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Nady [450]
3 years ago
14

How many square inches of tin are needed to make the top of a can that is 10 inches in diameter? A) 62.8 in2 B) 78.5 in2 C) 227

in2 D) 314 in2
Mathematics
2 answers:
Xelga [282]3 years ago
8 0
Area of a circle = PI*radius^2
10 inch diameter = 5 inch radius
Area = PI* 5^2
Area = <span> <span> <span> 78.5398163397 </span> </span> </span>
Answer is B)


vlabodo [156]3 years ago
6 0
<h2>Answer:</h2>

<u>The correct answer is </u><u>B) 78.5</u>

<u></u>

<h2>Step-by-step explanation:</h2>

As we know that

Area of a circle = π (r) ²

Radius will be 1/2d

Radius is 5 inches

So putting the values

Area = 3.14* 25

Area = 78.5398163397  

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If a car uses one gallon of gas every 25 miles how much miles would he make with 8 gallons
FrozenT [24]

Step-by-step explanation:

One gallon = 25 miles

8 gallon= 25×8 miles= 200 miles

4 0
3 years ago
Eliminating by multiplying <br> X+3y=1<br> -5x+4y=-24
gavmur [86]

Answer:

y = -1         x = 4

Step-by-step explanation:

(X+3y=1) 5            Multiply this equation by 5 to cancel out the x

-5x+4y=-24

-5x + 4y= -24

+ 5x + 15y = 5       Add both equations together

19y = -19                Divide both sides by 19

y = -1

Plug -1 for y into one of the equations

x + 3(-1) = 1             Multiply 3(-1)

x - 3 = 1

 + 3 + 3                  Add 3 to both sides

x = 4  

If this answer is correct, please make me Brainliest!

3 0
3 years ago
Oops sorry yall theres the stuff
Ann [662]
Answer:

B. 42 - (-26)

Explanation:
5 0
3 years ago
Read 2 more answers
Which answer is an equation in point-slope form for the given point and slope? Point: (1,9); Slope:5
JulijaS [17]
I think ur right dood..lol good luck ;)
5 0
3 years ago
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How do the values in Pascal’s triangle connect to the coefficients?
damaskus [11]

Explanation:

Each row in Pascal's triangle is a listing of the values of nCk = n!/(k!(n-k)!) for some fixed n and k in the range 0 to n. nCk is <em>the number of combinations of n things taken k at a time</em>.

If you consider what happens when you multiply out the product (a +b)^n, you can see where the coefficients nCk come from. For example, consider the cube ...

  (a +b)^3 = (a +b)(a +b)(a +b)

The highest-degree "a" term will be a^3, the result of multiplying together the first terms of each of the binomials.

The term a^b will have a coefficient that reflects the sum of all the ways you can get a^b by multiplying different combinations of the terms. Here they are ...

  • (a +_)(a +_)(_ +b) = a·a·b = a^2b
  • (a +_)(_ +b)(a +_) = a·b·a = a^2b
  • (_ +b)(a +_)(a +_) = b·a·a = a^2b

Adding these three products together gives 3a^2b, the second term of the expansion.

For this cubic, the third term of the expansion is the sum of the ways you can get ab^2. It is essentially what is shown above, but with "a" and "b" swapped. Hence, there are 3 combinations, and the total is 3ab^2.

Of course, there is only one way to get b^3.

So the expansion of the cube (a+b)^3 is ...

  (a +b)^3 = a^3 + 3a^2b +3ab^2 +b^3 . . . . . with coefficients 1, 3, 3, 1 matching the 4th row of Pascal's triangle.

__

In short, the values in Pascal's triangle are the values of the number of combinations of n things taken k at a time. The coefficients of a binomial expansion are also the number of combinations of n things taken k at a time. Each term of the expansion of (a+b)^n is of the form (nCk)·a^(n-k)·b^k for k =0 to n.

6 0
3 years ago
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