3 years ago

1/4x + 6 = 1/2 (x+4)

Mathematics

1 answer:

gavmur [86]3 years ago

7 0

Answer:

Solution x=16

Step-by-step explanation:

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Simplify completely x^2+7x-30/x+10

marta [7]

Answer:

(x-3)

Step-by-step explanation:

we have

$\frac{x^{2}+7x-30}{x+10}$

step 1

Simplify the numerator

Complete the square

Equate the equation to zero

$x^{2}+7x-30=0$

$x^{2}+7x=30$

$x^{2}+7x+3.5^{2}=30+3.5^{2}$

$x^{2}+7x+12.25=42.25$

Rewrite as perfect squares

$(x+3.5)^{2}=42.25$

Take square root both sides

$(x+3.5)=(+/-)6.5$

$x=-3.5(+/-)6.5$

$x=-3.5(+)6.5=3$

$x=-3.5(-)6.5=-10$

therefore

$x^{2}+7x-30=(x-3)(x+10)$

substitute in the numerator

$\frac{x^{2}+7x-30}{x+10}=\frac{(x-3)(x+10)}{x+10}=x-3$

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4 years ago

The vertex of this parabola is at (4,-3). which of the following could be its equation?

Mama L [17]

The answer is A.
I used the formula for finding the vertex of a parabola and I got the first answer choice. So A is correct. :)

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11 divided by 634 in long division

Anni [7]

57.63 or 57.6
This works because you get 55 and then you’d get 84 so you’d multiply by 7. This would be 7 and you would put a decimal and carry a 0 so it would 70. So you’d end up with 57.6

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Answer:

Step-by-step explanation:

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Answer:

1 kilometre is 0.621 mile

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