A trapezoid has an altitude of 12 cm. Its parallel sides measure 10 and 8 cm, respectively. What is its area?
2 answers:
You might be interested in
Given that Kimora’s cell phone company charges her $35 a month for phone service plus $.05 for each text message sent.
Kimora's cell phone bill for one month is $52.
We need to determine the number of text messages Kimora sent for one month.
Also, we need to write and equation and solve it.
<u>The equation:</u>
Let x denote the number of text messages Kimora sent for one month.
Thus, the equation is given by
Therefore, the equation for the number of text messages Kimora sent for one month is
<u>Solving the equation:</u>
We need to solve the equation
Subtracting both sides of the equation by 35, we get;
Dividing both sides of the equation by 0.05, we get;
Therefore, the number of messages sent is 340.
Answer:
x = 1.434 and x=0.232
Step-by-step explanation:
To find the root of the equation stated above we need to:
(1) Write the polynomial equation with zero on the right hand side:
⇒
(2) Divide the whole equation by 3
⇒
(3) Use the quadratic formula to solve the quadratic equation:
The quadratic formula states that the two solutions for a quadratic equation is given by:
(1)
In this case, a = 1, b =
Substituiting a, b and c in equation (1) We get:
(1)
The two solutions are:
x = 1.434 and x=0.232