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3 years ago

Find the rational number that does not lie between 5/12 and 3/4

Mathematics

1 answer:

Irina18 [472]3 years ago

6 0

Answer:

7/8

Step-by-step explanation:

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1. If your final exam counts as 20% of your semester grade in a class, and you have an 88% going into the final, what percent mu

zysi [14]

.8 (88%)+.2x=90%
70.4%+.2x=90%

subtract 70.4% from 90% to get 19.6%
make the .2x into 2 and the 19.6 into 196
divide 196 by 2 to come up with the answer of 98%.
you will need a 98% to have a 90% for the final grade

4 0

3 years ago

Read 2 more answers

Based on past experience, a telemarketing firm has found that calls to prospective customers take an average of 2.0 minutes, wit

xenn [34]

Answer: Our required probability would be 0.9641.

Step-by-step explanation:

Since we have given that

Number of hours he works a day = 8

So, Number of minutes he worked in a day = $8\times 60=480\ minutes$

Number of calls = 220

So, Average $=\bar{x}=\dfrac{480}{220}=2.18\ minutes$

Standard deviation $=s=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1.5}{\sqrt{220}}=0.10$

Mean = μ = 2.0 minutes

Standard deviation = σ = 1.5 minutes

Using the normal distribution, we get that

$z=\dfrac{\bar{x}-\mu}{s}\\\\z=\dfrac{2.18-2.0}{0.10}\\\\z=1.8$

So, the probability that Albert will meet or exceed his quota would be

$P(X\leq 2.18)=P(z\leq 1.8)=0.9641$

Hence, our required probability would be 0.9641.

6 0

3 years ago

A 40<br> B 160<br> C 80<br> D 60

IceJOKER [234]

Answer:

ithink its A miight be wrong tho hope it helps in someway ig idk

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the ratio in simplest form.<br> 30:6

Lunna [17]

Answer:

5:1

Step-by-step explanation:

30:6 divided by 6 is 5:1

6 0

3 years ago

ur a HS photographer taking pictures fir 2 classes of 21 students each. on average, each individual pic takes 3 minutes and a cl

goblinko [34]

2 classes of 21 students each
21 × 2 classes = 42 students in total
42 × 3 mins = 126 minutes for 42 students
10 mins for 2 class pics = 20 minutes
126 + 20 = 146 minutes = 2 hours and 26 minutes

It should take 146 minutes (2 hours and 26 minutes) to take all the pictures.

6 0

3 years ago