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Sphinxa [80]
3 years ago
15

Which of these equations shows rust, Fe2O3, forming when oxygen, O2, reacts with iron, Fe? Question 10 options: 2Fe2O3 → 3O2 + 4

Fe 4Fe → 3O2 + 2Fe2O3 3O2 + 4Fe → 2Fe2O3 2Fe2O3 + 4Fe → 3O2
Mathematics
1 answer:
mrs_skeptik [129]3 years ago
6 0

Answer:

The rusting of iron is represented by the equation 4Fe +3O2 --> 2Fe2O3.

Step-by-step explanation:

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Jayden earned some money doing odd jobs last summer and put it in a savings account that earns 12% interest compounded monthly.
aivan3 [116]

Answer:

$220.18

Step-by-step explanation:

The amount A(n) accrued for P dollars saved at r% annual interest for a period of n years compounded k times is derived using the formula:

A(n)=P \left(1+\dfrac{r}{k}\right)^{nk}

In Jayden's case:

  • A(n)=$400
  • r=12%=0.12
  • n=5 years
  • k=12 Months

We want to determine the amount Jayden put in the savings account.

400=P \left(1+\dfrac{0.12}{12}\right)^{12*5}\\400=P \left(1+0.01}\right)^{60}\\400=P \left(1.01}\right)^{60}\\P=\dfrac{400}{\left(1.01}\right)^{60}}\\

P=\$220.18

Jayden earned $220.18 from doing odd jobs.

8 0
3 years ago
4/8 x 6 answer first gets 10000 points
natulia [17]

Answer:

3

Step-by-step explanation: now weres the 10000 points you scammer

3 0
3 years ago
Read 2 more answers
Given h(x) = 5x + 2, solve for a when h(x) = -8.
Whitepunk [10]

Answer:

i think its -38

Step-by-step explanation:

3 0
3 years ago
Why is 2 × 3/4 less than 2​
Stella [2.4K]

Answer:

becuase 2*3 is 6, and 2*4 is 8, and when you simplfy it is 1 and 1/2, which in decimal form is 1.5, making it less than 2

5 0
3 years ago
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Compute 33(0.5) - 6(0.5) - 7/2.
lora16 [44]
Hi there! The answer is 10.

33(0.5) - 6(0.5) -  \frac{7}{2}
We can use PEMDAS (Parenthesis, exponents, multiply, divide, add, subtract) to find our answer.

Since we cannot work inside the parenthesis in this question and since we don't have exponents, we can move on to multiplying.
16.5 - 3 -  \frac{7}{2}

Our next step would be subtracting. To make the process of subtracting some easier, I'll first change the fraction into a decimal.
16.5 - 3 - 3.5

Finally subtract.
13.5 - 3.5 = 10

The answer is 10.
~ Hope this helps you!
5 0
3 years ago
Read 2 more answers
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