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pav-90 [236]
3 years ago
13

Find a center of mass of a thin plate of density delta equals 5δ=5 bounded by the lines y equals xy=x and x equals 0x=0 and the

parabola y equals 20 minus x squaredy=20−x2 in the first quadran
Mathematics
1 answer:
kow [346]3 years ago
5 0

Answer:

center of mass

X = \frac{my}{m} = \frac{28}{19}

Y = \frac{mx}{m} = \frac{872}{95}

Step-by-step explanation:

y = x and x = 0

parabola ; y = 20 - x^2

attached below is the detailed solution

M = \frac{152}{3}б

Mx =  \frac{6976}{15}б

My = \frac{224}{3}б

X = \frac{my}{m} = \frac{28}{19}

Y = \frac{mx}{m} = \frac{872}{95}

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the letter "T" makes up an estimated 8% of a certain language. Assume this still correct. A random sample of 1000 letters is tak
rusak2 [61]

Answer:

0.242

Step-by-step explanation:

p = 0.08, q = 1 − p = 0.92, and n = 1000.

The mean and standard deviation are:

μ = p = 0.08

σ = √(pq/n) = 0.00858

The z score is:

z = (x − μ) / σ = -0.70

Using a calculator or z score table, the probability is:

P(Z < -0.70) = 0.242

8 0
3 years ago
Big Time Movers charges an initial fee of $24.50, plus $12.75 an hour for their moving services. On holidays, they charge 2.5 ti
stiv31 [10]
2.5(12.75x + 24.50) = 188.75
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x = 4....they worked 4 hrs
5 0
3 years ago
Read 2 more answers
The angle measures and/or side lengths of a triangle are described. Determine whether the conditions given
allsm [11]

Answer:

no such tryangle

Step-by-step explanation:

the sum of any 2 sides must be grater then the 3ed

3 0
3 years ago
Please give me the answer (click on file) ​
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Step-by-step explanation:

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2 years ago
Amanda spent a total of 70 minutes competing her chores this week. Write and solve an equation to represent the number of minute
gtnhenbr [62]

Answer:

28 minutes spent in washing the dishes.

Step-by-step explanation:

Given the table

Chore             time in minutes

Sweeping           42

Dishes                  ?

Amanda spent a total of 70 minutes competing her chores this week

Total of 70 minutes spent

42 minutes spent in sweeping . to find the number of minutes Amanda spent in washing the dishes , subtract 42 minutes from the total time spent

let x be the number of minutes spent washing the dishes

42+x=70

To solve for x , subtract 42 from both sides

42+x=70\\x= 70-42\\x=28

28 minutes spent in washing the dishes.

4 0
3 years ago
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