3 years ago

The area of a square rug can be represented by the expression of 100x²+60x+9.

Mathematics

1 answer:

kati45 [8]3 years ago

7 0

100x^2+60x+9=(10x+3)^2

so length of each side is 10x+3.

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Priya drew a circle whose area is 25 cm. Dan drew a circle whose diameter is 4 times the radius of Priya's circle. How many time

Vitek1552 [10]

Answer:

400

Step-by-step explanation:

first work out the radius of priya's circle with the equation a = $\pi r^{2}$

$25 = \pi r^{2}$

$\frac{25}{\pi } = r^{2}$

$r = \sqrt{\frac{25}{\pi } }$

we know the diameter of a circle is 2 times the radius so the diameter of priya's circle is 2x $\sqrt{\frac{25}{\pi } }$

this means that if the diameter of dan's circle is 4 times bigger it must be

8x $\sqrt{\frac{25}{\pi } }$

to find the radius of dan's circle we divide the diameter by to 2 to give

4x $\sqrt{\frac{25}{\pi } }$

then use the a= $\pi r^{2}$ equation again

$a= (4 \sqrt{\frac{25}{\pi } })^{2} \pi$

which equals 400

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2 years ago

What is the value of x so that the ordered pair (x, 1) is a solution to the equation 3x - y = 17?

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3x-y=17
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x=6

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2 years ago

David estimates that he will have expenses totaling $24,870 for one year of college, He will receive$7,560 in grants. Howmuch wi

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Since there are 2 semesters per year we have:

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David would have to contribute $8,655 per semester.

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3 years ago

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Answer:

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Step-by-step explanation:

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