Answer:
1. option B is correct i.e., 
2. option D is correct i.e., 
.
3. option B is correct i.e., 
.
Step-by-step explanation:
1. Since the given equation is:
As we know that 
So, the given equation can be represented as:
2. Given equation is:
As we know that
so the given equation can be represented as:
.
3. Given equation is:
by using the properties ,
and 
= 
= 
= 
= 
= .
which is option B.
The answer is 4. Since 12+ 12 = 24, I added 4 + 4, which made 42.
So the length of the width of the rectangle is 4.
Hope this helps!
Answer:
3
Step-by-step explanation:
from the question,you get an expresion of
6n-5= n + 10
5n = 15
Isolate n
5n/5 = 15/5
n+3
Step-by-step explanation:
And he wants to know how many backpacks he has. Simple!
2*3*5=25 backpacks
:)
Answer:
D
Step-by-step explanation:
For some side lengths to create a triangle, any two of the side lengths must have an added length together of less than the third leg. Otherwise, the vertices would simply not be able to be connected by the lines. In a), 3+5=8, but since it is not more, the triangle will not be able to be formed (it would basically just be a line.) In B, 7+8< 16. In C, there is the same situation as with the first example (4+15=19). Finally, in the last one, 5+7>12, and all of the side lengths work out. Therefore, the correct answer is D. Hope this helps!
