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2 years ago

If the radius of circle is r cm, what is the measure of its circumference?

Mathematics

2 answers:

k0ka [10]2 years ago

4 0

Answer:

you need to know the value of the radius in order to work out the circumfrance. do you have a picture of the math question?

Luda [366]2 years ago

3 0

Answer:

2 pie r is the measure of its circumference.

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Tasha works at a pet store they sold 136 bags of dog food last month to boost dog food sales the store manager is going to give

makkiz [27]

Answer:

36.2 is the answer

Step-by-step explanation: 10% of 136 is 13.6 times 2.5

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3 years ago

Suppose your friend's parents invest $25,000 in an account paying 5% compounded anually. What will be the balance be after 9 yea

Mamont248 [21]

<h2>Answer:</h2>

$38 783.2

<h2>Step-by-step explanation:</h2>

The equation is:

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3 years ago

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3 years ago

Find the discriminant, and determine the number of real solutions. then solve x^2 +8x+20=0

vodomira [7]

Answer:

Part 1) The quadratic equation has zero real solutions

Part 2) The solutions are

$x_1=-4+2i$ and $x_2=-4-2i$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+8x+20=0$

$a=1\\b=8\\c=20$

The discriminant is equal to

$D=(b^{2}-4ac)$

If D=0 -----> the quadratic equation has only one real solution

If D>0 -----> the quadratic equation has two real solutions

If D<0 -----> the quadratic equation has two complex solutions

<em>Find the value of D</em>

$D=8^{2}-4(1)(20)=-16$ -----> the quadratic equation has two complex solutions

<em>Find out the solutions</em>

substitute the values of a,b and c in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(20)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{-16}} {2}$

Remember that

$i=\sqrt{-1}$

$x=\frac{-8(+/-)4i} {2}$

$x_1=\frac{-8(+)4i} {2}=-4+2i$

$x_2=\frac{-8(-)4i} {2}=-4-2i$

8 0

3 years ago

Show that x+1 is a factor of f(x)=2x^4-x^3-35x^2+16x+48 . Then factor f(x) completely

Bond [772]

Answer:

callate

Step-by-step explanation:

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2 years ago

If the radius of circle is r cm, what is the measure of its circumference?​

If the radius of circle is r cm, what is the measure of its circumference?