Answer:
-45
Step-by-step explanation:
8 - 8 / 2 + 7^2
PEMDAS Parenthesis Exponents Multiplication Division Addition Subtraction
Exponents 7^2 = 49
8 - 8 / 2 + 49
Division 8 / 2 = 4
8 - 4 + 49
Addition 4 + 49 = 53
8 - 53
Subtraction 8 - 53 = -45
-45
The answer is B) , an out break of cholera or other diseases are most likely to occur
Answer:
The number 1 is not necessary when expressing powers of one. For example, you needn't write "5" as 
.
Step-by-step explanation:
Answer:
-8
Step-by-step explanation:
remove parentheses and change the sign
-15+7
=-8
A = 2
b = 2
c = -4
"a" is greater than zero so the vertex is a minimum point and the graph is concave up.
The (x,y) point of the vertex is usually designated by the letters (h, k)
The "x" position (or "h") is calculated with this formula:
h = -b / 2a
h = -2 / 4
h = -1 / 2
"k" is calculated with this equation:
k = ah^2 + bh +c
k =(2*-1 / 2 * -1 / 2) + (2 * -1 / 2) + -4
k = (1 / 2) - 1 -4
k = -4.5
so the vertex is at point (-.5, -4.5)
Source:
http://www.1728.org/quadr3.htm
