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2 years ago

7

If the cost of a graphing calculator is now three-fourths of what the calculator cost 5 years ago and the cost of the graphing c

alculator is now $78. Find the cost of the calculator 5 years ago.

1 answer:

Andru [333]2 years ago

3 0

Answer:

58 1/2

Step-by-step explanation:

multiply by 3/4

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Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options. The radius of the cir

FromTheMoon [43]

The statements which are correct about the equation of circle $x^{2} +y^{2}-2x-8=0$ are 1) The radius of the circle is 3 units,2) The center of the circle lies on the x axis,5) The radius of this circle is the same the radius of the circle whose equation is $x^{2} +y^{2} =9$ .

Given the equation of circle be $x^{2} +y^{2}-2x-8=0$ .

We are required to find the appropriate statements related to the equation $x^{2} +y^{2}-2x-8=0$ .

$x^{2} +y^{2}-2x-8=0$ can be written as under:

$x^{2} +y^{2} -2x+1-9=0$

$x^{2} +1^{2}-2x+y^{2} -9=0$

$(x-1)^{2}+y^{2}$ -9=0

$(x-1)^{2} +y^{2} =9$

$(x-1)^{2}+y^{2} =3^{2}$

Equation of a circle usually in the form $x^{2} +y^{2} =a^{2}$ in which a is radius.

From the comparison of both the equations we get that radius is 3 units.

From the equation point will be (1,0). It is on the x axis.

Hence the statements which are correct about the equation of circle $x^{2} +y^{2}-2x-8=0$ are 1) The radius of the circle is 3 units,2) The center of the circle lies on the x axis,5) The radius of this circle is the same the radius of the circle whose equation is $x^{2} +y^{2} =9$ .

Learn more about radius at brainly.com/question/24375372

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3 0

11 months ago

If the slope of a line is 2 and its y-intercept is 5, what is the equation of the line?

CaHeK987 [17]

Hello,

y=2x+5
==========
(y-5)=2(x-0)

7 0

2 years ago

Read 2 more answers

Consider the equation LaTeX: pN=kVT p N = k V T , where k is a constant. Select all of the correct answers that describe the var

a_sh-v [17]

Answer: did u ever get the right answer?

Step-by-step explanation:

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2 years ago

hallie is trying to win the grand prize on a game show. Should she try her luck by spinning a wheel with 6 equal sections labele

Valentin [98]

I would say she should spin the wheel because, if she rolled the dice it would take a long time to get 2 5's on both dice at one time.
Hope this helps!

5 0

2 years ago

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Find the value of <br>tan 45º . tan- 30° tan 60°

Aneli [31]

Answer:

Find the exact value of tan 45º = 1/1 = 1.

Find the exact value of cos 30º = √3/2.

Find the exact value of csc 60º = 2√(3)/3

Step-by-step explanation:

math

6 0

2 years ago