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Vesnalui [34]
3 years ago
15

A student has homework assignments in each of his five daily classes he estimates that each assignment will take 30 minutes to c

omplete it if is estimate is correct what is the latest he can start to work so that he can finish in time to watch his favorite television show at 10 PM
Mathematics
1 answer:
olga_2 [115]3 years ago
6 0

Answer:

he has to start at 8:30 PM I think

Step-by-step explanation:

it's because you do 30*5 then you get the answer 150, then you will do 150/60 whitch will get you to 2.5 and I think 2.5 is 2 hours, and 30 minutes. Then you minius 2 hours, and 30 minutes to the 10 hours and you get 8:30 PM (I don't know if that's correct or not)

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The average speed of a car driving down freeway is 70mph with a standard deviation of 5mph. Thid speed is normally distributed.
ikadub [295]

Answer:

0.081,0.2621,0.645,0.919

Step-by-step explanation:

Let X be the average speed of a car driving down freeway

Given that X is normal with mean as 70mph with a standard deviation of 5mph.

To convert to Z score we do

Z =\frac{x-70}{5}

a)  the probability that a randomly selected car is driving more than 77mph

=P(X>77)\\=P(Z>1.4)\\=0.081

b) probability that a randomly selected car is driving between 65 and 69 mph

= P(-1

c) the probability that a randonly selected car is driving between 67 and 77mph

=P(-0.6

d) the probability that a randomly selected car is driving less than 77mph

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5 0
3 years ago
Ollie used 1/2 cup of vegetable oil to make brownies. She used another 1/3 of oil to make muffins. How much more oil did she use
disa [49]

Answer:

1/6 cups more

Step-by-step explanation:

1/2=3/6

1/3=2/6

3/6-2/6=1/6

8 0
3 years ago
Rewrite the expression in exponential form
zheka24 [161]

Answer:

x^{\frac{1}{4} }

Step-by-step explanation:

A root can be converted to a power by taking the base of the root (in this case 4) and making it 1 over that number, so in this case \frac{1}{4}

If it were the fifth root you would make it to the 1 over 5 power.  

6 0
3 years ago
What is 100 is 1/10 of
Veronika [31]
100 is 1/10 is of 1000.
5 0
4 years ago
Find the value of X.
PilotLPTM [1.2K]

As the complete angle is right angle that is 90°

So both the angles should add up to 90°

(3x+2) + (x+16)=90

combine the like terms

4x+18 = 90

Subtract 18 from both sides

4x= 72

divide both sides by 4

x=18

4 0
4 years ago
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