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2 years ago

Does anyone know the answer to these 2 questions they both have to be rounded to the nearest tenth and you’re only solving for x

Mathematics

1 answer:

Sophie [7]2 years ago

6 0

Answer:

1) 24.2 = x 2) 27.8 = x

Step-by-step explanation:

1) Find the cos 21 degrees

cos 21 = x/26 Simplify

0.93 = x/26 Multiply 0.93 and 26

24.2 = x

2) Find the sin 33 degrees

sin 33 = 15/x Simplify

0.54 = 15/x Divide both sides by 0.54

27.8 = x

If these answers are correct, please make me Brainliest!

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Answer: The probability that the project will be completed in 33 days or less is equal to 0.73 .

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We assume that this is a normally distribution.

Given : The critical path length is 30 days .

i.e. Population mean = $\mu=30$

Variance : $\sigma^2=25$

Then, standard deviation : $\sigma=\sqrt{25}=5$

Z-score : $z=\dfrac{x-\mu}{\sigma}$

The value of z corresponding to 33 = $z=\dfrac{33-30}{5}=0.6$

Now, the p-value = $P(x\leq33)=P(z\leq0.6)=0.7257469\approx0.73$

Hence, the probability that the project will be completed in 33 days or less is equal to 0.73.

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