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joja [24]
3 years ago
10

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!

Mathematics
1 answer:
Contact [7]3 years ago
6 0
Which one to do cuz it’s confused
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Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was
frozen [14]

Answer: 101.69

Step-by-step explanation:

Formula we use to find the z-score :-

z=\dfrac{x-\mu}{\sigma}    (1)

Given : \mu=90

\sigma=7

Daniel's z score : z= 1.67

Let x be the raw score for Daniel's exam grade, then substitute the values of \mu,\ \sigma\ and \ x in (1), we get

1.67=\dfrac{x-90}{7}\\\\\Rightarrow\ x-90=7\times1.67\\\\\Rightarrow\ x=11.69+90=101.69

Hence, the raw score for Daniel's exam grade = 101.69

3 0
2 years ago
Graph y = -1/3x + 3<br><br> (( if you could include a picture of the graph that would be great))
Kay [80]
A place I go to graph is go to desmos.  It works well for this. All you have to do is snip the picture of your graph
6 0
3 years ago
There are 250 economy class seats on board. The airline sells some economy class seats at a discount price of $440 in advance an
Drupady [299]

Answer:

Check the explanation

Step-by-step explanation:

Cost of over reserving full cost tickets, Co = $440 ( empty seats as we cannot get even the discounted revenue)

Cost of under reserving Cu = 770-440 = $330 ( because you sell more discounted tickets)

Now critical ratio = Cu / (Cu+Co) = 330/770 = 0.42857

Now for above critical ratio ,z = -0.18 ( refer standard normal distribution table)

Optimal protection level = mean +z*standard deviation = 100-0.18*25 = 95.5 = 96

The possible costs include: all the above. You may need to provide compensation to passenger and make alternative travel arrangements. Also passenger won't be happy by over booking and their will be loss of good will.

3 0
3 years ago
50 is 20% of what number
Tresset [83]
20% of a number is 1/5th of it so 50 × 5 is 250
6 0
3 years ago
The temperature that milk is pasteurised to kill off most germs:
Ipatiy [6.2K]

Answer:

160 degrees Fahrenheit for 15 seconds

Step-by-step explanation:

Conventionally, milk is pasteurized, or heated at high temperatures to kill harmful germs, at roughly 160 degrees Fahrenheit for 15 seconds. While pasteurization kills most germs, it does not wipe out bacterial spores, the dormant versions of the germs, which are extremely resistant to any form of destruction.

8 0
2 years ago
Read 2 more answers
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