Answer:
Its the first choice.
Step-by-step explanation:
an = the nth term. so:
a1 = 6(1) + 1 = 7
a2 = 6(2) + 1 = 13
a3 = 6(3) + 1 = 19
The common difference is 6.
Answer:
38 degrees
Step-by-step explanation:
this is an isosceles triangle, meaning that the base angles are congruent.
the total triangle is equal to 180
so the equation would be: x=180 - (71+71)
evaluate:
x=180-142
x=38 degrees
Hope this helps :)
<h3>hello!</h3>
Use the Distributive Property, which states the following:-
a(b+c)
ab+ac
Simplify:-
3(y+4)-7
3y+12-7
Combine Like terms:-
![\sf{3y+5}](https://tex.z-dn.net/?f=%5Csf%7B3y%2B5%7D)
<h3>note:-</h3>
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)
Answer:
n = - 10
Step-by-step explanation:
10(-3n + 8) = 380
-30n + 80 = 380
80 - 380 = 30n
30n = - 300
n = - 300 : 30
n = - 10
90 for the box and 45 for the next angle