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kogti [31]
3 years ago
7

11:

Mathematics
1 answer:
patriot [66]3 years ago
3 0

Answer:

Part A is 5 i think and part b is c

Step-by-step explanation:

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Find the vertex of the graph of f(x) = x2 + 4x - 5.
Fofino [41]
You can solve this in two ways.

1. Graphical. Plot the graph for x between -5 and 1 (see attachement).
The vertex of the graph is the peak of the curve, which has the coordinates x=-2, y=-9.

2. Analytical. Calculate the derivative of the function f(x)
\frac{df}{dx}=2x+4
Solve the equation:
2x+4=0
will give the solution x=-2.
Replace x=-2 in the f(x) function and you'll get the value of y:
(-2)^2+4 \cdot (-2)-5=4-8-5=-9

You get the same answer: x=-2, y=-9

So the answer is
<span>B. (-2, -9)</span>

7 0
3 years ago
The sum of two and four and six times eight?
MissTica

Answer:

2+4 6(8)

Step-by-step explanation:

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3 years ago
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Find the slope of the line through each pair of points (-20,-4) and (-12,-10)
Vilka [71]

Answer: -3/4x -19

Use formula y2 - y1

                      x2 - x1

6 0
3 years ago
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Find the length of AC.
saw5 [17]

Answer:

4.3

Step-by-step explanation:

6.8^2-5.3^2=x^2

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3 0
3 years ago
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Tj worked for 5 hours and 45 minutes how should he write that on his time card
matrenka [14]

Answer:

Tj should write 5.75 hours on her time card.

Step-by-step explanation:

We have been given, Tj worked for 5 hours and 45 minutes.

We will convert 45 minutes to hours by dividing 45 by 60 as one hour has 60 minutes.

\frac{45 minutes }{60} \times\frac{hour}{minutes}

=0.75 hours

Hence, Tj should write 5.75 hours on her time card.

4 0
3 years ago
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