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Lelechka [254]
4 years ago
9

Which measure of center best represents each set of data? goals scored during hockey season: 7, 6, 9, 3, 12, 7, 2, 10, 7, 8

Mathematics
1 answer:
klemol [59]4 years ago
5 0
Mode. As the pronumerals are around the same, finding the average would be the most accurate option.
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Which equation has a graph that is a parabola with a vertex at (–1, –1)?
zzz [600]

y = {(x + 1)}^{2} - 1

The one is a vertical translation of the parent function to the left of one

f(x) = {x}^{2}

making it -1.

4 0
4 years ago
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A parabola is given by the equation y = x^2 + 4x + 4.
insens350 [35]
Y = x² + 4x + 4.. Since the coefficient of x² =1, is positive, then this parabola opens upward & has a minimum.


Its axis of symmetry is = -b/a = -4/1 = 4 (so x=4)

1) When x=4, y= 4²+4(4)+4 => y=36 so the VERTEX has a minimum is at (4,36) 

2)FOCUS.: To be able to calculate the focus, rewrite the equation in a standard form: y-k =a(x-h)² & y = x² + 4x + 4 could be written y=(x+2)², this means that k=0 & h=-2.
Now p being the distance between the VERTEX & the FOCUS, we apply the formula (x-2)² = 4P (y-k) , but k=0 & h=2 then (x-2)² = 4P(y-0) then P =1/4

3) DRECTRICE : y=k-P = 0-1/4 ==> y=-1/4 is the directrix
6 0
3 years ago
Rosa says her baby sister is one yard tall. How tall is Rosa's sister is inches?
zheka24 [161]

Answer:

36 inches

Step-by-step explanation:

plz mark brainliest

7 0
3 years ago
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A year membership to Fun Zone costs $45 plus $1 per visit. A one-month membership costs $5 plus $3 per visit. Which multi-step e
Margaret [11]

Answer:

y = $45 + x

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Step-by-step explanation:

The computation of the multi-step equations be shown below:

Let us assume the number of visits be x

So the first equation would be

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And, the second equation would be

y = $5 + 3x

These are the multi-step equations with variable on the both sides

6 0
3 years ago
if there is 2/3 of a bag of jelly beans, and Danny ate 1/4 of the bag last night, what fraction of the bag is left?
scoundrel [369]
2/3-1/4=5/12
You could make the denominators common by finding the GCF

The GCF of 4 and 3 is 12

This means that 8/12-3/12 which would give you 5/12.

:)
8 0
4 years ago
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