Answer:
Yes.
Step-by-step explanation:
Reduce each one to lowest terms:
25/45 = 5/9 (dividing top and bottom by 5).
15/27 = 5/9 (dividing top and bottom by 3)
Answer:
a. 0.25
b. 0.50
c. 0.75
Step-by-step explanation:
P(E1) = 0.25
P(E2) = 0.25
P(Es) = 0.25
P(E) = 0.25
a. Since there are 4 outcomes with the same probability of occurring, the probability of E occurring is:

b. The probability of any two outcomes occurring is twice the probability of a single outcome occurring

c. The probability of any three outcomes occurring can be written as 100% minus the probability of the remaining outcome occurring

Answer:
6 seconds
Step-by-step explanation:
<u><em>The question in English is</em></u>
An object is thrown from a platform.
Its height (in meters), x seconds after launch, is modeled by:
h(x)=-5x^2+20x+60
How many seconds after the launch does the object reach the ground?
Let
x ----> the time in seconds
h(x) ---> the height of the object
we have

we know that
When the object hit the ground the height is equal to zero
so
For h(x)=0
we have

The formula to solve a quadratic equation of the form
is equal to
in this problem we have

so
substitute in the formula
The solution is x=6 sec
The he object reach the ground at x=6 seconds
Answer:

Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its corresponding sides is proportional
Let
x----> the height of cone B
using proportion

Answer:
5
Step-by-step explanation:
because ?*9=45
45÷9=5