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Feliz
2 months ago
15

In a single line of people waiting to purchase tickets for a movie, there are currently 10 people behind Shandra. If 3 of the pe

ople who are currently in line ahead of Shandra purchase tickets and leave the line, and no one else leaves the line, there will be 8 people ahead of Shandra in line. How many people are in the line currently?A. 21B. 22C. 23D. 24E. 25
Mathematics
1 answer:
Svet_ta [12.7K]2 months ago
8 0

Response:

the Response is b

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Tiffany sells two kinds of homemade tomato sauce. A quart of her Tuscan sauce requires 6 tomatoes and 1 cup of oil. A quart of h
Svet_ta [12734]

Let x denote the quarts of Tuscan sauce and

y denote the quarts of marinara sauce that Tiffany produces.

Each quart of Tuscan sauce requires 6 tomatoes and 1 cup of oil

Hence, x quarts need 6x tomatoes and 1x cups of oil

For marinara sauce, a quart requires 5 tomatoes and 1.25 cups of oil

Thus, y quarts will require 5y tomatoes and 1.25y cups of oil

She has a stock of 45 tomatoes and 10 cups of oil available.

The constraints are:

6x + 5y

1x + 1.25y < = 10

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3 months ago
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Find the average value of the function f(x, y, z) = 5x2z 5y2z over the region enclosed by the paraboloid z = 4 − x2 − y2 and the
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The paraboloid intersects the x-y plane when x²+y²=9, defining a circle with a radius of 3, centered at the origin.

<span>Utilizing cylindrical coordinates (r,θ,z), the paraboloid transforms into z = 9−r² and f = 5r²z. </span>

<span>If F represents the average of f over the area R then F ∫ (R)dV = ∫ (R)fdV </span>

<span>∫ (R)dV = ∫∫∫ [θ=0,2π, r=0,3, z=0,9−r²] rdrdθdz </span>

<span>= ∫∫ [θ=0,2π, r=0,3] r(9−r²)drdθ = ∫ [θ=0,2π] { (9/2)3² − (1/4)3⁴} dθ = 81π/2 </span>


<span>∫ (R)fdV = ∫∫∫ [θ=0,2π, r=0,3, z=0,9−r²] 5r²z.rdrdθdz </span>

<span>= 5∫∫ [θ=0,2π, r=0,3] ½r³{ (9−r²)² − 0 } drdθ </span>

<span>= (5/2)∫∫ [θ=0,2π, r=0,3] { 81r³ − 18r⁵ + r⁷} drdθ </span>

<span>= (5/2)∫ [θ=0,2π] { (81/4)3⁴− (3)3⁶+ (1/8)3⁸} dθ = 10935π/8 </span>

<span>Thus, F = 10935π/8 ÷ 81π/2 = 135/4</span>
3 0
2 months ago
Michael started a savings account with $300. After 4 weeks, he had $350 dollars. And after 8 weeks, he had $400. What is the rat
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The response is $12.50. This might not be correct, but it's worth testing.
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Complete the statements about the system of linear
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Seventy-five cars sit on a parking lot. Thirty have stereo systems, 30 have air conditioners and 40 have sun roofs. Thirty of th
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Response:

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Detailed explanation:

Let’s denote the quantity of cars with stereo systems as N(ss), those with air conditioning as N(ac), and those with sunroofs as N(sr).

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N(ss) = 30

N(ac) = 30

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To calculate how many cars possess at least one feature (N(at least one) or N(ss or ac or sr)), we apply:

N(ss or ac or sr) = N(ss) + N(ac) + N(sr) - N(ss and ac) - N(ss and sr) - N(ac and sr) + N(ss and ac and sr)

N(ss or ac or sr) = 30 + 30 + 40 - (N(at least two) + 2*N(ss and ac and sr)) + 15

Substituting, we find N(ss or ac or sr) = 30 + 30 + 40 - (30 + 2*15) + 15 = 55

b.

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N(only one) = 55 - 30 = 25

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