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ExtremeBDS [4]
3 years ago
13

Thời gian để sản xuất một sản phẩm loại A là một BNN tuân theo luật phân phối chuẩn với các tham số m = 15 và s= 2 (đơn vị là ph

út). Tính khoảng thời gian cần thiết để sản xuất một sản phẩm loại A bất kỳ
Mathematics
1 answer:
ser-zykov [4K]3 years ago
8 0

Answer:

A= -u²n²t²s²arme²

Step-by-step explanation:

Evaluate m, then set it equal to 15.

=15

Evaluate s, the set it equal to 2.

=2

Simplify unitsareminutes.

−u²n²t²s²arme²

List all the solutions.

BN•N=BN²

m=15 ==15

s=2 2==2

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A carpenter wants to build a rectangular box with square sides in which to put round things. the material for the bottom costs $
alexira [117]

Answer:1.627\times 1.627\times 1.88\ ft^3

Step-by-step explanation:

Given

Suppose side face have a dimension of l\times l

and width of h

volume V=l^2\cdot h

h=\frac{V}{l^2}

volume V=5 ft^3

Area of side wall is A_s=l^2

Area of top Wall A_t=l\times h

Area of bottom A_b=l\times h

Cost of bottom wall c_b=20\times l\times h=20lh

Cost of top wall c_t=50\times l\times h=50lh

Cost of side walls c_s=4\times l^2\times 10=40l^2

total cost C=c_s+c_t+c_b=20lh+50lh+40l^2

C=70lh+40l^2

C=70\times l\times \frac{5}{l^2}+40l^2

differentiate C w.r.t l to get minima or maxima

\frac{\mathrm{d} C}{\mathrm{d} l}=0

-\frac{350}{l}+80l^2=0

l^3=\frac{350}{80}

l=1.627 ft

h=\frac{5}{2.648}

h=1.88 ft

Dimension of Box is 1.627\times 1.627\times 1.88\ ft^3

5 0
3 years ago
The ratio of pink roses bushes to white rose bushes in the city Garden is about 12 to 15. If there were 92 pink rose bushes, abo
andreyandreev [35.5K]

Answer:

115\ white\ rose\ bushes

Step-by-step explanation:

Let

x------> the number of pink roses bushes

y----> the number of white rose bushes

we know that

\frac{x}{y} =\frac{12}{15}

y=\frac{15}{12}x -----> equation A

x=92

substitute the value of x in the equation A

y=\frac{15}{12}(92)=115\ white\ rose\ bushes


8 0
3 years ago
10) 28n4 + 16n? – 80n² = 0<br> Factoring quadratic
Setler79 [48]

Answer:

2n(14n^2+3)=28n^4+16n I'm not sure if you meant to put the question mark between or not but I did it separately for -80^2=0 n would equal zero hope this helped

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the output please help
konstantin123 [22]

Answer:

x=90 y=24

Step-by-step explanation:

I'm pretty sure if you're using slope this should be it.

7 0
3 years ago
Read 2 more answers
Find the measure of angle a
balu736 [363]
The answer is C. Thats the measure
5 0
3 years ago
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