40 !
a government agency conducted energy research on two different towns. the agency selected 12 homes from each town and recorded the number of kilowatt-hours used by the homes over a one-year period. the following statistical information was calculated from their findings.
jacobia cantorville
mean 11,178 11,613
median 11,653 11,572
mode 11,705 11,050
range 2,137 2,188
based on these samples, what generalization can be made?
cantorville used more kilowatt-hours than jacobia.
not enough information is provided to draw any of these conclusions.
both towns used the same number of kilowatt-hours.
jacobia used more kilowatt-hours than cantorville

Cantorville used more kilowatt-hours than Jacobia

Step-by-step explanation:

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

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.