Answer:
4 students needed
Step-by-step explanation:
We can divide 5/6 and then round it to the nearest tenth which is 0.8.
This means every 0.8 hours 1 student is completed with their work.
We can then divide 3 hours with the 0.8 hours to get 3.75 students additionally needed to cut the time to 3 hours.
Obviously, we can't have 3/4's of a student so we convert that into 1 student, ending up with 4 students additionally needed to complete the work in 3 hours.
Mathematical work:
5 students/6 hours
= 0.8 hours
0.8 hour/3 hours
=3.75 students
Round 3.75 to 4
4 students additionally needed.
Hope this helped.
Answer:
commutative property of multiplication
Step-by-step explanation:
Been a while since I've done this, but I think I remember what to do here:
The main technique is called "rise over run." The first number, the rise, is how far up the next dot on the right should be. The other number, the run, is how many spaces right the dot should be at. 1+(-2)=-1 and 8+3=11. The next dot on the right should be placed at (11,-1). If you're looking on the left, replace the addition with subtraction. 1-(-2)=3 and 8-3=5. The dot on the left should be (5,3). This means that the three dots on the slope are, in order, (5,3), (1,8), and (11,-1). To find the numbers after the third dot and before the first dot, simply repeat their respective equations.
I hope my memory was correct. Lol
First, you try to make sure that both the denominators are the same. In order to do this, you multiply both fractions' numerator and denominator by the other fraction's denominator. Next, you combine like terms in the numerator, and then you simplify the fraction.
Answer:
1,044cm
Step-by-step explanation:
46-21=25cm (the length of the top line)
30-14=16cm (the length of the other line on the left of the 21)
Split it into three rectangles, 25×16, 21×14 and 25×14
25×16 = 400cm
21×14 = 294cm
25×14 = 350cm
Add to together: 400+350+294= 1044cm