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yKpoI14uk [10]
3 years ago
15

How to find radius from circumference

Mathematics
2 answers:
ElenaW [278]3 years ago
5 0
C=pi * d
D=c/pi
R=d/2
9966 [12]3 years ago
3 0

Answer:

The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius.

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16. At the mall, a pair of jeans cost $44 and a pair of earring cost $12. You spend a total of $80
sergij07 [2.7K]

There are 3 pairs of earrings that you bought in addition to the jeans. Forming an equation with the given values helps to find the required value.

<h3>How to write an equation for the given information?</h3>

It is given that,

A pair of jeans cost = $44

A pair of earrings cost = $12

you spent a total of $80 before taxes.

So, the equation for the given data is,

$80 = $44 + $12x

Where x is the number of pairs of earrings.

<h3>Calculation:</h3>

Simplifying the obtained equation:

$80 = $44 + $12x

⇒ 12x = 80 - 44

⇒ 12x = 36

⇒ x = 36/12

∴ x = 3

Thus, you can buy three pairs of earrings at the mall in addition to the jeans.

Learn more about an equation here:

brainly.com/question/25678139

#SPJ9

8 0
2 years ago
URGENT I NEED AN ANSWER!!! A water tank holds 657 gallons but is leaking at a rate of 4 gallons per week. A second water tank ho
DENIUS [597]

Answer: 73 weeks

Step-by-step explanation:

Equations

657-4w=876-7w

Solve for w

w=73

6 0
3 years ago
Divide x4+2x2−24<br> by x+2
Ipatiy [6.2K]

\begin{array}{c|c}_{-}\ x^4+2x^2-24 &\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \underline{  x+2  } \\ \!\!\!\!\!\!\!\!\!\!\! \underline{x^4+2x^3}& x^3-2x^2+4x-8  \\{ \big{_{-}}}-2x^3-24& \\\underline{-2x^3-4x^2}& \\  _{-} \ 4x^2-24 & \\ \underline{4x^2+8x}&   \\  _{-}-8x-24& \\ \underline{-8x-16} & \\ -8 &\end {array }

\displaystyle \frac{x^4+2x^2-24}{x+2} =x^3-2x^2+4x-8 -\frac{8}{x+2}

7 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.
Ahat [919]

Answer:

Cos θ  = -4/5

Tan θ = -3/4

Step-by-step explanation:

The question is as following:

Select the correct answer from each drop-down menu.

Angle θ lies in the second quadrant, and sin θ =3/5.

cos θ = -4/5, -3/5, 3/5, 4/5

tan θ = -4/3, -3/4, 3/4, 4/3

==================================================

Since, the angle lies in second quadrant (negative x axis and positive y axis) we can deduce that cos θ is negative and tan θ is also negative.

If sin θ =3/5

cos \  \theta =\sqrt{1-sin^2 \theta} = \sqrt{1-(\frac{3}{5} )^2} =\sqrt{1-\frac{9}{25} }=\sqrt{\frac{16}{25} } =\frac{4}{5}

∴ Cos θ = -4/5 ⇒ because θ lies in the second quadrant.

And

Tan θ = (sin θ)/(cos θ) = (3/5) / (-4/5) = -3/4.

3 0
4 years ago
In April 2008, an audio CD was available for $14.01. the list price (full price) of the CD was $19.32. What was the percent disc
8_murik_8 [283]
19.30 - ( p / 100 )*19.32 = 14.01 ;
19.30( 1 - p/100 ) = 14.01 ;
1 - p/100 = 14.01 / 19.30
1 - p / 100 = 0.72 ;
p/100 = 1 - 72 / 100 ;
p/100 = 28 / 100 ;
p = 28 ;
The percent discount is 28% ;
4 0
3 years ago
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