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defon
3 years ago
7

Find the y-coordinate of the vertex of the parabola whose equation is y=x^2-x+2

Mathematics
2 answers:
meriva3 years ago
8 0
To find a vertex of a parabola, use the equation -b / 2a to find the AOS. 

y = x^{2} -x + 2

\frac{-1}{2}

If the x - coordinate of the equation is -\frac{1}{2}, then plug that value of x in:

y =  \frac{1}{4} +  \frac{1}{2}  + 2

The y-coordinate is \frac{11}{4}
a_sh-v [17]3 years ago
3 0

Answer:

2 and 1/4

Step-by-step explanation:

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A fish that has been dried in the sun lasts longer than a wet fish.

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What is 8)55 with the remainder.
Lady bird [3.3K]
That would be 6.875 .
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Two math students were asked to write an exponential growth equation that had a starting value of 300 and a growth rate of 2%. P
Gemiola [76]

Answer:

Pierre is right

Step-by-step explanation:

The correct formula for Exponential growth rate is given as:

y = a( 1 + r) ^t

Where

y = Amount after time t

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t = time

From the question

a = 300

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Hence, our exponential growth rate =

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3 years ago
Use the right triangle and the given information to solve the right triangle.
Leni [432]

Answer:

a= 4.993

c = 5.824

A= 59°

C = 90°

Step-by-step explanation:

b=3, B=31°

Since it's a right angle.

C = 90°

A = 180-90-31

A= 59°

For side a and c

a/sin A = b /sin B

a = sinA * b/sin B

a= sin 59 * 3/sin31

a= 4.993

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6 0
3 years ago
Riko wants to find the distance between the points (−2, −3) and (2, −5). His work is shown. StartAbsoluteValue negative 3 EndAbs
swat32

Answer:

<em>Riko is wrong because she uses the wrong formula.</em>

Step-by-step explanation:

Given the coordinate points (-2, -3) and (2, -5)

We are to find the distance between the two points

Using the formula:

D = √(x2-x1)²+(y2-y1)²

From the coordinates x1 = -2, y1 = -3, x2 = 2 and y2 = -5

Substitute

D = √(2-(-2))²+(-5-(-3))²

D= √(4)²+(-2)²

D = √16 + 4

D = √20

D = √4*√5

D = 2√5

<em>This shows that Riko is wrong because she uses the wrong formula.</em>

7 0
3 years ago
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