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tia_tia [17]
3 years ago
14

How do you find the area of a circle in terms of pi?

Mathematics
2 answers:
Kaylis [27]3 years ago
7 0
A=πr2? Im not really sure though.


LiRa [457]3 years ago
7 0
<span>πr^2 will find the area of a circle</span>
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Given that f(x) = x2 - 16 and g(x) = 20 - x, find (f-g)-4),
zavuch27 [327]

( {x}^{2}  - 16) - (20 - x) - 4  \\ =  {x}^{2}  + x - 40

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2 years ago
A house and lot together cost more than $89,000. The house cost $1000 more than seven times the cost of the lot. How much does t
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3 years ago
Give the area of a rectangle that has a length of 8 and a width of 9.
frez [133]

Answer:

72

Step-by-step explanation:

  1. L × W = A
  2. 8 × 9 = A
  3. 8 × 9 = 72

I hope this helps!

6 0
2 years ago
Kaylin bought a soda and two bags of popcorn for $3.00 . HER brother bought three sodas and a bag of popcorn for $6.50
Veseljchak [2.6K]

Answer: price of soda (a) = $2 and price of popcorn (b) = $0.5

Step-by-step explanation:

Let's denote soda = a and popcorn = b

Kaylin bought a soda and two popcorn, writing out an equation for this would be

a + 2b = $3...........equation (i)

And her brother bought 3 sodas and 1 popcorn.

3a + b = $6.50..........equation (ii)

From equation (i),

a + 2b = 3

Making a the subject of formula,

a = 3 - 2b......equation (iii)

Using substitution reaction, put equation (iii) into equation (ii)

3(3 - 2b) + b = $6.50

9 - 6b + b = 6.50

9 - 5b = 6.50

Collecting like terms,

5b = 9 - 6.50

Divide both sides by 5,

b = 5.

Put b = 5 into equation (i)

a + 2(0.5) = 3

a + 1 = 3

a = 2

Therefore, the price of soda is $2 per one and $0.5 for each popcorn.

4 0
3 years ago
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