3 years ago

12

Mathematics

2 answers:

zysi [14]3 years ago

4 0

Answer:

A) 700 minutes

Step-by-step explanation:

50 + 0.25x = 225

0.25x = 175

x = 700

Let me know if you have questions

just olya [345]3 years ago

3 0

Answer:

700 MINUTES

Step-by-step explanation:

Your initial fee is $50.00 so you must subtract $50.00 from $225.00 which will give you $175.00, then you will divide $175.00 by 0.25 per minute, you should end up with 700, which will be 700 minutes.

$225.00 - $50.00 = $175.00

$175.00 divided by $0.25 = 700 minutes

You might be interested in

The area of a rectangle is 216 square inches. If the perimeter is 60 inches, find the length and width of the rectangle

mojhsa [17]

A=Lw

P=2L+2w

216=Lw

W=216/L...substitute to Perimeter equation

60=2L+2(216/L)

60L=2L^2 + 432

2L^2-60L+432=0

2(L^2 - 30L + 216)=0

2(L-18)(L-12)=0

L=12, W=18 or L=18, W=12

3 0

3 years ago

Find the positive solution and please explain how ;4;

valentina_108 [34]

(x + 2)² - 10 = 0 (assuming it's equal to zero)

Expand the binomial: (x + y)² = x² + 2xy + y²
Thus, x² + 4x + 4 - 10 = 0
x² + 4x - 6 = 0

$x = \frac{-4 +_- \sqrt{16 + 24}}{2}$ (by quadratic formula)
$= \frac{-4 +_- \sqrt{40}}{2}$
$= \frac{-4 +_- 2\sqrt{10}}{2}$
$= -2 + \sqrt{10}$ , since we're taking the positive solution.