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3 years ago

You want to buy a DVD that costs $19.95. Estimate the total cost if the sales tax rate is 8%.

Mathematics

1 answer:

meriva3 years ago

4 0

Answer:

$1.60

Step-by-step explanation:

first you take 19.95 times .08 and you get 1.596 you round up to get 1.6

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A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales,

lorasvet [3.4K]

Answer:

b= -4.68

Step-by-step explanation:

Hello!

We have to study variables:

Y: Monthly coffe sales

X: Price per pound of coffe ($)

The estimate regression line is

^Yi= a + bxi ∀ (i=1,.....,10)

The slope of the estimated regression line is represented by b.

The formula I'll use to calculate it is:

b= [n∑xiyi -(∑xi)*(∑yi)]/ n∑xi²-(∑xi)²

To calculate b we need to do some auxiliary calculations:

∑xiyi= 4213.15

∑xi= 87.47

∑yi= 545

∑xi²= 883.3703

Then we replace the formula:

b= [10*4213.15-(87.47)*(545)]/ n883.3703-(87.47)²

b= -4.68

I hope you have a SUPER day!

5 0

3 years ago

The ratio of boys to girls in the

9966 [12]

Answer:

Answer : 52 girls

Step-by-step explanation:

Your ratio of boys to girls is 3:4

Set up a fractional proportion and cross multiply

3/4 = 39/x

cross multiply

3x = 4(39)

3x = 156

x = 156/3

x = 52 girls

Hope this was helpful!❤

5 0

3 years ago

Redondear a 100,000 el numero 5,370,288

Softa [21]

Para redondear este número a 1,000, verifiquemos el tercer dígito del número.

Si el dígito es mayor que 5, aumentamos el siguiente número en 1 unidad.

Si el dígito es menor o igual a 5, mantenemos el siguiente número.

El tercer dígito es 3, por lo que el número redondeado es:

$25,000$

6 0

1 year ago

What are the solutions of |8n| _>40? Graph the solutions. Please help me I need the question

stepladder [879]

Answer: n < -5 or n > 5

Step-by-step explanation: Solve for n

6 0

3 years ago

25 is 40% of what number?

andrew-mc [135]

It would actually be 62.5

6 0

3 years ago

Read 2 more answers