Atunnel is 300 feet deep and makes an angle of 30 with the ground . a.300√3 feetb.300 feetc.600 feet d.100√3 feet

Step-by-step explanation:

The tunnel, the ground and the depth of the tunnel form a right angle triangle.

The length of the tunnel is the hypotenuse of the right triangle that has been formed.

Let the length of the tunnel be .

Using the sine ratio, we obtain;

The length of the opposite side is

We substitute the given values to obtain;

We cross multiply to obtain;

Therefore the correct answer is C.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

its 4 because 2 times 2 is 4, if you double the number two you get four