Answer:
- 4 nickels
- 60 mph
Step-by-step explanation:
1. If all were dimes, the value would be $8.00. The value is actually $0.20 less than that. Replacing a dime by a nickel decreases the value by $0.05, so there must be $0.20/$0.05 = 4 nickels.
2. The total of the two speeds is the rate of closure: (420 mi)/(4 h) = 105 mi/h. The speed of the second car is found by subtracting the speed of the first car from this total:
105 mph - 45 mph = 60 mph
i may not know how the triangle looks like but i assume that its a right angle triangle.
if we want to find the missing length example hypotenuese.. 3 is adjacent and 6 is opposite. Then use the formula:
c²= a²+b²
c²= 3²+6²
c²= 45
c= √45
c= 7 (nearest tenth)
hope this helps
17 + 3y = 7x
3y = 7x - 17
y = 7/3x - 17/3
= 7/3
Answer:
3) 0.75
5)96 pens
Step-by-step explanation:
3) 5 percent *15 =
( 5:100)*15 =
( 5*15):100 =
75:100 = 0.75
5) 48/4= 12
12*8=96
Answer: 5
Step-by-step explanation:
The median is the middle number in the set.
{1, 2, 5, 6, 9} - there are five numbers.
The middle number is the 3rd one.
{1, 2, 5, 6, 9}
The median is 5.
