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inn [45]
3 years ago
6

Please help and thank you

Mathematics
2 answers:
Mariana [72]3 years ago
7 0

Answer:

B.    l = (S - πr^2) / πr

Step-by-step explanation:

S = πrl + πr^2 solve for l

πrl = S - πr^2

  l = (S - πr^2) / πr

Answer is B.    l = (S - πr^2) / πr

german3 years ago
3 0

Solve for L (get L by itself)

S = πrl + πr²    First subtract πr²

S - πr² = πrl    Then divide πr to get L by itself

(S-πr²) ÷ (πr) = l    Your answer is B

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Eric has 12 trophies in his room 9 of them are for football what percentage of the total number of sports trophies are his footb
olya-2409 [2.1K]

Answer:

75%

Step-by-step explanation:

9 ÷ 12 = 0.75 = 75%

7 0
3 years ago
115 + ( -215 ) + 315 + ( -415) + 515 + ... + 3915 + ( -4015 ) =
Likurg_2 [28]
215 because you would add and subtract the numbers as you go them you come out with your answer
5 0
4 years ago
Read 2 more answers
A pigpen is to be enclosed using 640 m of fencing along three of its sides, the fourth side being a barn. Determine the dimensio
Basile [38]

Answer:

W_{max}=480m\\ L_{max}=160m

Step-by-step explanation:

Since we know we only have 640 feet of fence available, we know that L + W + L = 640, \implies 2L + W = 640. This allows us to represent the width, W, in terms of L: W = 640 – 2L

Remember, the area of a rectangle is equal to the product of its width and length, therefore,

A_{\rm pigpen}=L(640-2L)\implies 640L-2L^2

Notice that, quadratic has been vertically reflected, since the coefficient on the squared term is negative, so the graph will open downwards, and the vertex will be a maximum value for the area.

recall,

  • x_{max}=-b/2a
  • f(x)_{max}=f(x_{max})

Since our function is A(L)=640L-2L², we get

  • a=-2
  • b=640

plug in the value of a and b into the first formula:

L_{max}=-(640)/2(-2)\implies 160

A(L)_{max}=640(160)-2(160)^2\implies 76800

hence,the dimensions of the pen that will maximize the area are<u> </u><u>L=</u><u>1</u><u>6</u><u>0</u><u>m</u><u> </u>and<u> </u><u>W=</u><u>7</u><u>6</u><u>8</u><u>0</u><u>0</u><u>/</u><u>1</u><u>6</u><u>0</u><u>=</u><u>4</u><u>8</u><u>0</u><u>m</u>

and we're done!

3 0
2 years ago
Someone please help me. ASAP
gizmo_the_mogwai [7]

Answer: x=10

Step-by-step explanation:

1/5(x-2)=1/10(x+6)

1/5x -2/5=1/10x + 6/10

        +2/5             +2/5

1/5x =1/10x + 1

-1/10   -1/10  

1/10x= 1    divide both sides by 1/10

x= 10

3 0
3 years ago
2.) Find the measure of exterior angle X:
Oxana [17]
ANSWER:
try 110 , sorry if that’s wrong
6 0
3 years ago
Read 2 more answers
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