The first three books in the series have 117, 135, and 117 pages. the author finishes the series with a fourth book that has 151 pages. which is not true?
a. the range is smaller than the mean.
b. the mean is smaller than the median.
c. the mean is larger than the mode.
d. the median is larger than the mode.

B. The mean is smaller than the median.

Step-by-step explanation:

Mean:  117 + 135 + 117 + 151 = 520

520/4 = 130

Median: Arrange the numbers from least to greatest, and take the average of the middle two. In this case, the middle two are 117 and 135:

117 + 135 = 252

252/2 = 126

126 is not greater than 130, so the answer is B.

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

y + 11 = (1/4)(x + 16)

step-by-step explanation: