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2 years ago

12 2/5 - 4 4/6 in whole numbers & fractions

1 answer:

6 0

12 2/5 - 4 4/6 = ?
Whole number: It cannot be a whole number, since it is a repeating decimal. As a repeating decimal, it is 7.7333333333333 and so on. If you round it to the ones place, it would become 8. As a simplified decimal, it would be 7.7

Fraction: 7 11/15

HOPE THIS HELPED. ;-)

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2 years ago

Write the equation of the circle graphed below.

Darina [25.2K]

Answer:

Your equation is $(x - 1)^2 + (y +1)^2 = (\frac{1}{2} )^2$

Step-by-step explanation:

Well, the center origin of the circle is given (h,k) = (1,-1).

We have to find our radius as they gave us a point. from origin to the edge of the circle.

Using the formula: (x - h)^2 + (y - k)^2 = r^2

Plug in our (h,k) = (1,-1) and (x,y) = (0.5,-1) to solve for radius.

(x - h)^2 + (y - k)^2 = r^2

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(-0.5)^2 + (0)^2 = r^2

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1 year ago

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Yuliya22 [10]

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3 years ago

2. Shawn has to pay 5% sales tax on his $500 purchase. How much tax will<br> Shawn pay?

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3 years ago

Read 2 more answers

In a recent poll, 35% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Supp

Schach [20]

Answer:

we have that z = 1.8326 which is not close to z factor of 0. The result is not within limits.

Step-by-step explanation:

Following normal approximation to binomial we have

mean = n×p

standard deviation = √(n×p×(1-p))

n is equal to 160

p is equal to 35%

n×p is equal to 150×0.35 = 52.5

this is the probability that you would expect based on the knowledge that 35% of survey respondents said they would prefer a boy than a girl.

in your survey you got 74 out of 150 and you want to know if this is statistically significant or if you can expect this deviation by chance.

standard deviation is calculated as √(n×p× (1-p))which becomes

√ (150×0.35×0.75 = 6.2749 which is more than enough accuracy for what is required.

without a continuity correction, your formula would be:

z (74 > 52.5) = (population mean - sample mean) / population standard deviation which becomes (74-52.5)/6.2749 = 1.8326

this is not close to a z factor of 0 which means that the results are not within limits.

with a continuity correction, your formula would be:

z (52.5 > 52.5) = 0

A z factor of zero means that your sample mean is exactly the population mean.

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3 years ago