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hichkok12 [17]
2 years ago
9

BIU A

Mathematics
1 answer:
marta [7]2 years ago
5 0

how many classes are there?

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Convert 6 4/5 to an improper fraction.
Marina86 [1]
6 4/5 as improper fraction is 34/5

5 3/4 as improper fraction is 23/4

3 1/3 by 25/4 is 8/15

14/3 by 3 1/2 is 4/3

3 1/4 by 5 1/2 is 13/22
7 0
3 years ago
8h+7=6h-8 plz hurrrrryyyyyy and hellp
Kazeer [188]

Answer:

h=  −15  /2

Subtract 6h from both sides.

Subtract 7 from both sides.

Divide both sides by 2.

3 0
3 years ago
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
If m< BOE = 130 degrees and m< cob = 80 degrees
hjlf

Answer:

then what?

Step-by-step explanation:

do we have to find the angle?

all I know is every right triangle is equal to 90°

6 0
3 years ago
What is the equation of this graphed line? Enter your answer in slope-intercept form in the box. -6,-3 6,-7
-BARSIC- [3]
The answer is at the bottom hope this helps

7 0
3 years ago
Read 2 more answers
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