9) Shoe Box (L = 36 cm W= 20 cm H= 16 cm) A. 11 520 cu cm
B. 11 320 cu cm
C. 11 220 cu cm
D. 11 120 cu cm
10) Printer ink tank (L = 15 cm W = 8 cm H = 10cm
A. 1 200 cu cm
B. 1 400 cu cm
C. 1 800 cu cm
D. 2 100 cu cm​

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

here is your mark brainliest

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,