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KATRIN_1 [288]
3 years ago
15

A new school is ordering math text books. They are 3/4 of an inch thick. How many these books will fit into a book shelf that is

2 feet long.
Mathematics
2 answers:
soldi70 [24.7K]3 years ago
8 0

Answer:

Step-by-step explanation:

irina1246 [14]3 years ago
4 0

Answer:

32

Step-by-step explanation:

24 inches are 2 feet

3/4 x 32 = 24

24 inches = 2 feet

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Find the Circumference of a circle with a Diameter of 9 inches Group of answer choices 9 pi inches 9 pi inches^2 9 pi inches^3 1
katen-ka-za [31]

Answer: 9\pi\ in.

Step-by-step explanation:

Given

The diameter of a circle is d=9\ in.

So, the radius is r=\frac{d}{2}=4.5\ in.

The circumference is given by 2\pi r

Insert the values

\Rightarrow 2\pi \cdot 4.5\\\Rightarrow 9\pi \ in.

Thus, the circumference of the circle is 9\pi\ in.  

8 0
3 years ago
Sally finds a coin with a radius of 1.5 centimeters and a thickness of 0.25 cm. It has a measured mass of 18.54 grams. How can S
mote1985 [20]

Answer:

Silver

Step-by-step explanation:

Find the volume of the coin

<u>Volume of a cylinder</u>

\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • r = 1.5 cm
  • h = 0.25 cm

Substituting given values into the formula to find the volume:

\sf \implies V=\pi (1.5)^2(0.25)

\sf \implies V=0.5625 \pi \:cm^3

Find the density of the coin given it has a measured mass of 18.54 g

<u>Density formula</u>

\sf \rho=\dfrac{m}{V}

where:

  • \rho = density
  • m = mass
  • V = volume

Given:

  • m = 18.54 g
  • \sf V=0.5625 \pi \:cm^3

Substituting given values into the density formula:

\implies \sf \rho=\dfrac{18.54}{0.5625 \pi}

\implies \sf \rho=10.49149385\:g\:cm^{-3}

Given:

  • \textsf{Density of Lead}=\sf 11.3\:g\:cm^{-3}
  • \textsf{Density of Silver}=\sf 10.49\:g\:cm^{-3}

Therefore, as \sf \rho=10.49\:g\:cm^{-3} the coin is made from silver.

4 0
2 years ago
Solve for x in this circle.
Katen [24]

Answer:

Step-by-step explanation:

7*(7 + x+1) = 6*(x + 5 + 6)       {Intersecting secant theorem}

7 *(x + 8) = 6*(x + 11)

Distributive property,

7x + 56   = 6x + 66

Subtract 56 from both sides

7x = 6x + 66 - 56

7x = 6x + 10

Subtract 6x from both sides

7x - 6x = 10

x = 10

8 0
3 years ago
Whatttttt doesssss x equallllllll?
PilotLPTM [1.2K]

Answer: cos30

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Rachel can read 13 pages of a book in 4/5 of an hour. How many pages can she read in 4 hours?
garik1379 [7]

Answer:

my answer is 17 5/5

Step-by-step explanation: so what i did was that i add 13 and 4/5 but i can't add like that so i put 13/1 + 4/5 and they don't have the same denominator so i did 1 x 5 so if i do it on the bottom i have to do it on the top and so i did 13 x 5 and 13 x 5 is 65 and 1 x 5 is 5 and so my new fractions are 65/5 + 4/5  and i add both them and got 69/5 so i divided 69 and 5 and got 13 4/5 and then i add 69/5 plus 4 and turn the 4 into 4/1 and multiply 1 x 5 and have to do it on the top so 4 x 5 and got 20/5 and now add 69/5 + 20/5 and got 89/5 as my answer and divided 89 divided by 5 and got 17 5/5 and know it that is my answer.

hope it helps you!

4 0
3 years ago
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