Answer:
79 sociology textbooks and 138 biology textbooks
Step-by-step explanation:
Create a system of equations, where b is the number of biology books and s is the number of sociology books:
b + s = 217
b = s + 59
Solve by substitution by substituting s + 59 for b into the first equation:
b + s = 217
s + 59 + s = 217
Add like terms and solve for s:
2s = 158
s = 79
So, there were 79 sociology books. To find the number of biology books, substitute 79 in for s into the equation b = s + 59
b = s + 59
b = 79 + 59
b = 138
So, 79 sociology textbooks and 138 biology textbooks were sold.
Answer:
50 inches
Step-by-step explanation:
48^2 + 14^2 = h^2
Answer is 50 inches if you solve...
Answer:
3/12
Step-by-step explanation:
first you find the l. c. m of the denominators.you will find the l. c. m as 36.you will then multiply 36 by both fractions
Answer:
B. 1 / 4
Step-by-step explanation:
Step 1: We can turn 2 yards into 6 feet.
Step 2: Then we can turn 6 feet into 72 inches.
Step 3: We plug it into the ratio, getting 18 / 72.
Step 4: Simplify. We get 1 / 4 as the answer. Therefore, we choose B.