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photoshop1234 [79]
2 years ago
13

A function f() is graphed on the coordinate plane.

Mathematics
1 answer:
Mkey [24]2 years ago
7 0

Answer:

i dont know but some one will help freeee points

Step-by-step explanation:

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The dot plot shows how much hairdressers in Margot's area charge for a woman's haircut. The least expensive cut is $25. Margot d
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Find the equation of the line.<br> Use exact numbers.<br> y =<br> X +
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Answer:

y =  \frac{3}{4} x - 2

Step-by-step explanation:

Remmeber this:

slope =  \frac{rise}{run}

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2 years ago
Find the determinant of this matrix:
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-1

Step-by-step explanation:

Formula to the determinant is:

\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] = ad-bc

0(0)–1(1)

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1 year ago
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Một lô hàng chứa rất nhiều sản phẩm, trong đó tỷ lệ sản phẩm loại tốt là 70%. chọn ngẫu nhiên từ lô hàng ra 5 sản phẩm. gọi X là
den301095 [7]

trả lời : lâp bảng

X=0 thì xác suất lấy ra được sản phẩm tốt là 5*30%=1,5%

X =1 thì xác suất lấy ra được là 1* 70%*4*30%=0,84%

X=2 thì xác suất lấy ra được sản phẩm tốt là 2*70%*3*30%=1,26%

X=3 thì xác suất lấy ra được sản phẩm tốt là 3*70%*2*30%=1,26%

X=4 thì xác suất lấy ra được sản phẩm tốt là 4*70%*1*30%=0,84%

X=5 thì xác suất lấy ra được sản phẩm tốt là 5*70%=3,5%

X 0 1 2 3 4 5

P 1,5 0,84 1,26 1,26 0,84 3,5

b,

E(x)= 1,5*0+ 0,84*1+1,26*2+1,26*3+0,84*4+3,5*5=28

E(x^2)=1,5*0^2+0,84*1^2+1,26*2^2+1,26*3^2+0,84*4^2+3,5*5^2=118,16

===> V(x)= (E(x))^2-E(x^2)=28^2-118,16=665,84

8 0
3 years ago
When multiplying numbers with the same base you________ the exponents.
sp2606 [1]

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add

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