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AnnZ [28]
3 years ago
5

Two cars are 750 miles apart and start moving towards each other. One car moves with the average speed of 40 mph and the other i

s 10 mph faster. When will the cars meet if they started to move at 11:00 a.m.?
WILL GET BRAINIEST ANSWER
Mathematics
2 answers:
____ [38]3 years ago
5 0
They will meet at 10:45 exactly.
DanielleElmas [232]3 years ago
4 0

Answer:

7:20pm

Step-by-step explanation:

sorry don'

t have time to explain...

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A biotechnology company partially finances ongoing research projects at several North American universities. The annual support
Dafna1 [17]

Answer:

The probability that the support granted for 44 projects will not exceed the annual budget is P=0.691.

Step-by-step explanation:

The question is incomplete:

<em>A biotechnology company partially finances ongoing research projects at several North American universities. The annual support granted for each project is determined by the progress of the project and has a </em><em>mean of $22,115 and a standard deviation of $8,145</em><em>. The company has an </em><em>annual budget of $1,000,000</em><em> for supporting research activities. What is the probability that the support granted for </em><em>44 projects</em><em> will n</em><em>ot exceed the annual budget</em><em>? Carry your intermediate computations to at least four decimal places. Report your result to at least three decimal places.</em>

We have to calculate the parameters of the distribution of the sum of money for 44 projects.

We apply the rules for the sum of random variables for the mean and standard deviation.

\mu_s=n\mu=44*22,115=973,060\\\\\sigma_s^2=n\sigma^2\rightarrow \sigma_s=\sqrt{n}\sigma=\sqrt{44}*8,145=6.6332*8,145\\\\ \sigma_s=54,027.8178

We can calculate the probabilities of being under the budget as:

z=(X-\mu_s)/\sigma_s=(1,000,000-973,060)/54,027.8178\\\\z=26,940/54,027.8178=0.4986\\\\P(X

It is assumed that the sum of projects money will follow a normal distribution.

4 0
4 years ago
Simplify cos theta csc theta
mihalych1998 [28]

Answer:

cot theta

Step-by-step explanation:

t = theta

csc t = 1/ sin t

cos t . csc t = cos t / sin t = cot t

5 0
4 years ago
Convert 6¼ % into decimal<br>​
stellarik [79]

Answer:

6.75

Step-by-step explanation:

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3 years ago
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For the period 1990-2000, the amount of money, y (in billons of dollars) spent on advertising in the U.S. can be modeled by the
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Last week Sam had 31 dollars.He washed cars over the weekend and now has 98 dollars.How much money did he make washing cars? Par
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Answer:

Equation: 98 - 31 = 67

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