Answer:

Step-by-step explanation:
hello,
first of all we will study the quadratic expressions
we can write that, (the different answers provide good clues :-) )

and

so first of all as we cannot divide by 0 we need to take x different from 7, -12 and -30 and then we can write

hope this helps
Answer:
12.56 square cm
Step-by-step explanation:
Let A be the area of the sector of circle.

So the total for dogs (bottom left box) is 47
17 of them had a cat so the top left box is 17
47-17=30 so 30 have a dog but no cat (left column, middle row)
24 cat but no dog (middle column, top row)
9 no cat no dog (very middle box)
Total no dog= 24 + 9 = 33
Total cat (top right) = 17 + 24 = 41
Total no cat (right column, middle row) = 9 + 30 = 39
Hope this make sense :)
Answer:
t = 59°
Step-by-step explanation:
t and 59° are vertically opposite angles and are congruent , so
t = 59°
Answer:
22x - 35
Step-by-step explanation:
Expand 2(x+10)
2x+20
Expand 5(4x-11)
20x-55
Simplify:
22x-35