Answer:
Step-by-step explanation:
Since a,b,c and d are integers,
bd, ad and cb are also integers because product of two integers is an integer
Also, ad + cb is an integer because sum of two integers is an integer.
(ad + cb)/bd is a rational number
a/b + c/d is a rational number
Answer:
Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group
Step-by-step explanation:
hope this helps you :)
Answer:
1 1/4 kg
Step-by-step explanation:
Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?
The kg of fudge thay maggie and her friends ate is calculated as:
Initial kg of fudge - kg of fudge left
= 3 kg - 1 3/4 kg
3/1 kg - 7/4 kg
Lowest common denominator = 4
= 12 - 7/4 kg
= 5/4 kg
= 1 1/4 kg
Answer:
it's C
Step-by-step explanation:
Imagine a coordinate plane. Move 5 units away, you'll end up with (-5, 2).
Hope I helped
Is the last one
(-Infinity, -3] U (-1, positive infinity)
