3 years ago

Help im confused reading this problem makes me dizzy

Mathematics

1 answer:

Vesnalui [34]3 years ago

8 0

Answer: G

Step-by-step explanation:

because I would be 15 and not 20

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Two-digit natural numbers are formed, with replacement, from the digits 0 through 9.

Karo-lina-s [1.5K]

Just do 99-45 and you would get 54. 54 two digit numbers are greater than 45.

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3 years ago

Tewanda read 2,000 word news article in 8 minutes. How fast did she read the news article? Explain how you found your answer.

Blababa [14]

Answer:

She read 250 words per minute.

Step-by-step explanation:

Simply divide the words read by the time took to read that amount = (2000/8) words per minute = 250 words per minute.

Hope this helped!

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if Andy's home is worth 260,000, what is his coverage for personal property if insurance covers 50 percent?

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An item is priced at $13.12. If the sales tax is 5%, what does the item cost including sales tax?

disa [49]

Answer:

$13.78

Step-by-step explanation:

to get the tax, you multiply $13.12 by 0.05, which would be 0.656. then you add that to the original price of 13.12 and round it up to get your answer

7 0

3 years ago

Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credi

adoni [48]

Answer:

$r = 4$

The center is:

(2, -4)

Step-by-step explanation:

We have the following equation

$x^2 - 4x + y^2 + 8y = -4$

The general equation of a circle has the following form

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

Where r is the radius and the point (h, k) is the center of the circle

To transform the given equation in the general equation of a circumference we must use the method of square completions

Step 1

$(x^2 - 4x) + (y^2 + 8y) = -4$

Step 2

Add and subtract $(\frac{b}{2})^2$ For an equation of the form

$ax^2 +bx +c$

$(x^2 - 4x +4)-4 + (y^2 + 8y +16) -16= -4$

Step 3 Factor the expressions within the parentheses

$(x-2)^2-4 + (y+4)^2 -16= -4$

Step 4 Simplify

$(x-2)^2 + (y+4)^2= -4+16+4$

$(x-2)^2 + (y+4)^2= 4^2$

Finally

$r = 4$

The center is:

(2, -4)

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3 years ago