City A experienced 18 armed robberies less than twice that of city B. In two cities combined, 138 armed robberies occurred. How many armed robberies occurred in City A?

86 armed robberies

Step-by-step explanation:

Let a represent the number of armed robberies city A experienced and b represent the number of armed robberies city B experienced.

From the first sentence, we know that  a = 2b-18

From the second sentence, we know that a+b=138.

We can solve by substituting the value of a into the second equation to get

(2b-18)+b = 138. Add 18 to both sides and simplify to get 3b = 156. Finally, divide both sides by 3 to get b=52. We can plug this back into the first equation to get a = 2*52 - 18 = 104-18 = 86.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: