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gladu [14]
3 years ago
14

Can Someone Evaluate This

Mathematics
2 answers:
Murrr4er [49]3 years ago
6 0
The answer is B. 9
Hope this helps
HACTEHA [7]3 years ago
4 0
<h3>Answer:  B) 9</h3>

Explanation:

Replace x with 4. Then use PEMDAS to simplify fully.

y = (14+x) \div 2\\\\y = (14+4) \div 2\\\\y = 18 \div 2\\\\y = 9\\\\

When using PEMDAS, we evaluate the stuff in the parenthesis first. Afterward we divide.

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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
What is the sign of sum and product
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Answer:

Look below

Step-by-step explanation:

Sigma (summation) and Pi (product) notation are used in mathematics to indicate repeated addition or multiplication

\pi

Hope this helps

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The length of the arc intercepted by a central angle is the ratio of the angle to 360 degrees times the circumference. From the given values above,
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                                 S = π
The angle intercepted an arc which measures π feet. The answer is letter A. 
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3 years ago
Read 2 more answers
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finlep [7]

Answer:

c. 166

Step-by-step explanation:

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