Answer:
n
Step-by-step explanation:
Answer:
40 km
Step-by-step explanation:
You have 2 variables: km and minutes/hour
30 minutes turned into 60 minutes(1 hour) by multiplying by 2...
So you need to do the same for km!
20km * 2 = 40km per hour
Answer: 48 square units
Step-by-step explanation:
8 * 12 = 96
The square is 96 square units.
6 * 8 = 48/2 = 24
24 is the shaded region of 1 of the triangles.
24 * 2 = 48.
The total shaded region is 48 square units.
Answer:
n = 3 2/7
Step-by-step explanation:
First of all, look at what you have.
It is a linear equation in n, with several layers of operations performed on it.
You can solve this a couple of ways. (1) Simplify the equation to a 2-step linear equation; (2) Undo the operations done on the variable.
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(1) -5 +18 +21n = 82 . . . eliminate parentheses
21n = 69 . . . . . . . . . . subtract 13
n = 69/21 = 23/7 . . . . divide by the coefficient of n and reduce the fraction
n = 3 2/7
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(2) 3(6 +7n) = 87 . . . . . . add 5
6 +7n = 29 . . . . . . . . . divide by 3
7n = 23 . . . . . . . . . . . . . subtract 6
n = 23/7 . . . . . . . . . . . . divide by the coefficient of n
n = 3 2/7 . . . . write as a mixed number
True since each inch is 4 miles you time 6 by 4
false it says it is 12 miles so you divide that by 4 to get the inches
false if A to B is 24 and B to C is 12 miles there is clearly much more then 4 miles between A and C
