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Irina-Kira [14]
3 years ago
8

Which of the following represents "the difference between a number and eight is twenty-two"?

Mathematics
1 answer:
velikii [3]3 years ago
6 0
30(or x)-8=22 I don't know if that is one of the answers or not
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An 8-pack of toy cars costs $5.97. What is the unit price, rounded to the nearest cent? ​
Dennis_Churaev [7]

Answer:

$0.75 per toy car

Step-by-step explanation:

Divide 5.97 by 8

5.975/8=0.746875

Now round to the nearest cent which is the hundredths place

0.75

4 0
3 years ago
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A principal wants to know if their students are in favour of the new dress code. Would she take a sample from:
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4 years ago
Define a new random variable by y = 2px. show that, as p l 0, the mgf of y converges to that of a chi squared random variable wi
Mandarinka [93]
The moment generating function (mgf) of y is given by

M_y(t)=E(e^{ty})=E(e^{2pxt})=M_x(2pt)=p(1-e^{2pt}(1-p))^{-1}

Since the momoent generating function of x is given by M_x(t)=p(1-e^{t}(1-p))^{-1}

When p tends to 0, we have

\lim_{p \to 0} M_y(t)=  \lim_{p \to 0}  \frac{p}{1-e^{2pt}(1-p)} = \frac{0}{0}

Applying L'Hopital's rule we have:

\lim_{p \to 0} M_y(t)=\lim_{p \to 0} \frac{1}{e^{2pt}+2te^{2pt}+2pte^{2pt}} = \frac{1}{1+2t} , \ \ \ t\ \textless \  \frac{1}{2}

This shows that y converges to <span>a chi squared random variable with 2r degrees of freedom</span>.
5 0
4 years ago
a large cheese pizza coast $7.50. each additional topping for the pizza costs $1.35. if the total bill for the pizza sally order
Orlov [11]

Answer:

She ordered 4 toppings.

Step-by-step explanation:

7.5+1.35x=12.90

1.35x=12.9-7.5

1.35x=5.4

x=5.4/1.35

x=4

6 0
3 years ago
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What is the stem and leaf plot
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This is what a Stem and Leaf plot work. Do you know how to use it?

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