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Novosadov [1.4K]
3 years ago
14

What is the formula for the area of a circle, a=πsup(r,2) as function?

Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Area (a) as a function of radius (r) might be written

a(r) = πr²

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You and a group of 7 friends go out for pizza. One large pizza and 3 medium drinks cost $21.96. One large pizza and 6 medium dri
Doss [256]

Answer:

Step-by-step explanation:

x = cost of drink

y = total cost

First information: "one large pizza and 3 medium drinks cost $21.96":

3a + b = 21.96

Second information: "one large pizza and 6 medium drinks cost $30.93":

6a + b = 30.93

{3a + b = 21.96

{6a + b = 30.93

{- 3a - b = - 21.96

{6a + b = 30.93

3a = 8.97

a = 2.99

3a + b = 21.96

3•2.99 + b = 21.96

8.97 + b = 21.96

b = 21.96 - 8.97

b = 12.99

Each drink costs $2.99 and each pizza costs $12.99. The linear function rule is:

y = 2.99x + 12.99

I hope I've helped you.

8 0
3 years ago
Determine the domain and range for the inverse of f(x)=1/3x - 1
marishachu [46]

Answer:

all work is shown and pictured

4 0
3 years ago
Help asap thank you .
frosja888 [35]

Answer:

2

Step-by-step explanation:

count up 2 count right 1, 2/1

2/1 = 2

3 0
2 years ago
Which is the equation of Line B?
notka56 [123]
  • Slope-Intercept Form: y = mx + b, with m = slope and b = y-intercept
  • Slope Formula: \frac{y_2-y_1}{x_2-x_1}

So firstly, to find the slope of this equation, plug the two points, (1,1) and (-3,2), into the slope formula and solve as such:

\frac{1-2}{1-(-3)}=-\frac{1}{4}

Next, plug either one of the points into the x and y coordinates to solve for b as such:

2=-\frac{1}{4}*-3+b\\2=\frac{3}{4}+b\\\frac{5}{4}=b

<u>Our final equation is y=-\frac{1}{4}x+\frac{5}{4} , or the third option.</u>

8 0
3 years ago
How do I simplify this??
alina1380 [7]
Idk i can't see that, sorry
8 0
3 years ago
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