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3 years ago

(4+2n^3) + (5n^3+2)

Mathematics

2 answers:

pychu [463]3 years ago

8 0

You just have to combine like terms here
6+7n^3 is the final answer

adell [148]3 years ago

4 0

Combine like terms to get 7n³+6

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When calcium metal (Ca) reacts with oxygen gas (O2), it produces the ionic compound calcium oxide (CaO). Write the balanced equa

Vanyuwa [196]

Step-by-step explanation:

Hey there! Down here :D

$\bf{Ca + O_2 \longrightarrow CaO}$

Now , let's balance it by Multiplying 2 on Calcium Side.

$\sf{2Ca + O_2 \longrightarrow 2CaO}$

Is the Required Equation.

Hope it helps :)

<h3>Redox Reaction: Is it?</h3>

Yes, this is because:-

$\sf{2Ca + O_2 \longrightarrow 2CaO}$

Here, Calcium acts as Reducing Agent
And Oxygen is oxidizing agent.
And also, Cao gets oxidized.

It is also a Combination reaction.

$\sf{A + B \longrightarrow AB}$

Here A is Calcium
Here B is Oxygen.

6 0

4 years ago

You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2

defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

$P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715$

Probability a unit is defective and from manufacturer A:

2% of 43%. So

$P(A \cap B) = 0.02*0.43 = 0.0086$

What is the probability that it came from manufacturer A?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015$

0.5015 = 50.15% probability that it came from manufacturer A.

4 0

3 years ago

How do you express 1 and 1/20 as a decimal?

HACTEHA [7]

1 1/20 as a decimal would be 1.05<span />

4 0

4 years ago

Read 2 more answers

Which answer would it be

ziro4ka [17]

Answer:

Step-by-step explanation:

usually anything with 11 on the numerator is a repeating decimal and the 0.37 is closest to 36.

so by guessing you know is D

5 0

3 years ago

Read 2 more answers

The shaded portion of the bar model in Part A shows 38. What percent is equivalent to 38? Enter the correct answer in the box.

nordsb [41]

Question:

The shaded portion of the bar model in Part A shows 3/8. What percent is equivalent to 3/8? Enter the correct answer in the box.

Answer:

The equivalent is 37.5%

Step-by-step explanation:

Given

$\frac{3}{8}$

Required

The equivalent

<em>The model is not shown, but the question can still be solved.</em>

We have:

$\frac{3}{8}$

Multiply by 100%

$\frac{3}{8} = \frac{3}{8} * 100\%$

$\frac{3}{8} = 0.375 * 100\%$

$\frac{3}{8} = 37.5\%$

8 0

3 years ago