PLEASE HELP

If x = 3x + , then what does -x equal?

-3x

Step-by-step explanation:

-3x

Step-by-step explanation:

This just goes down to very little rules. X's (even though not seen) always has an invisible number behind it (1). X is by itself, so is one of itself. We dont put the number there as it is just extra work, but it is there. When you have -X, you have minus one of that X, so you have -1x. The question is kinda weird stated, but I believe it is -3x. If you were to plug in -1x as x (x=-1x) then the answer would be -3x^2. So up to how the question is stated.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.