Answer: a
Step-by-step explanation: 19x+ 2x=21x. Then 20+15 is 35. So it would be 21x+35
Answer:
75 degrees
Step-by-step explanation:
2x+ 4x+6x +30= 180
12x+30=180
12x=150
x=150÷12
x=12.5
6x= 12.5×6
6x= 75
Whales head : 1/3(100) = 100/3 = 33.33 ft or 1/3(30) = 30/3 = 10 meters
new baby whale : 1/4(100) = 100/4 = 25 ft. or 1/4(30) = 30/4 = 7.5 meters
average man height : 1/17(100) = 100/17 = 5.88 ft or 1/17(30) = 30/17 = 1.76 m
average man weight : 1/1818(300000) = 300000/1818 = 165 lbs or 1/1818(136000) = 136000/1818 = 74.81 kilograms
human baby height : 1/4(5.88) = 5.88/4 = 1.47 ft or 1/4(1.76) = 0.44 meters
Length = l
width = 1/3 of length = l/3
perimeter = 2(l + l/3)
Answer is option B
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2(l+ l/3) = 56
⇒ 8l/3 = 56
⇒ l = 3*56/8
⇒ l = 21 inch
width = 21/3 = 7inch
Area = 21*7 inch² = 147 inch²
