Here is some information about the goals scored in some hockey games. Each game has four quarters
a) Which quarter was the
Goals in hockey games
de for av

b) There were 10 games
Work out the mean number
of goals per game.

Number

of goals 5

c) In total, how many more
4th
home goals were scored
than away goals?

1st
2nd
3rd
Quarter
Key:
Home goals Away goals

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step-by-step explanation:

i wish i could u

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15