Answer:
Step-by-step explanation:
Here, to compute the expected value you only need to multiply each payout value by the correspondently probability and add all the results. More exactly,
Expected value= 1*0.35+2*0.2+5*0.1+8*0.2+10*0.15=4.35
<h3>
Answer: C) 4</h3>
============================
Work Shown:
Expand out the left hand side
(x-k)(x-5)
x(x-5)-k(x-5)
x^2-5x-kx+5k
Note that the constant term here is 5k. Yes k seems like a variable, but it's actually a constant. Once we know k, we can replace it to get a fixed number. In this case, k = 4 since 5k = 5*4 = 20 to have it match with the 20 at the end of x^2-9x+20
For the x terms, we have -5x-kx = -5x-4x = -9x which matches with the middle term of x^2-9x+20
Therefore,
(x-k)(x-5) = x^2-9x+20
updates to
(x-4)(x-5) = x^2-9x+20
The -4 and -5 multiply to 20, and they also add to -9. This helps confirm we have the right k value.
<h3>
Answer: 1.3 seconds</h3>
Explanation:
Replace h with 0. Solve for t.
It takes about 1.3 seconds for the balloon to hit the ground.
Use the formula:
Y-yo=m(x-xo)
Answer:
The answer is 148 degrees
Step-by-step explanation:
I'm pretty sure it is 148°... In my notes it says "if a tangent to a circle & a chord intersect at a point on the circle, then the measure of each angle they form is one-half the measure of its intercepted arc." Hope this helps...
Read more on Brainly.com - brainly.com/question/3819019#readmore