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olga nikolaevna [1]
3 years ago
6

Darien ordered a soda for $2.75, a sandwhich for $8.50, and a dessert for $3.85. Sales tax was $1.15. Whats the total amount of

the bill?
Mathematics
1 answer:
Anestetic [448]3 years ago
5 0
Add 2.75 + 8.5+ 3.85 +1.15 and you get 16.25. Hope this helped! :)
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The price of a computer component is decreasing at a rate of 15% per year.
Alex_Xolod [135]

Answer:

  • exponential
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Step-by-step explanation:

Usually, this wording means the decrease is proportional to the current price, characteristic of an exponential function.

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The decay factor is 1-(decay rate), so is 1-0.15 = 0.85. After 3 years, the value has been multiplied by this factor 3 times:

  $50×0.85³ ≈ $30.71 . . . . cost in 3 years

_____

<em>Comment on percent per year</em>

Less often, the indicated decrease is intended to be <em>that percentage of the original price</em>. The result is that the price decreases by a constant amount each year, a linear decrease. This condition most often arises in conjunction with figuring depreciation in value for tax or accounting purposes.

The upshot is that you always need to be careful to understand what the base of a percentage is intended to be.

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3 years ago
jason has a binder in his locker that is 2 inches wide. which if the following is equivalent to inches
Tom [10]
Centimeters. or the Metric System.
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3 years ago
Stella rewrites −212+3.7 as 3.7−212. Which property did she use? A. Additive Identity Property B. Additive Inverse Property C. C
lyudmila [28]

Answer:

Option C.

Step-by-step explanation:

It is given that Stella rewrites −212+3.7 as 3.7−212.

We need to find which property did she use.

According to commutative property of addition,

A+B=B+A

Where, A and B are any real values.

In the given expression −212+3.7, A=-212 and B=3.7.

Using commutative property of addition, we get

(-212)+3.7=3.7+(-212)

(-212)+3.7=3.7-212

So, she used commutative property.

Therefore, the correct option is C.

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vagabundo [1.1K]

length =88cm

breadth=21cm

when it is rolled it becomes cylinder

having circumference 88cm

2πr=88cm

r=88×7/44

r=14

h=21

total surface area of the cylinder =2πr(r+h).

=2×22/7×14(14+21)

=3080cm²

8 0
3 years ago
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What is the exact value of cot (3 pi/4) ?
tia_tia [17]

Step-by-step explanation:

Cot of 3pi 4

The exact value of cot(π4) cot ( π 4 ) is 1 . Multiply −1 by 1 .

8 0
3 years ago
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