If a space heater draws 10 amps from a 120-volt household circuit, and electricity costs 100 per
kilowatt-hour, how much has it cost to run the space heater for 3 hours? Note that a watt-hour is
equal to 1 watt of power used for one hour.
A. $0.12
B. $0.36
C. $1.20
D. $3.60
E. $4.28

so what is the question

step-by-step explanation:

i dont know sorry

step-by-step explanation:

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.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: