Answer:
A is area
B is base
H is height
Step-by-step explanation:
Answer:
the answer would be 4 students
Step-by-step explanation:
X + y = 4
x - y = -6
--------------add
2x = -2
x = -2/2
x = -1
x + y = 4
-1 + y = 4
y = 4 + 1
y = 5
solution is : (-1,5)
Answer: 7 and a 1/2
Step-by-step explanation: 1 and 1/4 times4 = 5 plus 2 and a 1/2 = 7 and a 1/2
Answer:
Number of nickels = 17
Number of dimes = 23
Step-by-step explanation:
Let
x = number of nickels
y = number of dimes
x + y = 40 (1)
0.05x + 0.10y = 3.15 (2)
From (1)
x = 40 - y
Substitute x = 40 - y into (2)
0.05x + 0.10y = 3.15 (2)
0.05(40 - y) + 0.10y = 3.15
2 - 0.05y + 0.10y = 3.15
- 0.05y + 0.10y = 3.15 - 2
0.05y = 1.15
y = 1.15/0.05
y = 23
Substitute y = 23 into (1)
x + y = 40 (1)
x + 23 = 40
x = 40 - 23
x = 17
Number of nickels = 17
Number of dimes = 23
