Write the sum using summation notation, assuming the suggested pattern continues. -4 + 5 + 14 + 23 + ... + 131

summation of the quantity negative four plus nine n from n equals zero to fifteen
summation of negative thirty six times n from n equals zero to fifteen
summation of the quantity negative four plus nine n from n equals zero to infinity
summation of negative thirty six times n from n equals zero to infinity

omg what happend to your question? if you could edit this question i can

step-by-step explanation:

50-38=12

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.