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GarryVolchara [31]

3 years ago

12

A video game console that is normally priced at 269.99 has been marked down by 33% of its original price. If the sales tax is 8.

25% on the discounted price, what will be the final price of the video console?

1 answer:

larisa86 [58]3 years ago

7 0

Answer:

$5.99

Step-by-step explanation:

I am Majoring in math and Personal Finance

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Help please - first question

Afina-wow [57]

The answer should be x=60. ABD are an equilateral triangle all the angles must add up to 180. 60*3=180. Also if you have a protractor you can measure the angle C, the 60 degrees part and measure it against A, D and B. Hope this helps.

5 0

2 years ago

Find an equation of the sphere that passes through the origin and whose center is (-2, 2, 3). Be sure that your formula is monic

Andrei [34K]

Answer:

$\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

Step-by-step explanation:

Given the center of sphere is: (-2, 2, 3)

Passes through the origin i.e. (0, 0, 0)

To find:

The equation of the sphere ?

Solution:

First of all, let us have a look at the equation of a sphere:

$(x-a)^2+(y-b)^2+(z-c)^2=r^2$

Where ( $x,y,z$ ) are the points on sphere.

$(a, b, c)$ is the center of the sphere and

$r$ is the radius of the sphere.

Radius of the sphere is nothing but the distance between any point on the sphere and the center.

We are given both the points, so we can use distance formula to find the radius of the given sphere:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$

Here,

$x_1 =0 \\y_1 =0 \\z_1 =0 \\x_2 =-2 \\y_2 =2 \\z_2 =3$

So, Radius is:

$r = \sqrt{(-2-0)^2+(2-0)^2+(3-0)^2}\\\Rightarrow r = \sqrt{4+4+9} = \sqrt{17}$

Therefore the equation of the sphere is:

$(x-(-2))^2+(y-2)^2+(z-2)^2=(\sqrt{17})^2\\\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

4 0

3 years ago

HELPP PLEASEEE njjwjww

Phoenix [80]

There u go tried my best to work it out!! :))

3 0

2 years ago

Shonda goes to a restaurant with no more than $15 to spend. She buys a burger that costs

andrew11 [14]

Answer:

she has 4.5

and she should´ve got bacon egg and cheese than that burger

5 0

2 years ago

Which one doesn’t belong?identify the phrase that cannot be described by the same absolute value as the other three?

lys-0071 [83]

Answer:

8 miles above sea level.

Step-by-step explanation:

A loss of 8 pounds

= -8 pounds

8 miles from sea level

= Talking about distance.

18° below normal

= -8 degrees

Giving away $8

= -8 dollars

4 0

3 years ago