2 years ago

8x + 2y = 30 7x + 2y = 24 Solve the system of equations

Mathematics

1 answer:

Stels [109]2 years ago

6 0

Answer:

X=6, y=-9

Step-by-step explanation:

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If your car gets 26 miles per gallon, how much does it cost to drive 300 miles when gasoline costs $2.80 per gallon?

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That is around 11 gallons for 300 miles so it will cost about $30.80.

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3 years ago

During a sale, CDs that normally cost $6.98 each were priced at 2 for $12.50. Pete bought 4 CDs at the sale price. How much mone

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Answer:

2.92

Step-by-step explanation:

Normal price

4 * 6.98 =27.92

Sale price

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3 years ago

Need help DUE TOMORROW HELL! Don’t get

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The side of the square is 4 cm since 4x4= 16

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3 years ago

For what values of K does x2+kx+9=0

Airida [17]

Answer:

$k = 6$

Step-by-step explanation:

$x {}^{2} + kx + 9 = 0$

here,

a = 1,

b = k

c = 9

now,

$D = b {}^{2} - 4ac$

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4 0

3 years ago

What is the equation of the following graph?

nignag [31]

Answer:

${y}^{2} = 24x$

Step-by-step explanation:

This is horizontal parabola.

It has a directrix at x=-6.

The vertex is (0,0).

The focus is (6,0)

The equation of this parabola is of the form

${y}^{2} = 4px$

Where (p,0) is the focus

By comparison, p=6

Therefore the equation of the parabola is

${y}^{2} = 4 \times 6x$

This implies that

${y}^{2} =2 4 x$

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3 years ago