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3 years ago

15

the relative frequency that the traffic lights will show RED at road works is 0.2. Estimate how many times they will show RED ov

er the next 40 journeys.

2 answers:

tensa zangetsu [6.8K]3 years ago

8 0

Only 8 times because you take .2 times 40

adell [148]3 years ago

7 0

Yes you multiply 40*0.2 and that would be 8.

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Answer:

Neither.

Step-by-step explanation:

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3 years ago

Read 2 more answers

Solve the following linear programming problem by applying the simplex method to the dual problem.

Law Incorporation [45]

Answer:

Objective Function: P = 2x + 3y + z

Subject to Constraints:

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Step-by-step explanation:

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3 years ago

Please help :((((((

Alik [6]

Answer: c)

Step-by-step explanation:

This can be done through trial-and-error. Use the pythagoreas' theorem $a^{2} +b^{2} =c^{2}$ and if the left side of the equation is equal to the right, that is the answer.

(Do take note that c is the longest side.)

a)

$0.07^{2} +2.4^{2} =5.7649$

$2.5^{2}=6.25$

Since $2.5^{2} \neq 5.7649$ , a) is wrong.

b)

$17^{2} +30^{2} =1189\\
34^{2} =1156$

Since $34^{2}\neq1189$ , b) is wrong.

c) (answer)

$5^{2} +12^{2} =169\\13^{2} =169$

Since $13^{2} =169$ , c) is correct.

d)

$(7x)^{2} +(12x)^{2} =193x^{2}\\(13x)^{2} =169x^{2}$

Since $(13x)^{2} \neq193x^{2}$ , d) is wrong.

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2 years ago

Is .277277277 irrational

prisoha [69]

Nope. Your problem is not irrational

4 0

3 years ago