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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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Step-by-step explanation:

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James works as a waiter. He served meals with bills of $23.59, $40.65, $30.50, and $15.68. If his total for tips was $17.67, wha
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Answer:

16%

Step-by-step explanation:

To find the percent, add the total for each meal to find the total dollars spent.

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3 years ago
Which system is equivalent y=-2x^2 y=x-2
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The wording of your question suggests that there were answer choices.  Mind sharing them?

The system   <span>y=-2x^2 y=x-2 would be best written as:

</span><span>y=-2x^2 
y=x-2                  If you subst. x-2 for y in the first equation, you'll get:
                           x-2 = -2x^2,   or 2x^2 + x - 2 = 0.
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1. What is the slope of a line that passses through (-1,-5) and (6, 8)?
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Answer:

Step One: Identify two points on the line.

Step Two: Select one to be (x1, y1) and the other to be (x2, y2).

Step Three: Use the slope equation to calculate slope.

4 0
3 years ago
A triangle has side lengths of 11 cm and 7 cm. Which could be the value of the third side, 19 cm or 17 cm ?
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Answer:

By the triangle side length theorem, the sum of the two shorter sides has to be equal to or larger than the third side. Thus, we can write the following inequation.

a

+

b

≥

c

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11, 9 and 15 satisfies this inequality while 11, 9 and 20 doesn't.

Justification:

The reason for this rule is simple; it's because if the longest side is longer than the sum of the two shorter sides, this means that the shorter sides aren't long enough to connect with the longest side, thus rendering the shape a collection of lines and disqualifying the possibility of having a triangle, which was our objective.

Practice exercises:

Which of the following triangles is possible?

a) 4,6 and 14

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Hopefully this helps:

Step-by-step explanation:

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