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4 years ago

PLZ HELP, GIVING BRAINLIEST!!

Mathematics

1 answer:

Alex4 years ago

4 0

Answer: the diameter of the circle is 226 cm

Step-by-step explanation:

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Length of arc = 88π

θ = 140 degrees

Therefore,

88π = 140/360 × 2 × π × r

Dividing both sides of the equation by π, it becomes

88 = 140/360 × 2r

88 × 360 = 140 × 2r = 280r

280r = 31680

r = 31680/280

r = 113 cm

Diameter = radius × 2

Diameter = 113 × 2 = 226 cm

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If $360 is invested at an interest rate of 13% per year and is compounded continuously, how much will the investment be worth in

Vlada [557]

Answer:

none of the above; $531.71

Step-by-step explanation:

Fill in the given numbers and do the arithmetic.

A = $360·e^(0.13·3) = $360·e^0.39 ≈ $360·1.1.47698

A ≈ $531.71

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Answer choice c) is approximately correct for an interest rate of 16%. The correct value would be $581.79.

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3 years ago

Which equation results from adding the equations in this system?

irga5000 [103]

Answer:

The correct option is second one i.e 7x = 3

Therefore the results from adding the equation in this system is

$7x=3$

Step-by-step explanation:

Given:

Equations as

$2x+y=8$ .......................1

$5x-y=-5$ .......................2

To Find :

Result when adding equation 1 and 2 = ?

Solution

On adding equation 1 and 2 the "y" term will get cancel and the like terms will combine that is add (2x and 5x ) and ( 8 and - 5) as shown below

2x + y = 8

5x - y = - 5

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7x + 0 = 3

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Therefore the results from adding the equation in this system is

$7x=3$

4 0

4 years ago

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A person's salary is $2000 per month. 20% of this is spent on their rent, $590 is

miv72 [106K]

Answer:

the person earned one summer = $3,600

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they spent for tuition = $2,500 = × 100

=0.6944 × 100

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= 0.1806 × 100

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2 years ago

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Illusion [34]

Answer:

$\pm5i$

Step-by-step explanation:

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$\sqrt{-1} =i\\Therefore:\\\pm\sqrt{-25}=\pm\sqrt{-1X25}$

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3 years ago

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4 years ago

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