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tia_tia [17]
3 years ago
10

PLEASE HELP! I'M BEING TIMED :(( PLZ HELP!! Which point is an x-intercept of the quadratic function f(x) = (x – 8)(x + 9)? (0,8)

(0,–8) (9,0) (–9,0)
Mathematics
1 answer:
Anon25 [30]3 years ago
8 0
(-9,0) Is one of the x-intercepts
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A parallelogram has a base length of 9.3 inches and an area of 56.73 squared inches. Find the height of the parallelogram.
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The population of a city in 2005 was 18,000. By 2010, the city's population had grown to 32,800. If the population growth follow
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The projected population for 2015 is around 83,600 people.

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3 years ago
The difference between two numbers is 15. If 8 is added to twice the greater number, the result is 4 less than 3 times the lesse
yuradex [85]

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Step-by-step explanation:

Let x be the greater number and y be the smaller number. We know that their difference is 15, so we have

x-y=15

Then, we have the following information: if we add twice the greater (2x) and 8 (2x+8), the result is 3 times the lesser (3y) minus four (3y-4). So, we have

2x+8 = 3y-4 \iff 2x-3y = -12

So, we have the follwing system:

\begin{cases} x-y=15\\2x-3y = -12\end{cases}

From the first equation, we can derive x = y+15, and substitute this expression in the second equation to get

2(y+15)-3y = -12 \iff 2y + 30 -3y = -12 \iff -y = -42 \iff y = 42

Substitute this value for y in the first equation to get

x-42=15 \iff x=15+42 \iff x = 57

8 0
3 years ago
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