4(3x + 3) = 3x + 12 -
1 answer:
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Answer:
JL = 12.5
Step-by-step explanation:
Therefore, by geometric mean property:
JL = JM +ML
JL = 8 + 4.5
JL = 12.5
10) Enlarging by a factor of 7 corresponds to an increase by a factor of 
for the area, or 49. The new rectangle has area 980 square-inches.
To verify, let's say the dimensions of the original rectangle are
. We increase each dimension by a factor of 7 to get 
. This new area is 980 square-inches.
11) We use the same concept. Increasing by a factor of 0.6 corresponds to increasing the area by
(n.b., an increase by a factor less than 1 is shrinking). Original area is 
. New area is 
.
12) We multiply 15 by 11/30 to get 5.5 ft. We multiply 8.25 by the same factor to get 3.025 ft. The area is
.
To verify, let's say the dimensions of the original rectangle are
11) We use the same concept. Increasing by a factor of 0.6 corresponds to increasing the area by
12) We multiply 15 by 11/30 to get 5.5 ft. We multiply 8.25 by the same factor to get 3.025 ft. The area is
Check the picture below.
let's firstly convert the mixed fractions to improper fractions and then subtract.
