3 years ago

The given amount converted to units?

Mathematics

1 answer:

Alisiya [41]3 years ago

4 0

120 seconds is 2 * 60s
60s is 1 minute, so 2*60s = 2 minutes

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Determine the zeros of the function 5) y=-x² + 2x + 1

Rus_ich [418]

<h3>Zeros of function are $x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}$ </h3>

Solution:

We have to find the zeros of the function

$y = -x^2 + 2x+1$

Find the zeros of function:

$-x^2 + 2x+1 = 0\\\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$\mathrm{For\:}\quad a=-1,\:b=2,\:c=1\\\\x =\frac{-2\pm \sqrt{2^2-4\left(-1\right)1}}{2\left(-1\right)}$

$Simplify\\\\x=\frac{-2 \pm \sqrt{4+4}}{-2}\\\\x =\frac{-2 \pm \sqrt{8}}{-2}\\\\Simplify\\\\x =\frac{-2 \pm 2 \sqrt{2}}{-2}\\\\x = 1 \pm \sqrt{2}$

We have two zeros

$x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}$

Thus zeros of function are $x = 1 + \sqrt{2} \text{ and } x = 1 - \sqrt{2}$

3 0

3 years ago

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If (-3, y) lies on the graph of y = 3^x, then y = 1/27 -1 -27

posledela

1/27

Cuz y=3^(-3)=1/(3^3)=1/27

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Vicky starts a new job with an hourly pay of $7.15. Suppose that her hourly pay increases by 5% each year. What will Vicky’s hou

Inessa [10]

Answer:

$8.22.

Step-by-step explanation:

since we know that Vicky's pay increases each year by 5% and we know how many years, we can just times that 5% by three and make it 15% From there, you just add 7.15 to .15 and you get your answer!

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prohojiy [21]

Answer: 31mph

Step-by-step explanation:

ok that is 186.411 miles in 6 hours or 31.0685mph

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3 years ago

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1) f(x)= x3 expand vertically by a factor of 2