Answer:
Part a)
Part b)
Step-by-step explanation:
Let
x ----> the number of miles driven
y ----> the total cost
we know that
<em>First Plan</em>
----> equation A
<em>Second Plan</em>
----> equation B
Part a) For what amount of driving do the two plans cost the same?
Equate equation A and equation B and solve for x
Part b) What is the cost when the two plans cost the same?
For x=350 miles
substitute in equation A or equation B (the cost will be the same)
Answer:
x = -5/2 , 5/2
Step-by-step explanation:
x^ -2 = 4/25
negative exponents means flip from numerator to denominator ( or vice versa)
(1/x) ^2 = 4/25
take the square root of each side (remember you get a positive and negative result)
sqrt(1/x) = sqrt(4/25)
1/x = + 2/5 1/x = -2/5
multiply each side by x
1 = + 2/5 x 1 = -2/5 x
multiply by 5/2 multiply by -5/2
5/2 = + 2/5 x * 5/2 -5/2 = -2/5 x *- 5/2
5/2 = + x -5/2 = x
x = 5/2 , -5/2
Answer:
D
Step-by-step explanation:
3 and 7 are the main factors so you add them and get 10 but since it’s two equilateral trapezoids then you get another 10 being 20 square feet.
All of the trigonometric functions of an angle θ can be constructed geometrically in terms of a unit circle centered at O. Given that:
Sine function
being
Cosine function
being
We will demonstrate the identity above. First of all, we need to square each equation, so:
Adding these two equations:
But as shown in the figure, using Pythagorean theorem
is always equal to 1, then:
The relation to right triangles is that:
<span>The hypotenuse is always equal to 1
</span>The opposite side is equal to
The adjacent side is equal to
3a - 6=5a +4
then you would subtract 3a on both sides to get
-6=2a+4
then you would subtract 4 on both sides to get
-10=2a
divide 2 into -10 and get
a= -5