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3 years ago

15

Need help urgent!!!

1 answer:

Inessa [10]3 years ago

8 0

3/10.

3/1 times 1/10.
Equals 3/10

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If 4 raffle tickets is 6 dollars how much is 1 raffle ticket

sertanlavr [38]

4/6 = 1/x cross multiple so x= 1.5 dollars

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3 years ago

a parabola has an x-intercept at 2, its axis of symmetry is the line x=4, and the y-coordinate of its vertex is 6. Determine the

nlexa [21]

Answer:

The standard equation of the parabola is:

$y=-\frac{3}{2}x^2+12x-18$

Step-by-step explanation:

An x intercept of 2 means that the point (2, 0) is in the graph of the parabola.

We can also write the general expression for the parabola in vertex form, since we can use the information on the coordinates of the vertex: (4, 6) - recall that the axis of symmetry of the parabola goes through the parabola's vertex, so the x-value of the vertex must be x=4.

$y-y_{vertex}=a\,(x-x_{vertex})^2\\y-6=a\,(x-4)^2$

Now we can find the value of the parameter "a" by using the extra information about the point (2, 0) at which the parabola intercepts the x-axis:

$y-6=a\,(x-4)^2\\0-6=a\,(2-4)^2\\-6=a\,4\\a=-\frac{6}{4} =-\frac{3}{2}$

Then the equation of the parabola becomes:

$y-6=-\frac{3}{2} \,(x-4)^2\\y-6=-\frac{3}{2} (x^2-8x+16)\\y-6=-\frac{3}{2}x^2+12x-24\\y=-\frac{3}{2}x^2+12x-18$

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3 years ago

A 20% acid solution is mixed with 20 liters of a 45% acid solution. How much of a 30% acid solution will result?

vaieri [72.5K]

Answer:

50 liters

Step-by-step explanation:

If x is the volume of 20% acid, then:

x (0.20) + 20 (0.45) = (x + 20) (0.30)

0.2x + 9 = 0.3x + 6

3 = 0.1x

x = 30

30 liters of 20% acid are needed, so there will be a total of 50 liters of 30% acid.

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3 years ago

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If you meant “112” years the answer is $6,839.28, if you actually meant 112112 the answer is $6,846,119.28

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3 years ago

a carpebter has a board 2 meter needs to cut it in 8 equal pieces how many centerimeters long will each piece be

likoan [24]

2 centerimeters each

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3 years ago