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3 years ago

A bookstore sells used books for $8 each. Let n represent the number of books. The cost for n books is 8 xn or 8n.

Mathematics

1 answer:

zalisa [80]3 years ago

6 0

The unknown quantity is the books

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Hoochie [10]

Answer:

ML=17

Step-by-step explanation:

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#IndianMurga(. ❛ ᴗ ❛.)

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2 years ago

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There are exactly five rows with two primes in them. Which rows are these?

Neko [114]

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3 years ago

Find the vertex, focus, and directrix. y = 1/24(x+1)² - 3.

Vedmedyk [2.9K]

$y = \frac{1}{24}(x+1)^2 - 3\\\\y+3 =\frac{1}{24}(x+1)^2\ \ / *24\\\\ (x+1)^2 = 24(y+3)$

This is an equation of a parabola that opens upwards.

$Its \ standard \ form: \\(x-h)^2=4p(y-k)\\ (h,k)=(x,y) \ coordinates \ of \ the \ vertex\\\ (h,k)=(-1,-3) \\\\axis \ of \ symmetry: \ x= -1\\ \\4p=24\ \ /:4\\p=6$

$focus:(h,k+p)=(-1,-3+6)=(-1,3) \\ \\directrix: \ y=k-p=-3-6=-9$

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4 years ago

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NEEP HELP ASAP!!!!!!!!!!!!!!!!!!!!!

stealth61 [152]

Step-by-step explanation:

sin 25 = 15 / xz

xz = 15/ sin 25

xz = 35.49

tan w = 35.49 / 22

w =58.15

8 0

2 years ago

A square has a side that measures 5.5 units. What is the area of a circle with a circumference that equals the perimeter of the

Alexeev081 [22]

Answer:

Answer choice A) About 38.47 square units

Step-by-step explanation:

Since all four sides of a square have the same length, the perimeter of a square is just 4 times one of the side lengths. The perimeter of the square and therefore the circumference of the circle is 5.5*4=22. The circumference of a circle is 2 times the radius multiplied by pi. The radius of this circle is therefore:

$\dfrac{22}{2\pi}\approx 3.503$

Since the area of a circle is $\pi r^2$ , the area of this circle is:

$\pi \cdot 3.503^2= 3.14\cdot 12.271\approx 38.47$

Hope this helps!

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3 years ago