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Anon25 [30]
3 years ago
10

Every 3rd person at a concert receives a free t-shirt. Every 10th person receives a free keychain. Which person will be the firs

t to receive both?
Mathematics
1 answer:
pogonyaev3 years ago
4 0
The thirtieth person will receive a free t-shirt and Keychain.
3 × 10 = 30
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A cube has an edge length of 18m. What is its volume, in cubic m?
Scorpion4ik [409]

For this case we have that by definition, the volume of a cube is given by:

V = l ^ 3

Where:

l: It's the side of the cube

According to the statement we have:

l = 18 \ m

Substituting we have:

V = 18 ^ 3\\V = 5832 \ m ^ 3

Thus, the volume of the cube is 5832 \ m ^ 3

ANswer:

The volume of the cube is 5832 \ m ^ 3

4 0
3 years ago
The Center of circle (x-5)^2 + (y-13)^2=81 is (-5,-13). True or false!! thanks
Mumz [18]
False. because.....

the equation of a circle is (x-h)^2 + (y-k)^2 = r^2 and the center is (h,k) 
if the center of a circle is (-5, -13) substitute the values into the equation 
so....(x- -5)^2 + (y- -13)^2 = r^2  which is (x+5)^2 + (y+13)^2 = r^2 

in this case, because you are only asking about the center of the circle from the equation the 81 or radius of the circle doesn't matter. 
3 0
3 years ago
Find the volume of the prism.
7nadin3 [17]

Answer:

168 units^3

Step-by-step explanation:

The volume of triangular prism is calculated like this : 1/2 × b×h×l (b: base, h: height, l: length)

1/2 × 7 × 6 × 8 = 168 units^3

5 0
3 years ago
After the closing of the mill, the town of Sawyerville experienced a decline in its population.
ycow [4]

Step-by-step explanation:

P(t) = 12,000 (2)^(-t/15)

9,000 = 12,000 (2)^(-t/15)

0.75 = 2^(-t/15)

ln(0.75) = ln(2^(-t/15))

ln(0.75) = (-t/15) ln(2)

-15 ln(0.75) / ln(2) = t

t = 6.23

5 0
3 years ago
F(x) = 2x+1/×-1 find the inverse function
denis23 [38]
To factor this, start by replacing x with y and then solve for y
f(x) = \frac{2x+1}{x - 1}
x = \frac{2y+1}{y - 1}
(y-1)x = \frac{2y+1}{y - 1} * (y-1)
(y-1)x = 2y+1
xy -x = 2y+1
xy - 2y -x +x = 2y - 2y +x+1
xy - 2y = x+1
Factor out y on the left side. 
\frac{xy - 2y}{y} = x+1
y(x - 2) = x+1
\frac{y(x - 2)}{(x-2)} = \frac{x+1}{x-2}
y = \frac{x+1}{x-2}
f(x)^{-1} = \frac{x+1}{x-2}

3 0
3 years ago
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