Ask question

Ask question

All categories

3 years ago

8

A computer is on sale and is marked down 30% off regular price. After 13% tax, you pay $355.95. Calculate the regular price of t

he computer.

1 answer:

lorasvet [3.4K]3 years ago

7 0

Answer:

you need to use the before change and after method

You might be interested in

A gopher begins at 7 inches below the surface of a garden and digs

gladu [14]

-7-9, because he already starts below the surface by 7 feet then digs 9 inches lower

3 0

4 years ago

What is the remainder when 15,908 is divided by 13

bekas [8.4K]

15903/13 equals 1223.69230769

3 0

4 years ago

Read 2 more answers

What quantity of apples would you need to make a triple recipe?

lora16 [44]

If 2 1/4 cups of apples are needed for a single recipe, then a triple recipe would call for 3 times as many....

3 * 2 1/4 =
3 * 9/4 =
27/4 or 6 3/4 cups are needed for a triple recipe

8 0

4 years ago

How would I solve this?

givi [52]

Answer:

The valid value of x is x=-2

Step-by-step explanation:

we know that

The sum of the interior angles of any quadrilateral must be equal to 360 degrees

so

$(7x^{2}-24x)+100+(24-46x)+(3x^{2}+56)=360$

solve for x

Combine like terms

$10x^{2}-70x+180=360$

$10x^{2}-70x-180=0$

Divide by 10 both sides

$x^{2}-7x-18=0$

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

$x^{2}-7x-18=0$

so

$a=1\\b=-7\\c=-18$

substitute in the formula

$x=\frac{-(-7)(+/-)\sqrt{-7^{2}-4(1)(-18)}} {2(1)}$

$x=\frac{7(+/-)\sqrt{121}} {2}$

$x=\frac{7(+/-)11} {2}$

$x=\frac{7(+)11} {2}=9$

$x=\frac{7(-)11} {2}=-2$

Remember that

The measure of the interior angle cannot be a negative number

For x=9

we have that the measure of one interior angle of quadrilateral is

$24-46x$

substitute the value of x

$24-46(9)=-390\°$

therefore

The value of x=9 cannot be a solution

For x=-2

The measure of the interior angles are

$(7(-2)^{2}-24(-2))=76\°\\100\°\\(3(-2)^{2}+56)=68\°\\24-46(-2)=116\°$

therefore

The valid value of x is x=-2

7 0

3 years ago

yul has lunch at a restaurant if his bill is $14.50 and yul want to leave 20% tip what is the amount he should leave for a tip

Mariulka [41]

Yul has lunch at a restaurant. If his bill was $14.50 and Yul wants to leave a 20% tip, what is the amount he should leave for the tip?

Yul should leave 20% tip of

14.50 * 0.20 = 2.9

3 0

3 years ago

Read 2 more answers