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2 years ago

What is the degree form for 3n/4 radians?

Mathematics

1 answer:

yanalaym [24]2 years ago

4 0

Answer:

$135^\circ$

Step-by-step explanation:

To convert radians to degrees, use the formula $x^\circ=r\frac{180}{\pi}$ where $r$ is the number of radians:

$x^\circ=r\frac{180}{\pi}$

$x^\circ=(\frac{3\pi}{4})(\frac{180}{\pi})$

$x^\circ=\frac{540}{4}$

$x^\circ=135$

Therefore, $\frac{3\pi}{4}$ radians is $135^\circ$

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How can you tell when a quadratic equation has no real solutions?

Alona [7]

Answer: The correct option is (A). When the radicand is negative

Step-by-step explanation: We are given to select the correct option by which we can tell that a quadratic equation has no real solutions.

We know that for the quadratic equation

$ax^2+bx+c=0,~a\neq 0$ the radicand is given by

$D=b^2-4ac.$

Based on the radicand "D", we have the following rules:

(i) If D > 0 (positive), then the two solutions are real and unequal.

(ii) If D = 0, then the two solutions are equal.

(iii) If D< 0 (negative), then the two solutions are complex (not real).

Thus, when the radicand is negative, then the quadratic equation has no real solutions.

Option (A) is correct.

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3 years ago

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padilas [110]

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4 years ago

The sum of the lengths of two opposite sides of the circumscribed quadrilateral is 12 cm, the length of a radius of the circle i

nasty-shy [4]

Answer:

60cm^2

Step-by-step explanation:

We assume that is a circumscribing quadrilateral, rather than one that is circumscribed. It is also called a "tangential quadrilateral" and its area is ...

K = sr

where s is the semi-perimeter, the sum of opposite sides, and r is the radius of the incircle.

K = (12 cm) (5cm) = 60 cm²

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A quadrilateral can only be tangential if pairs of opposite sides add to the same length. Hence the given sum is the semiperimeter.

8 0

3 years ago

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tatuchka [14]

Answer:

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Step-by-step explanation:

3 0

3 years ago

Eight times the sum of a number and 4 equals 3

BigorU [14]

The algebraic expression is: $8(x+4)=3$

And Value of x is: $x=\frac{-21}{8}$

Step-by-step explanation:

We need to write the expression of the statement:

Eight times the sum of a number and 4 equals 3

Let the number = x

The expression will be:

$8(x+4)=3$

Solving the expression to find value of x:

$8(x+4)=3\\8x+24=3\\Adding\,\,-24\,\,on\,\,both\,\,sides:\\8x+24-24=3-24\\8x=-21\\x=\frac{-21}{8}$

So, The algebraic expression is: $8(x+4)=3$

And Value of x is: $x=\frac{-21}{8}$

Keywords: Algebraic Expression

Learn more about Algebraic Expression at:

#learnwithBrainly

3 0

3 years ago