Answer:
b = 12
Step-by-step explanation:
Complementary angles add to 90 degrees
a+b = 90
78+b = 90
Subtract 78 from each side
78-78+b = 90-78
b = 12
The correct answer is 50%.
Approximately the middle 50% of data is contained inside the box of a box plot.
5c plus 9c is 14c bc 5 plus 9 is 14 and the exponent is c so 14c
Answer:
(x + 7)(x + 3).
Step-by-step explanation:
x^2 +10x + 21
21 = 7 * 3 and 10 = 7 +3
so the factors are
(x + 7)(x + 3).