What happens when a catalyst is added to a chemical reaction that is already in progress?

For the sake of rhetorical effect, the writer wants to maintain the pattern of repeating words derived from the same root. Which

Nastasia [14]

Answer: I Might tell you what to do

Explanation:

5 0

3 years ago

Can I get held back in ninth grade with two Fs and two Cs?? IMMEDIATE ANSWERS NEEDED!! (chose random subject to post this)

Lubov Fominskaja [6]

No but you will have to retake the classes you failed

8 0

3 years ago

In the xy-plane, if (0,0) is a solution to the inequalities above, which of the following relationships between a+b must be true

natali 33 [55]

$a$ must be greater than zero
$b$ must be less than zero

<h2>Explanation:</h2>

The complete question is written in a comment above. The system of inequalities is the following:

$\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}yx+b\end{array}\right.$

So, in order to find $a \ and \b$ you just need to replace both x and y-coordinates into our system. Therefore:

$\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}00+b\end{array}\right. \\ \\ \\ Solving: \\ \\ \begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}0b\end{array}\right. \\ \\ \\ Finally: \\ \\ \begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}a>0\\b$

So the conclusion is:

$a$ must be greater than zero
$b$ must be less than zero

<h2>Learn more:</h2>

Inequalities: brainly.com/question/12890742

#LearnWithBrainly

8 0

4 years ago

Which pair shows equivalent expressions? mc019-1. Jpg mc019-2. Jpg mc019-3. Jpg mc019-4. Jpg.

Lubov Fominskaja [6]

A mathematical pair that is <u>equivalent</u> to the given expression $(4+6i)^2$ is -20 + 48i.

<u>Given the following expression:</u>

$(4+6i)^2$

To determine a mathematical pair that is equivalent to the given expression:

In this exercise, you're required to solve for a mathematical expression that is equivalent to the given expression. Thus, we would simplify the expression by applying the perfect-square trinomial.

<h3>The perfect square trinomial.</h3>

Mathematically, the perfect-square trinomial is given by this expression:

$(a+b)^2=a^2+2ab +b^2$

Comparing the expressions, we have:

a = 4

b = 6i

Substituting the values, we have:

$(4+6i)^2=4^2+2(4)(6i) +(6i)^2\\\\(4+6i)^2=16+48i +36i^2$

<u>Note:</u> $i^2$ = -1

Simplifying further, we have:

$(4+6i)^2=16+48i +36(-1)\\\\(4+6i)^2=16+48i -36\\\\(4+6i)^2=-20+48i$

Read more on mathematical pairs here: brainly.com/question/13170908

5 0

2 years ago

A company makes two versions of a particular software product, a standard version and a deluxe version. Out of 25,000 units ship

alekssr [168]

First, we need to find the probability, P, that the software is the standard version.

Out of 25,000 units, 5,000 were deluxe. That means the remaining 20,000 were standard. So, 20,000 out of 25,000, or $\frac{20000}{25000}$ were standard. That means the probability of selecting a standard one at random is P = 0.8.

Next, we need to find the independent probability that any software box will contain the promotion. We know that 1 in 500 will, or $\frac{1}{500}$ . That means P = 0.002.

To find the compound probability of these two events, we multiply the probabilities together to get $P=(0.8)(0.002)=0.0016$ .

5 0

4 years ago