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I am Lyosha [343]
3 years ago
10

How do you find the area of a circle?​

Mathematics
2 answers:
sveta [45]3 years ago
5 0

Answer:

A=πr^2

Step-by-step explanation:

A=Area

r=Radius

yan [13]3 years ago
5 0
To find the area of a circle you use pi(r)^2
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2.The base of a rectangular pyramid has dimensions 3 feet by 9 feet. The height of the pyramid is 11 feet.
Andre45 [30]
The answer would be 170 i think

8.5 times 10 divided by 3 and times 6
5 0
3 years ago
Solve for the zeros of the quadratic function f(x) = 9x2 + 6x + 1. Write the answer as a fraction.
CaHeK987 [17]

Answer:

x = -1/3

Step-by-step explanation:

x = [-6 +- squareRoot(36-4x9)] / 2 times (-6)

= -6/18 = -1/3

x-(-1/3) = 0 ---> x = -1/3

6 0
3 years ago
Read 2 more answers
-10x+1+7x=37<br> X=-15<br> X=-12<br> X=12<br> X=15
Andrei [34K]

Answer:use math-way it will give the answer

Step-by-step explanation:

7 0
3 years ago
The coffee Lily likes is composed of 97.3% water and 2.7% cocoa. The coffee John likes is composed of 96% water and 4% cocoa. Ho
mestny [16]

30 ounces of the coffee John likes consists of

  • 0.96\cdot30=28.8 ounces of water
  • 0.04\cdot30=1.2 ounces of cocoa

To this mixture we're adding x ounces of water, so that the new mix has a total volume of 30+x ounces and matches the composition of the coffee Lily likes. This means it would consist of

  • 0.973\cdot(30+x)=28.8+x ounces of water
  • 0.027\cdot(30+x)=1.2 ounces of cocoa (same amount of cocoa as before because pure water is being added)

Solve for x:

0.973(30+x)=28.8+x\implies29.12+0.973x=28.8+x

\implies0.39=0.027x

\implies x\approx14.4

###

Just to confirm: the new mixture consists of

  • 28.8+14.4=43.2 ounces of water
  • 1.2+0=1.2 ounces of cocoa

giving a total volume of 43.2+1.2=44.4 ounces of coffee, and \dfrac{43.2}{44.4}\approx0.973, as required.

4 0
3 years ago
Tim has m dollars . Rebecca has $6 dollars less than 1 over 10 times the number of dollars that Tim has which expression represe
grin007 [14]

y= 1/10x - 6

Which if you plug in 70 for x, y equals 1.

Rebecca has $1 and Tim has $70, together they have $71.

8 0
3 years ago
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