Answer:
21
Step-by-step explanation:
I shall change the pictures to letters
a + a + b = 40 --(1)
b - c = 7 --(2)
c + a = 19 --(3)
a - c + b = ?
From (1):
2a + b = 40
b = 40 - 2a --(4)
From (2):
b = 7 + c --(5)
Sub (4) into (5):
40 - 2a = 7 + c
c = 33 - 2a --(6)
Sub (6) into (3):
33 - 2a + a = 19
a = 14
Sub a = 14 into (4) and (6):
b = 40 - 2(14) = 12
c = 33 - 2(14) = 5
therefore, a - c + b = 14 - 5 + 12 = 21
Topic: simultaneous equations
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Answer:
58330.5 bones
Step-by-step explanation:
Essentially mean is taking the total and dividing that by the number of items.
Here, we need to add up all the bones and divide it by the number of dogs there are:
444 + 555 + 101010 + 131313 = 233322 bones
There are 4 dogs:
233322 / 4 = 58330.5 bones
The answer is 6 feet 10 inches
