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gregori [183]
3 years ago
13

PLEASE HELP I GIVE A DECENT AMOUNT OF POINTS !!The circumference of the outside of a ring is 66 mm, and it has an outer diameter

of 21 mm. If the circumference of the inside of the ring is 50 mm, what is the inner diameter of the ring?
Plz show how you got your answer. Fake answers will be reported and shown to administators
Mathematics
1 answer:
Alexxx [7]3 years ago
8 0

Answer

I gotchu. The answer I got is 15.9235 or 16

Step-by-step explanation:

So the formula for circumference is Pi times diameter. (If I remember right) Now we can flip this equation to become Circumference divided by pi. This will give us our answer. I dunno if you have to round so here are my two answers.

16 (rounded) or  15.9235 :)

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Rajesh is working out the area of a circle with radius 10 he writes
Maru [420]

Answer:

He multiplied the radius by 2 instead of squaring it

7 0
3 years ago
A 6 pound bag of oranges cost 6.78 What is the unit price?
oksano4ka [1.4K]

Answer:

$1.13

Step-by-step explanation:

Since 6 pound bag of oranges costs $6.78...

\frac{6.78}{6}

Now, let's divide 6.78 in to 6 to find our unit price.

\frac{1.13}{1}

Now we know 1 pound, (our unit price), costs...

$1.13

5 0
3 years ago
What is the product of the polynomials below? (4x^2-2x-4)(2x+4)
Travka [436]

Answer:  8x³ + 12x² - 16x - 16

<u>Step-by-step explanation:</u>

  (4x² - 2x - 4)(2x + 4)

= (2x + 4)(4x² - 2x - 4)

= 2x(4x² - 2x - 4)  +  4(4x² - 2x - 4)

=   8x³ - 4x² - 8x   +  16x² - 8x - 16

=   8x³ + (-4x² + 16x²) + (-8x - 8x) - 16

=   8x³ + 12x² - 16x - 16

7 0
3 years ago
Plz help me :((((((​
yawa3891 [41]

Answer:

a and d = 32

Step-by-step explanation:

since ABC and DEF are similar m<A = m<D so you have the equation

5x + 12 = 8x

subtract 8x from both sides

5x + 12 -8x = 0

subtract 12 from both sides

5x -8x = -12

combine like terms

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devide by -3

x = 4

plug 4 into equation

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7 0
2 years ago
Solve the system of linear equations by substitution x-y=-4 2x+y=4
mylen [45]

Answer:

Given:

x-y=-4

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Step-by-step explanation:

x-y=-4

2x+y=4

add both the equation, we get

⇒  x-y=-4

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∴ to find the value of y, put the value of x in any one equation

⇒x-y=-4

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⇒-y=-4

⇒y=4

∴ x=0, y=4

3 0
3 years ago
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