Answer:
127 1/2 feet
Step-by-step explanation:
A model lighthouse uses a scale of 1/4 inch = 5 feet.
This means that 1/4 inch on the model represents 5 feet in actual life.
The height of the model lighthouse is 6 3/8 inches i.e. 51/8 inches.
The height of the actual lighthouse is:
1/4 inch = 5 feet
51/8 inches = x
Cross-multiply:
51/8 * 5 = 1/4 * x
=> x = 51/8 * 4 * 5
x = 127 1/2 feet
The height of the actual lighthouse is 127 1/2 feet.
Answer:
24
Step-by-step explanation:
the area of white board = (2×12) ×4 = 96 sq in.
the area of post-it = 2×2 = 4 sq in
so, numbers of post-it = 96/4 = 24
#59)
Joe: 5a + 4b = 6 (1st)
Dawn: 3a + 6b = 6.3 (2nd)
Multiply 1st equation by 3 and 2nd equation by (-5) to eliminate a
15a + 12b = 18
-15a - 30b = -31.5
------------------------------Add
-18b = - 13.5
b = 0.75
substitute b = 0.75 into 5a + 4b = 6
5a + 4(0.75) = 6
5a + 3 = 6
5a = 3
a = 0.6
Answer: Apple cost 60 cents each and banana cost 75 cents each
#60)
Wesley and Brian have total 87 baseball cards.
W + B = 87
Wesley has 30 less than twice as many as Brian
W = 2B - 30 (2nd)
So
W + B = 87
2B - 30 + B = 87
3B = 117
B = 39
W + 39 = 87
W = 48
Answer: Wesley has 48 cards and Brian has 39 cards
Hope they help.
