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Reil [10]
3 years ago
5

Pls answer with explanation!

Mathematics
1 answer:
patriot [66]3 years ago
4 0

Answer:

3,750 cars.

Step-by-step explanation:

We are given that the equation:

y=9000-2.4x

Models the relationsip between <em>y</em>, the number of unfilled seats in the stadium, and <em>x</em>, the number of cars in the parking lot.

We want to determine the number of cars in the parking lot when there are no unfilled seats in the stadium.

When there are no unfilled seats in the stadium, <em>y</em> = 0. Thus:

0=9000-2.4x

Solve for <em>x</em>. Subtract 9000 from both sides:

-2.4x=-9000

Divide both sides by -2.4:

x=3750

So, there will be 3,750 cars in the parking lot when there are no unfilled seats in the stadium.

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8 0
3 years ago
The difference of two is 4. The larger is 8 less than twice the smaller. What are the two numbers ?
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Answer:

{12, 16}

Step-by-step explanation:

The difference of two <em>numbers (x and y)</em> is 4.  Thus, if y is the larger, then y - x = 4.  Also, y = 2x - 8.

So we need to solve the system of linear equations

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Subbing 2x - 8 for y, in the first equation, we get  (2x - 8) - x = 4, or

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5 0
3 years ago
Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students
Alex17521 [72]

Answer:

85.7

Step-by-step explanation:

Given that two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.

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Section B total score 20*90 = 1800

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Hence overall mean = \frac{3000}{35} \\=85.7143

rounding off to one decimal place

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Step-by-step explanation:

\frac{11}{15}  =

73%

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If A+B = 76 &amp; A -B = 38 What is A/B?
Igoryamba
A+B=76\\&#10;A-B=38\ \ --->\ \ A=38+B\\\\&#10;38+B+B=76\\&#10;38+2B=76\ \ | subtract\ 38\\2B=38\ \ \ | divide\ by\ 2\\&#10;B=19\\A=57\\\\&#10;\frac{A}{B}=\frac{57}{19}=3
3 0
3 years ago
Read 2 more answers
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