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Solnce55 [7]
4 years ago
14

Convert 15/9 to a decimal. A. 1.64 B. 1.67 C. 1.66 D, 1.69

Mathematics
1 answer:
Travka [436]4 years ago
7 0
15/9 = 1.6666... (where 6 repeats infinitely)

If we're rounding to 2 decimal places, 6 will round up to 7

Therefore, B. 1.67 is your answer
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The area of an equilateral triangle is LaTeX: 108\sqrt[]{3}\:ft^2 108 3 f t 2 . What is the length of one side of the triangle?
Temka [501]
The length of one side is 12√3.

We know that the area of a triangle is given by the formula:

A=1/2(b)(h)

We can substitute the area in:
108√3 = 1/2(b)(h)

Let b be the side of the equilateral triangle.  To find the height, we will use the Pythagorean theorem.  We know that the height bisects the base, so we will call that leg of the right triangle formed (1/2b).  Since the triangle is equilateral, we will call the hypotenuse b as well.  We now have:

(\frac{1}{2}b)^2+h^2=b^2
\\
\\\frac{1}{4}b^2+h^2=b^2
\\
\\\frac{1}{4}b^2+h^2-\frac{1}{4}b^2=b^2-\frac{1}{4}b^2
\\
\\h^2=\frac{3}{4}b^2
\\
\\\sqrt{h^2}=\sqrt{\frac{3}{4}b^2}
\\
\\h=\frac{\sqrt{3}}{2}b

We will now substitute this in the formula for area we had above:
108√3=(1/2)(b)(√3/2b)
108√3=√3/4b²

Multiply both sides by 4:
(108√3)×4=(√3/4b²)×4
432√3=√3b²

Divide both sides by √3:
432√3/√3 = √3b²/√3
432=b²

Take the square root of both sides:
√432=√b²

Simplifying the radical, we have 12√3.
7 0
4 years ago
Change 59/23 into a mixed number
PIT_PIT [208]

59/23 into a mixed number is 2 13/23

7 0
4 years ago
If G is the circumcenter of triangle ABC, find CG and FB. Round to the nearest tenth if necessary.
Stolb23 [73]

9514 1404 393

Answer:

  CG = 19

  FB = 14.7

Step-by-step explanation:

The circumcenter is equidistant from the triangle vertices, so GA = GB = GC.

The length of GA is given, so we have ...

  GA = 19 = CG

__

Then the Pythagorean theorem can be used to find FB.

  FB² +FG² = GB²

  FB² = GB² -FG² = 19² -12² = 217

  FB = √217 ≈ 14.7

3 0
3 years ago
Which statements are true? Check all that apply
const2013 [10]
Read the paragraph, then go back and see which of the points match up and which don’t
7 0
3 years ago
Explain how to write an equivalent expression using fhe associative property. 2+ (11 + y)
kow [346]

The associative property of addition is a property which allows terms in an addition expression to be "switched around." For example, the addition property says that the following two expressions are equal:

5 + (4 + 3)

(5 + 4) + 3


Applying this to this problem, we can move the parentheses to cover the 2 + 11 to make a new expression, as shown below:

2 + (11 + y) = (2 + 11) + y


A new expression could be (2 + 11) + y.


3 0
3 years ago
Read 2 more answers
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