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katrin2010 [14]
3 years ago
15

The sales tax for an item was $28.80 and it cost $320 before tax. What is the answer ?

Mathematics
2 answers:
Lilit [14]3 years ago
4 0
It would cost 348.80
quester [9]3 years ago
3 0

Answer:

348.8

Step-by-step explanation:

320 + 28.8 = 348.8

Hopefully this helps you :)

pls mark brainlest ;)

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The sales at a particular bookstore grew from $2006 million in 2000 to $3803 million in 2005. Find an exponential function to mo
Mariana [72]
Yes initial amount is 2044 (in millions) 

Since the function is from 2000 then you can set it up as 
B(t)=2044*a^t 

To solve for "a" use the second number given, 3846, and since this value is 5 years after 2000 t=5 
so we plug in these values 
3846=2044*a^5 

we now solve for a 

first, divide by 2044 
3846/2044=a^5 

next, we take the 5th root 
<span>5sqrt(3846/2044) = a 

I hope my answer has come to your help. Thank you for posting your question here in Brainly.
</span>
4 0
3 years ago
An angle measures 12° less than the measure of its complementary angle. What is the measure of each angle?
ale4655 [162]

Let ∠1 be x

Let ∠2 be x-12

<h3>ATQ,</h3>

\rm(x - 12 )+ x = 90 \degree

\rm2x - 12 = 90 \degree

\rm2x = 90 + 12

\rm2x = 102

\boxed{ \bf \: x = 51 \degree}

<h3>So,</h3>

\sf \: ∠1 = x \\  \sf \:  = 51 \degree

\sf \: ∠2 = x - 12 \\  \sf  = \: 51 - 12 \\  \sf∠2 = 39 \degree

5 0
2 years ago
Read 2 more answers
6 situaciones en las que se hace necesario el uso de los números negativos
uranmaximum [27]

Answer:

Comprobar explicación

Check Explanation

Step-by-step explanation:

Los números negativos son números menores que 0. Son muy importantes en la naturaleza y en cualquier trato con los números. Por lo general, se escriben con un signo menos delante de ellos.

Las situaciones en las que el uso de números negativos son absolutamente necesarios incluyen

1) En los negocios, los números negativos se utilizan para indicar la deuda y la salida de efectivo.

2) En los circuitos eléctricos, se usan números negativos para describir el voltaje nominal cuando se invierten las polaridades de la batería.

3) En mediciones de temperatura para indicar temperaturas inferiores al punto de congelación del agua, especialmente en la escala Celsius (0°C).

4) Para indicar profundidades debajo del nivel del mar. El nivel del mar generalmente se designa como nivel 0 en términos de elevación.

5) En la numeración de los pisos debajo de la planta baja para un edificio alto.

6) En el análisis económico general, se utilizan para indicar una disminución de la economía, el PIB del país o un déficit en el presupuesto.

- En el análisis matemático general, los cálculos y las manipulaciones, los números negativos se usan ampliamente y son muy importantes.

- En química, los números negativos se utilizan para indicar la carga en los aniones (iones negativos).

¡¡¡Espero que esto ayude!!!

English Translation

6 situations in which the use of negative numbers is necessary.

Solution

Negative numbers are numbers that are lesser than 0. They are very important in nature and in any dealings with numbers. They are usually written with a minus sign in front of them.

The situations in which the use of negative numbers are absolutely necessary include

1) In business, negative numbers are used to indicate debt and outflow of cash.

2) In electrical circuits, negative numbers are used to describe the rated voltage when the polarities of the battery are reversed.

3) In temperature measurements to indicate temperatures lesser than the freezing point of water especially on the Celsius scale (0°C).

4)To indicate depths below the sea level. The sea level is usually designated to be 0 level in terms of elevation.

5) In the numbering of the floors below the ground floor for a tall building.

6) In general economic analysis, they are used to indicate a decline in the economy, country's GDP or deficit in budget.

- In general mathematical analysis, calculations and manipulations, negative numbers are used very extensively and are very important.

- In chemistry, negative numbers are used to indicate the charge on anions (negative ions).

Hope this Helps!!!

8 0
3 years ago
If you borrow $3,000 on an 8% discounted loan for 9 months, how much will you actually receive?
postnew [5]

Answer:you add 0.08+3000+9 and that should give you your answer

Step-by-step explanation:

3 0
3 years ago
A rectangle has a length of 12 inches and a width of 6 inches. A second rectangle will be drawn with a scale factor of
olchik [2.2K]

Answer:

24in

Step-by-step explanation:

5 0
3 years ago
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