In the sequence 20, 14, 8, … which term has a value of –70

the 16th term!!!

Step-by-step explanation:

if the first # is 20 and the common difference is -6 the 16th term would be -70

Step-by-step explanation:

The term 16 has the value of -70

because when

Un=-70 , a=20, d=-6, n=??

Un= a+(n-1)d

-70=20+(n-1)-6

-70=20-6n+6

6n=20+6+70

6n=96,  divide both sides by 6

∴ the 16 term has the value of -70

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:

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5