Can anyone help serious answers only please

Mathematics

1 answer:

ivann1987 [24]4 years ago

7 0

The expression isn't fully visible is it
$x - \frac{2}{y} + {x}^{2}$ ?

You might be interested in

You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the exper

mrs_skeptik [129]

Each question has four choices, then the probability to guess a correct answer is $p= \frac{1}{4}$ and the probability to select incorrect choice is $q=1-p=1- \frac{1}{4} = \frac{3}{4}$ .

You have a 5-question multiple-choice test, then n=5. The probability that you will guess exactly three out of five questions correctly is 

 $C_n^kp^nq^{n-k}=C_5^3p^3q^{5-3}= \dfrac{5!}{3!\cdot 2!} \left( \dfrac{1}{4} \right)^3\left( \dfrac{3}{4} \right)^2=\dfrac{1\cdot 2\cdot 3\cdot 4\cdot 5}{1\cdot 2\cdot 3\cdot 1\cdot 2} \cdot \dfrac{9}{1024} =$ 
$= \dfrac{90}{1024} = \dfrac{45}{512}$ .

6 0

3 years ago

Read 2 more answers

When can you write ratios as a fraction?

k0ka [10]

Answer:

In a mathequation when needed

Step-by-step explanation:

4 0

3 years ago

The function f(x) is a cubic function and the zeros of f(x) are -6, -3 and 1. The

jarptica [38.1K]