If lines ab and cd are parallel, which of the following statements are true? Check all that apply.

A. Ab and cd are skew lines
B. Ab and cd are perpendicular
C. Ab and cd intersect at a single point
D. Ab ll cd
E. Ab is perpendicular to cd
F. Ab and cd are coplanar

Answer:

find 40 percent of the original price and subtract it from the the original price to find the new price.

The first question's answer is:

0<-100x^2+350x-150

The second question "Look at the factorization shown below.

0 < –100x2 + 350x – 150

0 < –50(2x2 – 7x + 3)

0 < –50(2x – 1)(x – 3)

Select the range that Mario can choose from to price his muffins and make a positive profit.

The answer is:

$0.50 < x < $3.00

Answer:

Step-by-step explanation:

We can make 2 simultaneous equations and solve for the set fee

and the per minute charge:

Let x = fixed monthly rate

Let m = per minute charge

x + 100m = 135    {equation 1}

x + 500m = 375    {equation 2}

subtract equation 1 from equation 2

400m = 240

m = 0.6

substitute that back into equation 1 or 2 to solve for x.

Using equation 1

x + 100(.6) = 135

x + 60 = 135

x = 75

The fixed monthly rate is $75

The per minute charge is $0.6

*****************************

If y is the total cost for a month and x is the

number of minutes used the equation is:

y = 0.6x + 75

Answer:

Therefore, the solution for x in terms of X and y is:

x = (X + 8y) / y

Step-by-step explanation:

To solve for x in the equation X/y = x - 8, we need to isolate x on one side of the equation.

Step 1: Multiply both sides of the equation by y to eliminate the denominator on the left side:

X/y * y = (x - 8) * y

Simplifying, we have:

X = xy - 8y

Step 2: Add 8y to both sides of the equation to isolate the term with x:

X + 8y = xy

Step 3: Rearrange the terms to have x on one side:

xy = X + 8y

Step 4: Divide both sides of the equation by y to solve for x:

x = (X + 8y) / y