Answer:
64 cm^2
Step-by-step explanation:
SA = s^2 + 2sl
= 4^2 + 2(4)(6)
= 64 cm^2
First is -1 and 4, second should be no solution and the third is 2 and 6
Answer:
x = 5.5
Step-by-step explanation:
Given 2 secants intersecting the circle from a point outside the circle then
The product of the external part and the entire part of one secant is equal to the product of the external part and the entire part of the other secant, that is
x(x + 14) = 6(6 + 12)
x² + 14x = 6 × 18 = 108 ( subtract 108 from both sides )
x² + 14x - 108 = 0 ← in standard form
with a = 1, b = 14 and c = - 108
Using the quadratic formula to solve for x
x = ( - b ±
) / 2a
= ( - 14 ±
) / 2
= ( - 14 ±
) / 2
= ( - 14 ±
) / 2
x =
or x = ![\frac{-14+\sqrt{628} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-14%2B%5Csqrt%7B628%7D%20%7D%7B2%7D)
x = - 19.5 or x = 5.5 ( to 1 dec. place )
However x > 0 ⇒ x = 5.5
U should get the app "photomath" it will help out alot!!!
The rate at which tea is poured in the cafeteria is,
4 cups / minute
There are 120 minutes in 2 hours. Thus, the number of cups poured is,
(4 cups / minute) x (120 minute) = 480 cups
Each gallon is made up of 16 cups. Thus, 480 cups is also equal to 30.