Kent has a board which is 3-3/4 inches long. Darren has a board which is 2/3 as long. how long is Darren's board

2-1/2 inches long

Step-by-step explanation:

Convert 3-3/4 to an improper fraction by multiplying the whole number by the denominator and adding it to the numerator. Then multiply by 2/3.

15/4 × 2/3

Cross-multiply and divide (simplify)

30/12

5/2

2-1/2

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

x/3-10=8

x/3=18

x=48