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satela [25.4K]
3 years ago
8

Dr.sox paid $1580 for a new computer system. She also paid 6.5% sales tax. How much was total cost?

Mathematics
1 answer:
Andru [333]3 years ago
4 0

Answer:

$1,682.70

Step-by-step explanation:

  1. Convert the percent into a decimal by multiplying by 0.01: the percent in this problem is 6.5%, so when you multiply by 0.01, you get 0.065
  2. Multiply the price by your new decimal: in this case, that would mean to multiply 1580 by 0.065, which gives you 102.7. <u>Keep in mind that this is just the tax, not your final answer.</u>
  3. Add the tax you just calculated to the original price: add 102.7 to 1580 to get 1,682.7. That is your final answer.
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PLEASE HELP!
IrinaVladis [17]

Answer:

Step-by-step explanation:

<h3>Sphere:</h3>

1) a) r =  7 cm

 \sf \boxed{\text{Volume of sphere=$\dfrac{4}{3}\pi r^3$}}

                             \sf =\dfrac{4}{3}*3.14*7*7*7\\\\= 1436 \ cm^3

 \sf \boxed{\text{\bf Surface area of sphere = $4\pi r^2$}}

                                           = 4*3.14 * 7 * 7

                                           = 615.44 cm²

b) r= 8.4 cm

     Volume = \dfrac{4}{3}\pi r^3

                  \sf =\dfrac{4}{3}*\dfrac{22}{7}*8.4*8.4*8.4\\\\= 2483.7 \ cm^3

   Surface area = 4*3.14*8.4*8.4

                         = 887.04 cm²

<h3>Hemisphere:</h3>

      a) r = 6 cm

     \sf \boxed{\text{\bf Volume of hemisphere =$\dfrac{2}{3} \pi r^3$}}

                                                \sf =\dfrac{2}{3}*3.14*6*6*6\\\\= 452.16 \ cm^3

        \sf \boxed{\text{\bf Surface area of hemisphere=3 \pi r^2}}\sf \boxed{\text{\bf Surface area of hemisphere = $3 \pi r^2$}}

                                                            = 3 * 3.14 * 6 * 6

                                                             = 339.12 cm²

                                                           

                       

3 0
2 years ago
What does the expression I+ w + i + w represent
Zinaida [17]
For example:
L plus W
3 plus 6= 9
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(this is just an example)
7 0
3 years ago
Simplify 3/5(10g-5k)-(-3g+2k)
dybincka [34]

Answer:

9g -5k

Step-by-step explanation:

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3 years ago
Simplify the expression (-8/15)+(1/15)
Mice21 [21]
If it is fractions then the answer is -7/15. Think of as 8/15 - 1/15 except the answer is a negative number

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Can some help me with this .
PtichkaEL [24]

Answer:

1. 169π ft²

2. 144π in²

3) 25π yd²

Step-by-step explanation:

1) π * 13²

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2) π * 12²

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units = in²

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units = yd²

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