All categories

2 years ago

Use factoring to solve the following quadratic: 6x2 + 23x - 18 = 0

Mathematics

1 answer:

katen-ka-za [31]2 years ago

4 0

6x² + 23x - 18 = 0
(3x - 2)(2x + 9) = 0

You might be interested in

PLEASEEEEE I NEED HELP!!!!!

Murljashka [212]

Im pretty sure the answer is d

7 0

2 years ago

A factory makes car batteries. The probability that a battery is defective is 1/14. If 400 batteries are tested, about how many

Rufina [12.5K]

Answer:

28.6, that is, about 29 are expected to be defective

Step-by-step explanation:

For each battery, there are only two possible outcomes. Either it is defective, or it is not. The probability of a battery being defective is independent of other betteries. So the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$

The probability that a battery is defective is 1/14.

This means that $p = \frac{1}{14}$

400 batteries.

This means that $n = 400$

How many are expected to be defective?

$E(X) = np = 400*\frac{1}{14} = 28.6$

28.6, that is, about 29 are expected to be defective

3 0

3 years ago

Find all real and complex roots of the equation below x^4-81=0

Pepsi [2]

$x^4-81=0 \\ (x^2-9)(x^2+9)=0\\ (x-3)(x+3)(x^2+9)=0\\ x=3 \vee x=-3 \vee x=3i \vee x=-3i$

8 0

2 years ago

3⋅f(−4)−3⋅g(−2)????????

andrey2020 [161]

The answer to that is: -12f+6g
Hope this helps ;-)

4 0

2 years ago

Read 2 more answers

My question is 4% of what is 56?

Scrat [10]

4% is the same as 0.04 

so 0.04 x n = 56 where "n" is some number 

0.04n = 56 Divide both sides by 0.04 

n = 1400

4 0

2 years ago