Katrina is building a deck. She cuts 3 lengths of wood from a 72-inch board. The first length is 30 3.4 inches. The second lengt h is 12 1.4 inches. And the third length is 16 1.4 inches. How much of the original board remains after Katrina makes her cuts?
1 answer:
Common denominators! <span>If you have to add... 3 fractions with 4 as the denominators: </span> <span>Then you can combine the numerators: </span> <span>a/c+ b/c = (a+b)/c and a/d + b/d + c/d = (a+b+c)/d </span> <span>Let's plug in the numbers.</span> <span>a=3, b=1, c=1, d =4 </span> <span>3/4 + 1/4 + 1/4 = 5/4 or 1 1/4! </span> <span>So the equation for the problem: </span> <span>Lt = L1+ L2 + L3 + L4 or </span> <span>L4 = Lt - L1 - L2 - L3 Plug in the numbers </span> <span>L4 ( remains ) = L total, 72 - L1 ( first cut at 30 3/4 ) - L2 ( second cut 12 1/4 ) - L3 ( 16 1/4 ) </span> <span>So 72 - 30 - 12 - 16 - 3/4 - 1/4 - 1/4 =? </span> <span>( break this down into simple terms and do it in your head... </span> <span>72 - 30 = 42, 42 - 21 = 30, 30 - 16 = 14, 14 - 3/4 = 13 1/4 - 1//4 = 13 - 1/4 = 12 3/4!</span>
You might be interested in
Im thinking c, im sorry if wrong
33 c = 91.4 Fahrenheit 62 c =143.6 f -25 c= -13 f 89c= 192.2 f 212c = 413.6 f
Answer:
20
Step-by-step explanation:
9.60 × 15= 144 9.60×5=48 15+5=20
To get the answer you have to add 29.4 and 13.9 and you get 43.3 It is A
To get the answer we can use proportion 220 ----------------95.3% x -------------------100% Crossmultiply now 220*100%=95.3%*x 22000=95.3x /:95.3 22000:95.3=x 231=x - its the answer