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Alik [6]
3 years ago
9

Please Help ASAP C: :D

Mathematics
2 answers:
Triss [41]3 years ago
5 0

Answer:

-21/10

Step-by-step explanation:

Plug in 4/5 for x and simplify.

-2/5 - 4/5 + (-9/10)

-6/5 + (-9/10)

-21/10 or -2 1/10

I hope this helps :))

Tom [10]3 years ago
3 0

Answer:

-21/10

Step-by-step explanation:

-2/5 - 4/5 + (-9/10) = -6/5 -9/10 = -12/10 -9/10 = -21/10

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Solve the inequality 9/2 + v > 7/5
statuscvo [17]

Answer:

the answer is -31/20

Step-by-step explanation:

4 0
2 years ago
I think the answer might be 2 1/3, square root of 5,2.5, and square root of 8
Marat540 [252]

Answer:

Step-by-step explanation:

We will squared each, we will find

49/9 5 6.25 8 then the correct order

Square root 5

2 1/3

2.5

Square root 8

5 0
3 years ago
The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi
lara [203]

Answer:

a) 33.33%)

b) 135 minutes

c) 8.66 min

d) 50%

Step-by-step explanation:

a) the probability for a uniform distribution is

P(b<X<a) = (a-b)/(c-d) , where c and d are the maximum and minimum values

therefore the probability that the flight is more than 140 minutes ( and less than 150 since it is the maximum value)

P(140<X<150) = (a-b)/(c-d) = (150-140)/(150-120) = 10/30 = 1/3 (33.33%)

b) the mean (expected value) for a uniform probability distribution is

E(X) = (c+d)/2 = (120+150)/2 = 135 minutes

c)  the standard deviation for a uniform probability distribution is

σ²(X)= (c-d)²/12 = (150-120)²/12 = 75 min²

σ = √75 min² = 8.66 min

b) following the same procedure as in a)

P(120<X<135) = (a-b)/(c-d) = (135-120)/(150-120) = 15/30 = 1/2 (50%)

4 0
3 years ago
How many surfaces does a rectangular prism have?
juin [17]
A rectangular prism has 6 surface.
4 0
3 years ago
(Another Question from meh since Imma dum kid) How do you know when you can stop looking for factors of a number?
alina1380 [7]

stop? STOP??? WHEN U WANT TO HAHAHAHA

4 0
3 years ago
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