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Bezzdna [24]
3 years ago
5

You have a glass paperweight that is shaped like a cone. The diameter of the paperweight is 7 centimeters. The slant height is 4

centimeters. Find the surface area of the cone. Use 3.14 to approximate pi.
Mathematics
1 answer:
Nutka1998 [239]3 years ago
7 1
43.96cm is the right answer
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Which equation has no solution?
sladkih [1.3K]

Answer:

-2(6-3x)=-12+6x

Step-by-step explanation:

If you do the distributive property first and look at the other side of the = sign they are the same, which means that the answer would be x=x, which isn't a solution.

8 0
3 years ago
A soccer field is a rectangle 100 meters wide and 130 meters long. The coach asks players run from one corner to the other corne
velikii [3]

Answer:

164.0123 meters

Step-by-step explanation:

√(130^2 + 100^2)

the diagonal of rectangle is the hypotenus

7 0
2 years ago
How many elements does A contains if it has 64 subsets​
Amanda [17]
<h3>Answer:  6</h3>

===========================================================

Explanation:

Rule: If a set has n elements in it, then it will have 2^n subsets.

For example, there are n = 3 elements in the set {a,b,c}. This means there are 2^n = 2^3 = 8 subsets. The eight subsets are listed below.

  1. {a,b,c} .... any set is a subset of itself
  2. {a,b}
  3. {a,c}
  4. {b,c}
  5. {a}
  6. {b}
  7. {c}
  8. { } ..... the empty set

Subsets 2 through 4 are subsets with exactly 2 elements.  Subsets 5 through 7 are singletons (aka sets with 1 element). The last subset is the empty set which is a subset of any set. You could use the special symbol \varnothing to indicate the empty set.

For more information, check out concepts relating to the power set.

-------------------

The problem is asking what value of n will make 2^n = 64 true.

You could guess-and-check your way to see that 2^n = 64 has the solution n = 6.

Another approach is to follow these steps.

2^n = 64\\\\2^n = 2^6\\\\n = 6

Which is fairly trivial.

Or you can use logarithms to solve for the exponent.

2^n = 64\\\\\text{Log}\left(2^n\right)=\text{Log}\left(64\right)\\\\n*\text{Log}\left(2\right)=\text{Log}\left(64\right)\\\\n=\frac{\text{Log}\left(64\right)}{\text{Log}\left(2\right)}\\\\n\approx\frac{1.80617997398389} {0.30102999566399} \ \text{ ... using base 10 logs}\\\\n\approx5.99999999999983\\\\

Due to rounding error, we don't land exactly on 6 even though we should.

5 0
2 years ago
PLEASE ANSWER I WILL MARK BRAINLIST
Charra [1.4K]

Answer:

1.1/8

2.because multiply the numerator by the reciprocal of the denominator

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A certain type of cereal costs $3.79 for 19.5 ounces. What is the unit rate?
Radda [10]

Step-by-step explanation:

$3.79 ÷ 19.5 = .194

answer = $.19 per oz

6 0
2 years ago
Read 2 more answers
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