Answer:
85
Step-by-step explanation:
68 x 5 = 340
80 x 3 = 240
340+240=580
750-580= 170
170 ÷ 2 ====== 85
Answer:
14 feet is how long he should make the cable.
Step-by-step explanation:
52 - 39 = 14
Translate the info given into equations:
<span>A positive integer is 15 less than another -----> x = y - 15
</span><span>If 4 times the reciprocal of the smaller integer is subtracted from the reciprocal of the larger integer, then the result is − 3/4
</span>------> (1/y) - (4/x) = -3/4
Use substitution, replace 'x' with 'y-15' in 2nd equation
We know that both x and y must be positive integers, so y =-1 is not a solution.
If y=20, then x = 20-15 = 5
Final answer:
The pair of integers is (5,20)
Answer:
Property of Addition
Step-by-step explanation:
Answer:
12p - 13q + 20rs
Step-by-step explanation:
Subtract 8p + 9q -5rs from – 4p - 4 q +15 sr
– 4p - 4q + 15sr - (8p + 9q -5rs)
= -4p - 4q + 15sr - 8p - 9q + 5rs
= -4p - 8p - 4q - 9q + 15rs + 5rs
= -12p - 13q + 20rs
– 4p - 4q + 15sr - (8p + 9q -5rs) = 12p - 13q + 20rs