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kenny6666 [7]
3 years ago
10

The probability that a person chosen at random is at least 15 years old is

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

80%

a friend gave me the answer but I lost the work sorry :/

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I dont understand how to do this inequality 4x +6 <-6
Mama L [17]
4x + 6 < -6

First, subtract 6 from both sides. / Your problem should look like: 3x < -6 - 6
Second, simplify -6 - 6 to -12. / Your problem should look like: 3x < -12
Third, divide both sides by 4. / Your problem should look like: x < -\frac{12}{4}
Fourth, simplify \frac{12}{4} to 3. / Your problem should look like: x < -3

Answer: x < -3
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3 years ago
What is the solution of the equation?-10 + sqrt x+8 = -4
pantera1 [17]
D:x+8\geq0\to x\geq-8\\\\-10+\sqrt{x+8}=-4\ \ \ /+10\\\\\sqrt{x+8}=-4+10\\\\\sqrt{x+8}=6\iff x+8=36\\\\x=36-8\\\\x=28\in D
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3 years ago
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natulia [17]
The Answer I think is 21
5 0
3 years ago
What is the value of cose in the diagram below?
Nuetrik [128]

Answer:

cos \theta = 0.6

Step-by-step explanation:

Draw a line from point ( 0.6, 0.8 ) to the X - axis, forming a right triangle with hypotenuse = r = 1 , adjacent = 0.6,  opposite = 0.8

cos \theta = \frac{adjacent}{hypotenuse} , \ where  \  adjacent = 0.6 ,\  hypotenuse \  = r= 1

cos \theta = \frac{0.6}{1}\\\\cos \theta = 0.6\\\\\theta = cos^{-1} \ 0.6\\\\\theta = 53.13^\circ

3 0
2 years ago
A fence must be4 built to enclose a rectangular area of 45,000ft squared. Fencing material costs $1 per foot for the two sides f
Luda [366]
1 foot on the north and south sides and 22,499 feet on the other two sides<span />
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3 years ago
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