All categories

3 years ago

Please answer asap

Mathematics

1 answer:

kondaur [170]3 years ago

6 0

Step-by-step explanation:

A trinomial is an expression that has three terms.

Square trinomial

A square trinomial is simply a perfect square trinomial, and it is represented as:

\mathbf{a^2 + 2ab + b^2 = (a + b)^2}a2+2ab+b2=(a+b)2

Difference of square binomials

This is easily identified because, the terms of the square binomials are perfect squares.

The difference of square binomials is represented as:

\mathbf{a^2 - b^2 = (a + b)(a - b)}a2−b2=(a+b)(a−b)

Sums and difference of cubes

When cubes are added or subtracted, they can be expressed using the following

\mathbf{a^3 + b^3 = (a + b)(a^2 - ab + b^2)}a3+b3=(a+b)(a2−ab+b2) --- sum of cubes

\mathbf{a^3 - b^3 = (a - b)(a^2 + ab + b^2)}a3−b3=(a−b)(a2+ab+b2) --- difference of cubes

Read more about binomial and trinomial at:

brainly.com/question/12289266

You might be interested in

Mon wants to make 5 lbs of the sugar syrup. How much water and how much sugar does he need to make 50% syrup?

fredd [130]

Answer:

<h2>Mon needs 2.5 pounds of sugar and 2.5 of syrup.</h2>

Step-by-step explanation:

To make 50% syrup, having 5 pounds of sugar syrup, it would be

$\frac{x}{5}=0.5=2.5 lb$

Mon would need 2.5 pounds of sugar.

Now, Mon has 2.5 pounds of sugar, how much water does she need to make 50% syrup?

$\frac{2.5}{x+2.5}=0.5\\ 2.5=0.5(x+2.5)\\2.5=0.5x+1.25\\2.5-1.25=0.5x\\x=\frac{1.25}{0.5}=2.5$

This means that Mon needs 2.5 pounds of water too.

As you can see, the easiest way to find the answer would be to divide the initial 5 pounds in to equal parts, which are 2.5, because they syrup have to 50%.

Therefore, Mon needs 2.5 pounds of sugar and 2.5 of syrup.

4 0

3 years ago

Read 2 more answers

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800. A researcher from the a

Doss [256]

Using the z-distribution, it is found that she should take a sample of 46 students.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:

$6\sigma = 800 - 200$