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Svet_ta [14]
3 years ago
13

5. THINK SMARTER There are 246 children at

Mathematics
1 answer:
kherson [118]3 years ago
4 0

Answer:u can estimate 246 to 200 and u can estimate 328 to 300

Step-by-step explanation:

add 34

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Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle mai
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Answer: 1692

Step-by-step explanation:

Formula to find the sample size :

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

Given : Confidence level : (1-\alpha)=0.90

⇒ significance level =\alpha= 0.10

z-value for 90% confidence interval (using z-table)=z_{\alpha/2}=1.645

Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.

Let we take p= 0.5

Margin of error : E= 2%=0.02

Now, the required sample size will be :

n=0.5(1-0.5)(\dfrac{1.645}{0.02})^2

Simplify , we get

n=(0.25)(6765.0625)=1691.265625\approx1692

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A computer simulation tossed a 10 faced die 5 times. How many possible outcomes
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Answer:

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Step-by-step explanation:

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3 years ago
Find the Volume of this Cylinder. Diameter: 4.5m, Height: 6.5m Round to the nearest tenth.
sineoko [7]

Answer:

100

Step-by-step explanation:

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8 0
3 years ago
The midpoint of AB is M (2,0). If the coordinates of A are (7, -2), what
Lubov Fominskaja [6]

Answer:

The coordinates of point B are (-3,2)

Step-by-step explanation:

we know that

The formula to calculate the midpoint between two points is equal to

M(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

we have

M(2,0)\\(x_1,y_1)=(7,-2)

substitute

(2,0)=(\frac{7+x_2}{2},\frac{-2+y_2}{2})

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we have that

2=\frac{7+x2}{2}

4=7+x_2\\x_2=-3

Find the value of y_2

we have that

0=\frac{-2+y_2}{2}

0=-2+y_2\\y_2=2

therefore

The coordinates of point B are (-3,2)

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3 years ago
Explain to a friend how you would multiply 3x32.
denis-greek [22]

whip out a calculator punch in the numbers and yell at them to read the answer

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3 years ago
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