The topics you should learn are equating denominators and fractions. This is summing up simple fractions.
So we have to make denominators' numbers the same in order to sum up them all (we can sum fractions if the denominators are the same) , and we did it by cross product (that thing on the picture)
Equating by lcm (least common multiple) is the easiest way, because you might see bigger numbers on other questions, and cross product will bring much bigger numbers, so this technic might confuse you.
By the way lcm of 4 and 5 is already 20
Hope it helps!
Answer:
The dimensions of the prism are 1, 2/3, and 5/3.
Multiplying all of these numbers, we see that the final volume of the prism is 10/9 units, which is also equal to 1 1/9, so the first choice (the one to the left) is correct.
Let me know if this helps!
Answer:
H >= 6.25
6.5 hours per week
Step-by-step explanation:
75-50=25
JT must complete 25 more hours of exercise in 4 weeks. 25/4=6.25. So JT has to exercise 6.5 hours each week.
>= (means greater than or equal to)
<span>about 100.70 million.</span>
Answer:a) 3 amp
b) 3 volts
Step-by-step explanation:
As the relationship is given by
V= I*R
a)
I=240/80=3amp
b)
V= 0.6*5 = 3 volts
