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Kitty [74]
2 years ago
10

I need help please help me

Mathematics
1 answer:
Akimi4 [234]2 years ago
5 0
V= 5/14 or .3571
hope this helps :)
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60% of what number is 75
kramer
60\% \ of \ x =75 \\\\ \frac{60}{100}*x=75\\\\ \frac{6}{10}=\frac{75}{x} \\\\ \frac{3}{5}*\frac{75}{x} \\\\ x=\frac{5*75}{3} \\\\ x=5*25 \\\\ \boxed{x=125}
8 0
3 years ago
The amount of time needed for a certain machine to process a job is a random variable with mean EXi = 10 minutes and Var(Xi)=2 m
lana66690 [7]

Answer:

0.98732

Step-by-step explanation:

Given that :

Mean = 10 minutes

Variance = 2 minutes

For less than equal 40 jobs

Mean (m) = 40 * 10 = 400 minutes

Variance = 2 * 40 = 80 minutes

Standard deviation (s) = √variance = √80

Converting hours to minutes

X = 60 * 7 = 420 minutes

P(X≤ 420) :

Z = (x - m) / s

P(X≤ 420) :

Z = (420 - 400) / √80

Z = 20 / √80 = 20 / 8.9442 = 2.236

P(Z ≤ 2.236) = 0.98732

4 0
3 years ago
the cost y (in dollars) for x pounds of deli meat is represented by the equation y=3.5x, graph the equation
wel

Answer:

I don't have the graph, but I'll explain what you need to do. Plot a point with the coordinates (1,3.5), (2,7), (3,10.5), and (4,14). Now draw a straight line connecting al these pints but don't go past the origin into the negative as in this situation it is not possible. There! Now you have a graph :)

8 0
2 years ago
Help me please!!!!!!!!!!
Inessa05 [86]

Answer:

A

Step-by-step explanation:

Use the quadratic formula

8 0
3 years ago
Tell whatever the fraction 4 / 10 is in the simplest form (yesor no)
Umnica [9.8K]
No, it's simplest form would be 2/5.
8 0
3 years ago
Read 2 more answers
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