Ciphering quiz 9/9

• 119

• 24

• 1

• 0

(GCMT 2016) Convert the hexadecimal number 2016₁₆ into base-10

• 8214

• 1234

• 4096

• 2016

(GCMT 2016) Let k and m be real numbers. The lines y = kx + 1 and y = mx + 11 intersect at the point (5, 7). Compute the area of the region enclosed by the two lines and the y-axis.

• 25

• 35

• 15

• 45

Tags

CCSS.8.EE.C.8B

(GCMT 2017) If log_ax = 25, what is log_x(a/x)?

• -24/25

• 24/25

• 25/24

• -25/24

(GCMT 2017) Find the sum of the roots of the polynomial 36x⁵ - 781x³ - 692x² + 497x - 60

• 0

• 1

• -1

• 60

(GCMT 2017) Compute the shaded area:
(sqrt = square root of)

(GCMT 2018) Al's test scores in his math class were x + 17, x + 4, x + 3, and x - 4, where x is the class average of the four tests. If Al's median score on the four tests is 83.5, what is Al's mean score on the four tests?

• 85

• 80

• 90

• 75

Tags

CCSS.6.SP.B.5C

(GCMT 2019) Compute 98765 × 43210

• 4267635650

• 4267635600

• 4267635700

• 4267635500

Tags

CCSS.5.NBT.B.5

(GCMT 2019) Two numbers have their sum and their product both equal to 8. What is their positive difference?

(2005 AMC 10A #8) In the figure, the length of side AB of square ABCD is sqrt(50) and BE=1. What is the area of the inner square EFGH?

• 10

• 5

• 8

• 12

Tags

CCSS.HSG.CO.C.11