40 inches long you mult LE
So... let's say, we have two numbers "a" and "b",
"a" is the smaller one, "b" is the larger one
so, their sum is 6
a + b = 6
3 times the smaller => 3 * a or 3a
now, two less than that
3a - 2
that equals the larger "b"
3a - 2 = b
solve for "a",
now, what's "b"? well, 3a - 2 = b :)
What are you talking about?
Answer:
A is the answers for the question and
Step-by-step explanation:
please mark me as brainlest
We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is
![P(\text{k successed on n trials}) = \binom{n}{k}p^k(1-p)^{n-k}](https://tex.z-dn.net/?f=%20P%28%5Ctext%7Bk%20successed%20on%20n%20trials%7D%29%20%3D%20%5Cbinom%7Bn%7D%7Bk%7Dp%5Ek%281-p%29%5E%7Bn-k%7D%20)
Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.
We can compute their probability and sum them:![\binom{5}{3}\left(\frac{3}{7}\right)^3\left(\frac{4}{7}\right)^2 + \binom{5}{4}\left(\frac{3}{7}\right)^4\left(\frac{4}{7}\right)^1 + \binom{5}{5}\left(\frac{3}{7}\right)^5 \approx 0.36788](https://tex.z-dn.net/?f=%20%5Cbinom%7B5%7D%7B3%7D%5Cleft%28%5Cfrac%7B3%7D%7B7%7D%5Cright%29%5E3%5Cleft%28%5Cfrac%7B4%7D%7B7%7D%5Cright%29%5E2%20%2B%20%5Cbinom%7B5%7D%7B4%7D%5Cleft%28%5Cfrac%7B3%7D%7B7%7D%5Cright%29%5E4%5Cleft%28%5Cfrac%7B4%7D%7B7%7D%5Cright%29%5E1%20%2B%20%5Cbinom%7B5%7D%7B5%7D%5Cleft%28%5Cfrac%7B3%7D%7B7%7D%5Cright%29%5E5%20%5Capprox%200.36788%20)
So, the answer is about 36.79%