2 years ago

Answer this:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Mathematics

1 answer:

blagie [28]2 years ago

6 0

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Fran graphs the equations y = 2x2 – 2 and y = –0.5x + 4. Her graph is shown below. mc010-1.jpg Which value is an approximate sol

miv72 [106K]

On the added picture you can see that graphs of functions $y=2x^2-2$ and $y=-0.5x+4$ have two points of intersection. The x-coordinates of these points are the solutions of the equation
$2x^2-2=-0.5x+4$ .
Hence, the approximate solutions are x=-1.9 and x=1.6.

3 0

2 years ago

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Find a122 of the sequence 5, 8, 11

ruslelena [56]

5, 8, 11, ... is an arithmetic sequence where:

$a_1=5;\ a_2=8;\ d=8-5=3\\\\a_n=a_1+(n-1)d\to a_n=5+(n-1)\cdot3=5+3n-3=2+3n\\\\therefore\\\\a_{122}=2+3\cdot122=2+366=368$

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2 years ago

The value -2 is a lower bound for the zeros of the function shown below.

Juliette [100K]

Answer:

a) true

Step-by-step explanation:

The bottom-line numbers from synthetic division <em>alternate signs</em>, indicating that -2 is a lower bound. The given statement is true.

If the signs were all positive, it would indicate the proposed zero is an <em>upper bound</em>.

A graph shows all real zeros are greater than -2.