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vovangra [49]
3 years ago
10

" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
zimovet [89]3 years ago
4 0
The answer is 2√2

√18 - √2
3 √2 - √2 = 2√2
Alex787 [66]3 years ago
4 0

Answer:

2√2

Step-by-step explanation:

18 factors down to 3 * 3 * 2

The rule for taking the square root of a number factored into primes is if they are in pairs, take one of the pairs out of the root sign and throw the other one away. Any odd number of primes always has one prime left under the root sign.

3√2 - √2    

Root 2 is a common factor on either side of the minus sign.

√2*(3 -1)

√2 * 2

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In a circle an arc length 10 is intercepted by a central angle of 2/3 radius
djverab [1.8K]

We have been given that in a circle an arc length 10 is intercepted by a central angle of 2/3. We are supposed to find the radius of the circle.

We will use arc-length formula to solve our given problem.

l=r\theta, where,

l = Arc length,

r = Radius,

\theta = Central angle corresponding to arc length.

Upon substituting our given values in arc-length formula, we will get:

10=r\cdot \frac{2}{3}

10\cdot \frac{3}{2}=r\cdot \frac{2}{3}\cdot \frac{3}{2}

5\cdot \frac{3}{1}=r

15=r

Therefore, the radius of the given circle would be 15 units.

5 0
3 years ago
I have no idea what to do help
Step2247 [10]

Answer:

8.50(43) + 10.50(6.5)=$433.75

Step-by-step explanation:

4 0
3 years ago
Could somebody please help me I dont understand how to do this problem
forsale [732]
So a triangle has a total of 180 degrees
107 + 2x-5 +x = 180
solve for x
112 + 3x = 180
-112           -112
3x = 68
x = 22.6667 degrees
4 0
4 years ago
Read 2 more answers
You roll a six sided die. You are given $8 if a 6 comes up, $2 if a 3, 4, 5 comes up, and
Dovator [93]

We want to get the expected value for the given experiment. We will see that the expected value is $2.33

For an experiment with outcomes {x₁, ..., xₙ} each one with probability {p₁, ..., pₙ} the expected value is defined as:

EV = x₁*p₁ + ... + xₙ*pₙ

Here we have 3 outcomes:

  • x₁ = winning $8
  • x₂ = winning $2
  • x₃ = winning $0.

For x₁ we need to roll a 6, this is a probability of 1 out of 6, then:

p₁ = 1/6

For x₂ we need to roll a 3, 4, or 5 (3 out of 6), then:

p₂ = 3/6

For x₃ we need to roll a 1 or a 2 (2 out of 6) so the probability is:

p₃ = 2/6

Then the expected value is:

EV = $8*(1/6) + $2*(3/6) + $0*(2/6) = $2.33

If you want to learn more about expected values, you can read:

brainly.com/question/15858152

5 0
2 years ago
the length of a rectangle is 6 inches more than the width. if the perimeter is 64 inches, what are the length and the width
Natasha2012 [34]
W = width 
<span>w + 6 = length </span>
<span>2w + 2(w + 6) = 64 </span>
<span>2w + 2w + 12 = 64 </span>
<span>4w = 64 - 12 = 52 </span>
<span>w = 52 ÷ 4 so see what that is and plug it in to answer the question.</span>
6 0
4 years ago
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