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3 years ago

Solve using quadratic formula. 2x^2+6x+3=0

1 answer:

4 0

$x = \frac{-b +/- \sqrt{b^{2} -4ac} }{2a}$

a = 2
b = 6
c = 3

$x = \frac{-6 +/- \sqrt{6^{2} -4*2*3} }{2*2}$

$x = 0.634$ or $x = -2.366$

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beks73 [17]

Answer:

5) The midrange is 19.5ºF

6) The midrange is 67.5º

Explanation:

The problem tell us how to calculate the midrange.

In (5) the minimum and maximum values are given (-6ºF and 45ºF, respectively). Using the formula:

$Midrange=\frac{-6+45}{2}=\frac{39}{2}=19.5ºF$

In (6), we need to find the minimum and maximum values from a list of them. We can see that the minimum is 58º and the maximum 77º

Then:

$Midrange=\frac{58+77}{2}=\frac{135}{2}=67.5º$

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1 year ago

The points plotted below are on the graph of a polynomial. Which of the following x-values best approximate roots of the polynom

Kaylis [27]

Answer:

The correct options are:

x= -1.1

x= 2.4

x = 6

Step-by-step explanation:

The roots of any polynomial can easily be determined by the graph. To find the roots from the graph, we just have to see the values of x, for which the value of whole polynomial becomes 0.

We can see in the graph that there are three points where the value of polynomial becomes 0. that are

At x= -1.1

At x= 2.4

At x = 6

Thus, these are the roots

8 0

2 years ago

I can’t do this rn does someone know what to do??

uranmaximum [27]

Answer:

see image

Step-by-step explanation:

See image. It all on the paper in the picture. Hope this helps! Please mark Brainliest if possible! tysm!

4 0

1 year ago

F(x)=7-3x <br><br><br>slope and intercept

solong [7]

Answer:

3 is the slope and 7 is the y intercept

Step-by-step explanation:

3 represents the slope and 7 represents the y intercept

3 0

3 years ago

the current temperature in small town - 20 degrees Fahrenheit this is 6 degrees less than twice the temperature that was six hou

Vlad [161]

For problems like this we can use algebra to help us, the farenheight 6 hours ago was:
(2xt)-6=-20
We have to balance the sides out, first we minus 6
2xt=-26
Now we can divide by 2
t=-13

We now know the temperature 6 hours ago was -13

6 0

2 years ago