What are the exact solutions of x2 − 3x − 5 = 0?

Answers

Answer 1

Answer: $x^(2) - 3x - 5 = 0 \n \n \Delta = (-3)^(2) - 4 \cdot 1 \cdot (-5) = 9 + 20 = 29 \n \n √(\Delta ) = √(29) \n \n x_(1) = (3 - √(29) )/(2) \n \n x_(2) = (3+ √(29) )/(2) \n \n \boxed{x \in \left \lbrace (3 - √(29) )/(2) , (3 + √(29) )/(2) \right \rbrace }$

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Prove that sin(x) + tan(x) = 1 + sec(x)/csc(x) by using trigonometric identities.

Answers

Answer:

Step-by-step explanation:

sin(x) + tan(x) =sin(X) + sin(x)/cos(x)

=sinx(1+1/cosx)

=Sinx(1+secx)

=1+secx/cosecx. (Since sinx=1/cosecx)

Hence LHS=RHS proved

An arc on a circle measures 250 degrees. Within range which range is the radian measure of the central angle?

Answers

If the arc measures 250 degrees then the range of the central angle lies from π to 1.39π.

Given that the arc of a circle measures 250 degrees.

We are required to find the range of the central angle.

Range of a variable exhibits the lower value and highest value in which the value of particular variable exists. It can be find of a function.

We have 250 degrees which belongs to the third quadrant.

If 2π=360

x=250

x=250*2π/360

=1.39 π radians

Then the radian measure of the central angle is 1.39π radians.

Hence if the arc measures 250 degrees then the range of the central angle lies from π to 1.39π.

Learn more about range at brainly.com/question/26098895

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how many solutions does the graph above show?
a. one
b. none
c. Infinite

Answers

Answer:

None

Step-by-step explanation:

I said this because i usually don't find any solutions for graphs until i find out that there are infinite or one

b. no solution

explain: if they are parallel, there are no solutions

I need help plsssd it’s algebra

Answers

I would say B

Hope I helped :)

Turkey weigh 7kg how long to cook

Answers

If a turkey weighs 7kg or 14lbs, it must have a roasting time of 2 3/4 to 3 hours and a resting time of up to 60 minutes. This weight is good for 8 to 10 servings.

Roasting time is the time it is cooked inside the oven. Resting time is the time the turkey is taken out of the oven but left alone so that the heat inside the turkey will still continue to cook the meat within.

Roasting time varies on the weight of the turkey but the resting time has a maximum of 60 minutes.

3kg - 1 3/4 - 2 hrs.
4kg - 2 - 2 1/4 hrs
5kg - 2 1/4 - 2 1/2 hrs
6kg - 2 1/2 - 2 3/4 hrs
9kg - 3 1/2 - 4 hrs
11kg - 4 1/2 hrs

The definition of an angle uses the undefined term ?

Answers

The undefined terms in geometry used for the definition of an angle are line or ray and point. Two lines extend to meet at a common point or the two rays share the same endpoint. The common point between the two lines or the two rays of the angle is called the vertex.

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Kalon and his friend Marna own a chimney sweep service company. Working together, they can clean a chimney in 1 5/7 hours. If it takes Kalon 4 hours to clean a 20-foot chimney by himself, how long does it take Marna to clean the same size chimney by herself?