a circle. Tangents meet radii at 90 degree angles.

<EAD = <ECD = 90 degrees

<ABC

<ABC is 1/2 the central angle. The Central angle is <AEC

  • < AEC = 116.5
  • <ABC = 1/2 * 116.5
  • <ABC = 58.25

<ADC

There are 2 ways of doing this. You should know both of them.

<em><u>One</u></em>

All quadrilaterals = 360 degrees. You know three of the angles. You should be able to find ADC

  • <ADC + 90 + 90 + 116.5 = 360     Add the four angles together.
  • <ADC + 296.5 = 360                   Combine terms on the left
  • <ADC = 360 - 296.5                    Subtract 238.25 from both sides
  • <ADC = 63.5                                 Answer

<em><u>Method Two</u></em>

<ADC = 1/2 (major Arc - Minor Arc)  This formula is fundamental to circle / tangent properties. The Major arc is the larger of the two parts of the circumference of a circle. The Minor arc is the smaller.

  • <ADC = 1/2(243.5 - 116.5)
  • <ADC = 1/2(127)
  • <ADC = 63.5
8 0
3 years ago
What is the surface area of a sphere with radius 2
Gelneren [198K]

Answer:

A

Step-by-step explanation:

The surface area (A) of a sphere is calculated as

A = 4πr² ← r is the radius

here r = 2, hence

A = 4π × 2² = 4π × 4 = 16π units² → A

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3 years ago
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ASHA 777 [7]

56.57.

Use Pythagorean theorem

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3 years ago
Help me answer this question
borishaifa [10]
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If one real number is equal to a second real number, and the second real number is equal to a third real number, then the first
svet-max [94.6K]

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Step-by-step explanation: I think this is the problem ur on

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