Respuesta es 7.4466666667
The asnwer is 7.4466666667
The vertex is the high point of the curve, (2, 1). The vertex form of the equation for a parabola is
.. y = a*(x -h)^2 +k . . . . . . . for vertex = (h, k)
Using the vertex coordinates we read from the graph, the equation is
.. y = a*(x -2)^2 +1
We need to find the value of "a". We can do that by using any (x, y) value that we know (other than the vertex), for example (1, 0).
.. 0 = a*(1 -2)^2 +1
.. 0 = a*1 +1
.. -1 = a
Now we know the equation is
.. y = -(x -2)^2 +1
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If we like, we can expand it to
.. y = -(x^2 -4x +4) +1
.. y = -x^2 +4x -3
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An alternative approach would be to make use of the zeros. You can read the x-intercepts from the graph as x=1 and x=3. Then you can write the equation as
.. y = a*(x -1)*(x -3)
Once again, you need to find the value of "a" using some other point on the graph. The vertex (x, y) = (2, 1) is one such point. Subsituting those values, we get
.. 1 = a*(2 -1)*(2 -3) = a*1*-1 = -a
.. -1 = a
Then the equation of the graph can be written as
.. y = -(x -1)(x -3)
In expanded form, this is
.. y = -(x^2 -4x +3)
.. y = -x^2 +4x -3 . . . . . . same as above
Answer: hello, your answer is -0.45
To make a fraction a percent, you have to divide the numerator by the denominator. You get a decimal. Multiply the decimal by 100 to get the percent or just move the decimal two places to the right.
So,
1.
Divide 1 by 5 and you get 0.20
Multiply 0.20 by 100. The answer is 20%
2.
Divide 2 by 3 and you get 0.6666.......
Multiply 0.6666..... by 100 and you get 66.6%
3.
Divide 1 by 40 and you get 0.025.
Multiply 0.025 by 100 and you get 2.5%
4.
Divide 4 by 8 and you get 0.5.
Divide 0.5 by 100 and you get 50%.
5.
Divide 12/16 and you get 0.75.
Multiply 0.75 by 100 and you get 75%.
<em>Hope it helps</em>
Answer:
2 + 2 equals 4.
2 + 2 + 2 + 2 equals 8.
To do 2+2+2+2, here's a trick:- you could multiply 2 with the number of 2 in the sum. Here there are 4 two's. So, you need to do 2 x 4. The answer is 8!
