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 =
x = - 19.5 or x = 5.5 ( to 1 dec. place )
However x > 0 ⇒ x = 5.5
Answer: $4
Step-by-step explanation:
In this situation let's set up a proportional relationship .
Now solve by cross multiply
0.5x = 2 Divide both sides by 0.5
x = 4
This means that if Emily bikes 10 miles, her mother will donate $4.
Answer:
50%
Step-by-step explanation:
3 red + 2 yellow = 5 + 5 blue = 10
5 blue out of 10 pieces is 50%
there must be a typo either in the question or answers
to find the volume of a cylinder ⇒
therefore
the volume should be ≈4247.43 which is not one of the provided answers
87.05x1.6=139.28
I used a calculator