(i have to make this 20 characters long)
80% of 25 is 20
Their distance differs by 15 miles for each hour of travel time. Thus, the travel time of interest is
.. (180 -144) miles/(15 miles/hour) = 2.4 hour
The red car's speed is 180 mi/(2.4 h) = 75 mi/h.
The blue car's speed is 144 mi/(2.4 h) = 60 mi/h.
Answer:
Choice D is correct
Step-by-step explanation:
The first step is to write the polar equation of the conic section in standard form by dividing both the numerator and the denominator by 2;

The eccentricity of this conic section is thus 1, the coefficient of cos θ. Thus, this conic section is a parabola since its eccentricity is 1.
The value of the directrix is determined as;
d = k/e = 3/1 = 3
The denominator of the polar equation of this conic section contains (-cos θ) which implies that this parabola opens towards the right and thus the equation of its directrix is;
x = -3
Thus, the polar equation represents a parabola that opens towards the right with a directrix located at x = -3. Choice D fits this criteria
Answer:
D) 
Step-by-step explanation:
Given expression:

The above expression can be rewritten using grouping symbols by using properties of equality.
We apply distributive property of multiplication according to which:

the product of a number and each addend individually added together is equal to the product of that number and sum of the addends.
So, we can write

x+7=4
x=-3
x+7=-4
x=-11
A is correct
for absolute value problems, solve for x when the total is positive and negative