Range is 39 and standard deviation is 11.5
Answer:
B
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - 5 and (a, b) = (2, - 7), thus
y - (- 7) = - 5(x - 2) , that is
y + 7 = - 5(x - 2) → B
In both cases, we have cooling. We can add together the 2 functions describing this cooling: z(x) = 0.5x - 9 - [-x-2] = 0.5x - 9 + x + 2, or
z(x) = 1.5x - 7
Provided that this is correct, all we have to do now is to subst. 5 for x:
z(5) = 1.5(5) - 7 = 7.5 - 7 = 0.5 (answer)
Answer:
Step-by-step explanation:
Previous Iron content per serving=1.2 mg
Current Iron content per serving=1.8 mg
Increase in Iron content per serving=1.8-1.2=0.6 mg
Percentage of Iron Increase
Like terms are terms that contain the same variables raised to the same power. Only the numerical coefficients are different. ... We combine like terms to shorten and simplify algebraic expressions, so we can work with them more easily. To combine like terms, we add the coefficients and keep the variables the same
