What are the x-intercepts of the function f(x) = –2x^2 – 3x + 20?

Mathematics

1 answer:

Jet001 [13]3 years ago

5 0

Answer:

(5/2,0) and(-4,0)

Step-by-step explanation:

I hope this helps.

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Solving multi step equations -12 = 3 - 2k - 3k

34kurt

-12 = 3 - 2k - 3k

-12 = 3 - 5k

-15 = -5k

15 = 5k

k = 3

6 0

3 years ago

Jeremy is driving to his friends house that is 60 miles away from his home the scale on Jeremy's map is 1 1/2 inches equivalent

defon

Answer:

The distance between their house on the map is 10 inches.

Step-by-step explanation:

In order to calculate the distance from Jeremy's friend house to his we can apply a rule of three in a way that 60 miles is related to "x" inches in the same proportion as "1 1/2" inches is related to 9 miles. Before applying that it'll be for the best if we convert the mixed fraction to a pure fraction as shown below:

$d = 1\frac{1}{2} = 1 + \frac{1}{2} = \frac{2}{2} + \frac{1}{2} = \frac{3}{2}$

Creating the rule of three:

$\frac{60}{9} \frac{\text{miles}}{\text{miles}} = \frac{x}{\frac{3}{2}} \frac{\text{inches}}{\text{inches}}\\\\9*x = \frac{60*3}{2}\\\\x = \frac{180}{18}\\\\x = 10 \text{ inches}$