Answer:
9a-7
Step-by-step explanation:
8a-6+a-1
Collect like terms
8a+a-6-1
= 9a-7
Answer:
0.74 to 6.06
Step-by-step explanation:
The groups are independnet,
SE(xh bar-xa bar)=sqrt [sh^2/nh+sa^2/na]=sqrt [10.1^2/80+10.3^2/80]=1.61
At df=157, the t critical is 1.65
90%c.i=(xh bar-xa bar)+-tcritical SE(xh bar-xa bar)
=(25.2-21.8)+-1.65*1.61
=0.74 to 6.06
Answer:
2/3 + 3/5 = 19
15
= 14
15
≅ 1.266667
Step-by-step explanation:
Add: 2
3
+ 3
5
= 2 · 5
3 · 5
+ 3 · 3
5 · 3
= 10
15
+ 9
15
= 10 + 9
15
= 19
15
B and D when you multiply them there 11.16 but we want 1.116
