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2 years ago

Solve the system by elimination -6x + 6y = 0 9x - 8y = 4

Mathematics

1 answer:

Art [367]2 years ago

4 0

Answer:

x=4, y=4

Step-by-step explanation:

X=(4+8y)/9

-6×(4+8y)/9 +6y=0

-2×(4+8y)/3+ 6y=0

-2×(4+8y) + 18y =0

-8-16y+18y=0

2y=8

y=4

-6x+6×4=0

-6x=-24

x=4

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A one-year membership to Metro Gym costs $460 including is a fee of $100. How much will a customer pay monthly

Novosadov [1.4K]

They will pay 46.60 a month because 460+100=560 and 560/12=46.6

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2 years ago

What’s is x=5y for y

Margarita [4]

Answer:

$y=\frac{x}{5}$

Step-by-step explanation:

$\frac{x = 5y}{5}$

For the y to cancel out, you would have to divide y by 5. Whenever you do one thing to a side, you have to do the same on the other side. Once you do so, you'll get : $\frac{x}{5}$

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2 years ago

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What is f(x) = 7x2 + 42x written in vertex form?

amid [387]

Answer:

$\boxed{\boxed{y = 7(x+3)^2-63}}$

Step-by-step explanation:

The general vertex form of parabola is,

$y=a(x-h)+k$

where,

(h, k) is the vertex of the parabola.

The given function is,

$\Rightarrow f(x) = 7x^2 + 42x$

$\Rightarrow y = 7x^2 + 42x$

$\Rightarrow y = 7(x^2 + 6x)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3-3^2)$

$\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3)-7\cdot 3^2$

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$\Rightarrow y = 7(x+3)^2-63$

This is vertex form the given function.

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2 years ago

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A classroom has stadium seating. There are 10 seats in the first row, 13 seats in the second row, 16 seats in the third row and

Nikolay [14]

The right answer is “The classroom has 5,180 seats “

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2 years ago

1. There are 3,768 books on the library wall.

guapka [62]

Answer:

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Step-by-step explanation:

24 rows=3768 books

1 row=3768/24 books

=157 books

Therefore,Each row contains 157 books

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2 years ago