Let a = 6.

2 answers:

7 0

That would be B. 16 because if a is 6 and is by 2, that means it is multiplication. And multiplication always comes before addition. So. 2 times 6 would be 12, plus for would be 16.

PIT_PIT [208]4 years ago

3 0

There are two ways you can do this. The first is to plug in the answers and check to see if they are true or false, the other way is to multiply 2 by 6 and then add 4. the answer is B 16, the reason is 2*6 is 12 + 4 is 16. However using the other method is not the best way to do it for the other way. This is because 48 and 30 are multiples of 6

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A hot-air balloon is floating above a straight road. To estimate their height above the ground, the balloonists simultaneously m

lukranit [14]

Answer:3.677 miles

Step-by-step explanation:

First we have to know that the distance between two consecutive milestone is 1mile, I have attached a diagram representing the problem, point C being the point of the balloon and point A and point B being the points of the consecutive milestones

I labelled the horizontal length between the balloon and the first milestone x and the height of the balloon h

From the diagram, we use the tan rule for right angle triangles to find x and h

Tan22=h/x

Making her the subject of formula

h=xtan22 (1)

Similarly

Tan20=h/(x+1)

h=(x+1)tan20 (2)

Putting (1) and (2) together

We solve for x, and then input our value for in (1) to get the value for h, the solution is in the second picture I sent

Note: tan rule says the tan of an angle is equal to the opposite side of the triangle(side directly facing the angle) divided by the adjacent side of the triangle( side of the triangle the angle is resting on)

Angle of depression from C to B is also angle of elevation from B to C( alternate angle are equal)