9 days because 45 divided by 15 is 3 so 45 divided by 5 is 9
6/5 +15.4
12/10 +15.4
12/10+154/10
166/10
16.6
This can also be done by using the following method:
6/5 +15.4
12/10+15.4
1.2+15.4
16.6
Hope this helps :)
Answer:
the weight of 24 bricks is :

Step-by-step explanation:

It is clear that there is a proportional relationship between the number of bricks and their weights then :


9514 1404 393
Answer:
obtuse
Step-by-step explanation:
The law of cosines tells you ...
b² = a² +c² -2ac·cos(B)
Substituting for a²+c² using the given equation, we have ...
b² = b²·cos(B)² -2ac·cos(B)
We can subtract b² to get a quadratic in standard form for cos(B).
b²·cos(B)² -2ac·cos(B) -b² = 0
Solving this using the quadratic formula gives ...

The fraction ac/b² is always positive, so the term on the right (the square root) is always greater than 1. The value of cos(B) cannot be greater than 1, so the only viable value for cos(B) is ...

The value of the radical is necessarily greater than ac/b², so cos(B) is necessarily negative. When cos(B) < 0, B > 90°. The triangle is obtuse.
Answer:
21.6
Step-by-step explanation:
i did the math